Ford f150 p0171 code - 2004 - 2008 Ford F150 - P0308, P0174 Codes - I have a 2008 4.6L STX 4x4 model F150 (140k miles) that is idling with a little more vibration than normal at around 750 rpm, vibration increases as I gave it more gas and accelerate, also there is some hesitation during acceleration. ... 2004 - 2008 Ford F150 General discussion on the 2004 - 2008 ...

 
1997 - 2003 Ford F150 - 2003 f150 4.6 p0171 - Hey Guys, I know there are a million posts on this, but I think I'm having a somewhat unique situation. I have a P0171 code, and no P0174.. Gwen shamblin before and after

Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. Looking for recent topics? F150 Codes P0171 / P0174 Information. 58 posts 1; 2; 3; Next; 3FOX Hardcore Ford Truck Fanatic Posts: 3868 Joined: Mon Oct 22, 2012 2:53 am Truck: 02 F150 SCREW. F150 Codes P0171 / P0174 Information.2003 Ford F150 4.2 Ltr code P0171 and P0174 come upon diagnostic. It says fuel trim system lean on bank 1 and 2 - Ford F-150 question2004 - 2008 Ford F150 - '05 4.2L Woes - P0171 P0302 - Tonight on the drive home, the truck started bucking pretty bad and threw a CEL. Checking with my very basic scanner gave me P0171 (Lean Condition Bank 1) and P0302 (Cylinder #2 Misfire). I've had some sort of exhaust leak for the past few weeks (can smell exhaust...Maintenance Shop - P0171 and P0174 wont go away. - 2005 f150 5.4 with 130,000 miles. I have p0171 a d p0174 lean codes. I have tried everything I can think of and nothing fixes it. We have tested the injectors ran 44k thru the system, tested o2 sensors, replaced to maf 3 times now, smoke checked for vaccum leak,...You are here: Ford F150 Home » F150 Forum. Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... code P0171. 6 posts • Page 1 of 1. txford09 Regular Member Posts: 92 Joined: Sun Mar 09, 2008 2:42 pm Location: Nederland, TX. code P0171.On the back of the intake, you cannot see it very well so feel for softness or other signs of an issue. I just thought you should know what your working with. Good luck. 1997 - 2003 F150 - 03' F150 SES Light: code P0171 - The service engine soon light on my 2003 F150 Supercrew 4.6L (225k miles) just came on.I just saw the intake and assumed that was the truck in question. 2009 - 2014 F150 - F150 5.0 P0171 P0174 - For the last few months my truck has been throwing an intermittent check engine light due to the same code every time - P0171. The dealer has allegedly checked everything and has given me the We have done all we can do speech.Jan 9, 2024 · 1. Use an OBD-II scanner to retrieve the trouble code. This will help identify the specific issue. 2. Code P0131 indicates a malfunction in the oxygen sensor bank 1 sensor 1. Inspect the wiring harness and connector for any damage or loose connections. 1997 - 2003 Ford F150 - p0171,p0174 lean codes. help me!!!!! - I keep getting a service engine light. P0171,p0174 lean codes. I have replaced or serviced or inspected the following: intake and head gaskets, vacuum lines, fuel system, maf sensor, air and fuel filters, o2 and fuel pressure sensors. Oh, and I have been...Re: 2002 ford F-150 Code P0171. by Chris's FX4 » Wed Nov 13, 2013 10:52 pm. Try cleaning the MAF first and check the PCV valve itself. Follow the PCV line from the valve on the passenger side valve cover to the back of the intake. There's an elbow back behind the intake up under the firewall, its hard to see unless you're practically sitting ...P0171 code engine knocking and rough. 2004 4.6l f150. Running rough at idle and not much better when driving. Knocking like a diesel which I am afraid is the dreaded cam phaser or cam roller. It is throwing code P0171 lean condition on bank 1. Changed all the plugs on driver side. Checked all coils and fuel injectors on driver side. Replaced Egr.1997 F150 P0171 P0174 Cylinder Bank Lean CodesLink to my Amazon Affiliate Shop: https://www.amazon.com/shop/aaronroseApr 13, 2013 · 2003 F150 engine code P0171. My 'service engine soon' light just came on today. Took my truck to Auto Zone and they told my that my fuel trim bank 1 is running too lean. Told me that I either needed (1) oxygen sensor, (2) spark plugs, or (3) fuel injectors. Just wanted to get any input from this site to see which thing I should try first. The 1940s Classic Ford Cars Channel covers popular antique Fords from the decade. Take a look under the hood of 1940s classic Ford cars. Advertisement The 1940s Classic Ford Cars C...P0171. by projectsho89 » Sun Mar 06, 2011 3:12 pm. davemx wrote: no your injectors should be fine it might be your o2 sensors. O2 sensors will NOT cause "lean" or "rich" codes! Check for vacuum leaks, dirty MAF sensors, restricted/weak fuel supplies, exhaust leaks adjacent to the upstream O2 sensors, etc.Oct 22, 2020 ... Comments42 ; P0171 Trouble Code: System Too Lean Bank 1 Diagnosis. Big Dog50001 Automotive · 2.5M views ; Check Engine Light? System Too Lean - ...Oct 1, 2010 · 1997 - 2003 F150 - P0175 and P0171 codes - I am getting codes P0171 and P0175 on a 2002 F-150 4.2. I have cleaned the MAF and filter, replaced the elbows on the PCV assy and checked for vacuum leaks but couldnt find anything. The truck runs a little rough at idle but doesnt seem to lack any power. It is also hard to... P0171 and P0174. Hey guys my dad has a 96 F150 XL with a 300 6cyl. has lean codes PO171 (lean bank one) and P0174 (lean bank two). When cold, it cranks just fine and runs just fine but when its be ran for a while it hard as hell to start...it staggers and knocks real hard. Dad has to press the gas pedal to get it to straighten up after a few ...90. 13K views 2 years ago. In this video, I fixed the source of the P0171 code on my 2001 Ford F-150. This code means the O2 sensors detected a lean fuel condition …Re: '05 4.6L F-150 Missing P0171 P0301. by 3FOX » Sat Dec 17, 2016 12:04 am. The 301 code is a secondary side ignition failure. Since you swapped coils, it leaves the spark plug or cylinder fault. The 171 code for that bank can be the OX sensor is detecting the un-combusted air from that cylinder that has shifted bank 1 fuel table and set the ...This article will help you to diagnose diagnostic trouble code P0171 (System Too Lean Bank 1) and/or P0174 (System Too Lean Bank 2) on your Ford, Mercury or Lincoln 4.6L or 5.4L equipped car, pick up, van or SUV. Although you can apply this info to any Ford vehicle with a V6 or V8, this info concentrates on the Ford 4.6L and 5.4L V8 engines.A P0171 Code on Your Ford F150 is also called a “system too lean” for Bank 2. This code refers to two separate banks in the engine. The first bank represents cylinders one and two, while the second bank represents cylinders three and four. The PCM will set this code when it sees that the fuel range for these two cylinders is not in line ...I had only the p0171 code. My mechanic said the only thing he could find was a leak in the passenger exhaust gasket. He replaced it and cleared the code about 500-700 miles ago and hasn't came back on yet. Good luck. I heard this can be many different things. 2004 - 2008 Ford F150 - P0171 and p0174 on 4.6 2005 - Hey guys I recently bought my 05 ...The codes, regardless of which one, is detected by the Oxygen sensors. 171 is lean detection bank 1. As excessive oxygen in the exhaust gas. 175 is rich detection bank 2. As to little oxygen left in the exhaust gas after combustion. . 171 shifts the Long term fuel table for bank 1 to the rich side. When it reaches +25% the code is set.Diagnosing and repairing the P0401 Code on an 08 Ford F150 with the 4.6l V8 engine.Don't forget to connect with me on Facebook:https://www.facebook.com/Salem...Mar 23, 2015 ... Comments11 · F150 Runs Rough, Lean P0171 P0174 (SI Ep 6.2) · Diagnosing a Faulty Mass Air Flow Sensor: P0171 P0174 Lean Codes · FORD P0171 and...1997 - 2003 F150 - 97 5.4 F150 codes P0171 and P0174 - Seems like I have a problem common to a lot of others. It started out with a cel and code P0171. I cleared the code and ran it for a couple of days and the cel comes on again half way home from work.Aug 31, 2011 · runinning 28-30. Then your fuel PSI is low, yours should be: Engine running 28-50 psi. Key on engine off 35-45 psi. This could be due to a bad pump or a bad or leaking fuel regulator. Low PSI can set a P0171 lean code, so I would focus on solving this low pressure issue. In Elon Musk-like fashion, Ford CEO Jim Farley made bullish claims about self-driving tech and said its next electric truck will drive itself. Jump to In Elon Musk-like fashion, Fo...Re: 2002 ford F-150 Code P0171. by Chris's FX4 » Wed Nov 13, 2013 10:52 pm. Try cleaning the MAF first and check the PCV valve itself. Follow the PCV line from the valve on the passenger side valve cover to the back of the intake. There's an elbow back behind the intake up under the firewall, its hard to see unless you're practically sitting ...Jun 28, 2021 ... Tutorial para tomar en consideración cuando se presenta el código de falla P0171 en las camionetas Ford F-150. Debido a que en ocasiones ...1997 - 2003 F150 - P0171 Code - Hi, I have a 99 F-150 with about 150,000 miles on it. I am getting a P0171 code from my OBD II port. I had it checked at AutoZone. ... Ford F150 - P0171 & P0174 Codes. My F150 check engine light came on and I was able to use a code key to find out the problem codes. P0171 & P0174. There are articles online …1997 - 2003 F150 - P0171 Code - Hi, I have a 99 F-150 with about 150,000 miles on it. I am getting a P0171 code from my OBD II port. I had it checked at AutoZone. ... Ford F150 - P0171 & P0174 Codes. My F150 check engine light came on and I was able to use a code key to find out the problem codes. P0171 & P0174. There are articles online that ...Learn how to diagnose and fix the OBDII code P0171 Ford, which indicates a lean condition in the engine. Find the possible causes, symptoms and solutions on AutoCodes.com.P1131 is a diagnostic trouble code that applies to vehicles manufactured by Ford, including the F150. Trouble codes that start with P1XXX were reserved for manufacturers. This code occurs when the upstream O2 sensor on bank 1 fails a diagnostic test twice in a row. P1131 Quick Facts DTC P1131 is usually caused by a2001 f150 4.2L P0171 & 174. ... I have a 2000 f150 an was causing trouble codes for maf to appear ! Replaced mac couple times not long inbetween to change the iAt in intake duct system an no more problems with service engine light returning ! ... Ford Forum is a community to discuss all things Ford. Check out our discussions on the Ford Escape ...Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. Engine / Transmission / Drivetrain. Modular/Triton V8 Engines: 4.6L, 5.4L (97-10) Looking for recent topics? P0171 Code on 2001 4.6L... 3 posts • Page 1 of 1. pigman New Member Posts: 2 Joined: Thu Feb 12, …Re: 2002 ford F-150 Code P0171. by Chris's FX4 » Wed Nov 13, 2013 10:52 pm. Try cleaning the MAF first and check the PCV valve itself. Follow the PCV line from the valve on the passenger side valve cover to the back of the intake. There's an elbow back behind the intake up under the firewall, its hard to see unless you're practically sitting ...1997-2006 Expedition & Navigator - P0171 only on 03 5.4 - I'm getting only code P0171 on my 2003 5.4 Expy, any ideas? I thought if it was a vacuum leak I would get P0171 & P0174. The truck is still running and idling fine and fuel economy seems unchanged, I actually reset the code and it was off for about a week - now...1997 - 2003 Ford F150 - P0171 and P0301/P0302 After Spark Plug Change - 2003 4.6L V8 220,000 miles The truck was idling rough at first with generic P0300 code. Spark plugs were ashen a bit. I changed all plugs except #4 and #8 way in the back. The truck ran smoothly. The next two days the truck began to idle roughly....P0171 indicates that your Ford F150 is either getting too much air or not enough fuel. A clogged or damaged fuel injector will cause the air-fuel mixture to lean out in one specific cylinder. You may see a cylinder misfire code or fuel injector-specific code with P0171. See moreMaintenance Shop - P0171 (Bank 1 lean), P0175 (Bank 2 rich) at sametime - Original problem was running rough and no power with codes P0301, P0306, P0305 & P0306. I changed out the ignition coil, and all plugs, verified wires good. Little to no change, still runs rough. I can pull a plug wire off cylinders 1 through 3...On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses ...Last edited by Coleroad; 06-08-2023 at 10:30 AM. 1997 - 2003 Ford F150 - Another 03 4.2 P0171 P0174 thread - Long and short - 03 4.2 with the P0171 and P0174 codes. I changed the isolator bolts two years back and the IMRC bushings. DPFE valve, IAC valve, EGR valve, PCV valve, all 02 sensors, and MAF have all been replaced in the last two years ...Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. Looking for recent topics? 2001 F150 P0171 code. 3 posts • Page 1 of 1. raidersjake New Member Posts: 3 Joined: Sun Sep 16, 2018 8:32 pm Truck: 2001 F-150 XLT Supercrew. 2001 F150 P0171 code.1997 - 2003 F150 - Ford F150 - Codes P0171 & P0174 - My F150 check engine light came on and I was able to use a code key to find out the problem codes. P0171 & P0174. There are articles online that show the number of things to check to try to find the cause and fix. Q. I am a novice and have never worked under the...The most common cause of the P0171 code – and the P0170 and P0173-P0174 codes – is unmetered air entering the combustion system. Most of the time, this happens due to faulty or dirty mass ...ODB-II code P0171 Post by EvansLe » Tue Feb 06, 2007 2:40 am I've been dealing with a P0171 code (Bank #1 Lean) on my 2000 F150, 4.2L, 4x4, 5-Speed in the past couple of weeks.Sep 28, 2019 · 01-26-2007 11:01 PM. Reply. /. Modular V8 (4.6L, 5.4L) - 4.6 P0174 Code - I've looked around the forums quite a bit. I have not found anyone that has had the same issue. I have a 2000 Expedition with a 4.6, with 175,000 miles on it. What sticks out to me is, I only have the P0174 code, and everyone else seems to have that, AND the P0171 code ... 1997 - 2003 Ford F-150. If you shop at Amazon.com (for anything), use this link to help support FordF150.net! Looking for recent topics? Codes P0171 & P0174. 5 posts • Page 1 of 1. ... RkyMtnHi wrote:I had the P0171 and 174 codes on my '99 5.4. Turned out to be the rubber elbow on the pcv valve line.Aug 18, 2023 · How to fix a Ford P0171 engine code: System Too Lean (Bank 1) A lean condition exists if the engine is getting more air than fuel in the cylinders. Jul 23, 2018 ... This is a possible solution to this common code on the early 2000s Ford f150 and E150 trucks and vans. This is done due to TSB Ford issued ...1968-Present E-Series Van/Cutaway/Chassis - Help! P0301, P0302, and P0171 codes. - I'm currently hauling a 5-6k trailer across country. About 2-3 hours into the trip my service engine soon light came on. I got a code reader from Walmart and I am getting 3 codes; P0301 (cyl #1 misfire), P0301 (#2 misfire), and...Popular Mechanics Magazine can recommend trying a few troubleshooting steps to resolve the P0171 code in a Ford F150. One technique is to check for vacuum leaks using a smoke machine or by spraying carburetor cleaner around the intake manifold and vacuum lines while the engine is running. Another suggestion is to clean or replace …by cr » Thu Oct 21, 2004 12:28 am. I have a 1998 f150 with the 4.6L and am getting the Check Engine Light from hell. I had the codes read at AutoZone and it gave me the P0171 (Bank 1). They gave me some simple stuff I could try. I replaced the spark plugs (sucked), fuel filter, PCV valve, and checked for vacuum leaks.A P0171 Code on Your Ford F150 is also called a "system too lean" for Bank 2. This code refers to two separate banks in the engine. The first bank represents cylinders one and two, while the second bank represents cylinders three and four. The PCM will set this code when it sees that the fuel range for these two cylinders is not in line ...Posts: 20,236. Likes: 6,597. Received 6,509 Likes on 4,640 Posts. That code is for the air intake temperature sensor. It has nothing to do with the MAF or PCV valve. Either your intake temp sensor is unplugged, or bad. It is in the black intake tube between the MAF and throttle body. I'll see if I can find a pic.1997 - 2003 Ford F-150. Looking for recent topics? 2002 f150 4.2 engine codes p0171 and p0175. 2 posts • Page 1 of 1. Troybritten New Member Posts: 3 ... The codes are a p0171 and a p0175 codes The mechanics say they have never seen that before But the saw the codes and are scratching there heads on this. Top. 3FOX Hardcore Ford Truck FanaticP1149. Alternator 2 -high input. Wiring, alternator, ECM. P1150. Lack of Upstream Heated Oxygen Sensor Switch Adaptive Fuel Limit Bank 2. Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM. P1151. Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2.To diagnose the P0171 2008 Ford F150 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Maintenance Shop - P0171 (Bank 1 lean), P0175 (Bank 2 rich) at sametime - Original problem was running rough and no power with codes P0301, P0306, P0305 & P0306. I changed out the ignition coil, and all plugs, verified wires good. Little to no change, still runs rough. I can pull a plug wire off cylinders 1 through 3...I HAVE A 01 F150 WITH CODES P0302 AND P0171 REPLACED COIL, WIRE, PLUG, INJ, CHECK POWER TO COIL AND COMP TEST ALL GOOD - Answered by a verified Ford Mechanic. We use cookies to give you the best possible experience on our website. ... I have a 1999 ford f150 with a p1131, p0171, and p0302 codes present. ...How to fix a Ford P0171 engine code: System Too Lean (Bank 1) A lean condition exists if the engine is getting more air than fuel in the cylinders. (Air/Fuel...1997 - 2003 Ford F150 - P0171 code - I have a 1997 F150 with 4.6 ltr engine. I am getting one code and this one code only P0171. In my estimation this will eliminate most air leaks behind the MAF, a leaky gasket between the intake manifold and the TB, a leaky gasket between the TB and the EGR, bad fuel filter or pump...P1131 lack of H02S11 switch sensor indicates lean. P1151 lack of H02S21 switch sensor indicates lean. P0171 system too lean bank 1. P0174 system too lean bank 2. I am thinking of replacing the following parts: isolator bolts 55164. plenum gasket set MS94452. vacuum retainer bushings 47099. thanks.Oct 11, 2022 ... Comments14 ; P0171 Trouble Code: System Too Lean Bank 1 Diagnosis. Big Dog50001 Automotive · 2.5M views ; Does the Ranger Still Suck (Air)?! Let's ...May 2, 2017 · Fuel pressure stays 40PSI on the live data even at WOT. 1999 to 2016 Super Duty - 5.4 3v P0171 and p0174 - Looking for some help on my 2005 f250 5.4 with codes p0171 and p0174. I have replaced fuel filter, MAF, Checked for vac leaks by smoke and water test. Any help for things to check would be appreciated. The consumption of fuel increases whenever there is an issue with the air-to-fuel ratio of the gasoline mixture, not just for the P0172 trouble code in Ford. As a result, the fuel economy becomes much worse, and you'll have to fill up your fuel tank more often. However, this symptom could also mean a p0022 ford f150.Oct 11, 2022 ... Comments14 ; P0171 Trouble Code: System Too Lean Bank 1 Diagnosis. Big Dog50001 Automotive · 2.5M views ; Does the Ranger Still Suck (Air)?! Let's ...Learn about the P0171 Ford F 150. Discover common causes, possible fixes, and how to prevent this lean code problem in the future.by cr » Thu Oct 21, 2004 12:28 am. I have a 1998 f150 with the 4.6L and am getting the Check Engine Light from hell. I had the codes read at AutoZone and it gave me the P0171 (Bank 1). They gave me some simple stuff I could try. I replaced the spark plugs (sucked), fuel filter, PCV valve, and checked for vacuum leaks.Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. ... 97' F-150 4X4 4.6L Triton pulling P0300,P0171 & P0174 Extremely rough iddle and stalls occasionally. What should I look for? ... it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is ...1997 - 2003 Ford F150 - Error Codes P0171 & P0303 - 1997 F150 XL 4.6L (6 code engine) P0171 - Running Lean P0303 - Misfire in cylinder # 3 I read through tons of ...Apr 2, 2020 · 1997 - 2003 Ford F150 - 2003 f150 4.6 p0171 - Hey Guys, I know there are a million posts on this, but I think I'm having a somewhat unique situation. I have a P0171 code, and no P0174. The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0171 is set in along with the P0174 code, it is highly likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the Mass Air Flow (MAF) Sensor.Ford F-150 / F-Series Generations. 1997 - 2003 Ford F-150. Looking for recent topics? F150 Codes P0171 / P0174 Information. 58 posts 1; 2; 3; Next; 3FOX Hardcore Ford Truck Fanatic Posts: 3868 Joined: Mon Oct 22, 2012 2:53 am Truck: 02 F150 SCREW. F150 Codes P0171 / P0174 Information.Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. ... 97' F-150 4X4 4.6L Triton pulling P0300,P0171 & P0174 Extremely rough iddle and stalls occasionally. What should I look for? ... it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is ...Check engine light P0171 bank 1 mix too lean. The truck began idling rough.Replace the hose in the back of the air intake manifold. When you take it apart an...2004 - 2008 Ford F150 - P0171, p0303, p0353 - These are the codes I pulled after I got home from work today. So, I went to the dealership and bought a new COP ($87.42), and replaced it. ... 2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck. P0171, p0303, p0353. 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1997 - 2003 Ford F150 - Check engine light on with P0171 and P0174 codes - My 97 F150 4.6 v8 has been running rough lately. ... Code P0171 applies to Bank 1 and P0174applies to Bank 2. Code P0174 mainly applies to V6 or V8 engines because4-cylinder engines generally have only one bank, though there are a fewexceptions. Some of the high .... Campbell freightliner llc

ford f150 p0171 code

You are here: Ford F150 Home » F150 Forum. Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... code P0171. 6 posts • Page 1 of 1. txford09 Regular Member Posts: 92 Joined: Sun Mar 09, 2008 2:42 pm Location: Nederland, TX. code P0171.I just saw the intake and assumed that was the truck in question. 2009 - 2014 F150 - F150 5.0 P0171 P0174 - For the last few months my truck has been throwing an intermittent check engine light due to the same code every time - P0171. The dealer has allegedly checked everything and has given me the We have done all we can do speech.I'm a DIY but have some knowledge, skill and experience when it come to working on modern (1985 - present) vehicles. Problem: 1999 Ford F150 truck, 2WD, 5.4L engine. The OBD II system has captured the dreaded P0171 and P0174 codes. "System adaptive fuel to lean" Bank 1 and Bank 2. I have replaced the fuel filter, air filter.P 0174, p0171, p0401 Problem solved. Just a quick posting to thank the F150 forum for being there. After experiencing the above "System too Lean" codes and "EGR flow insufficient" I read nearly every entry on solving this problem for my 2002 F150 4.2L. This truck has 252,000 miles on the odo, and still gets 19MPG, but when pulling a trailer I ...If both banks are affected, the what alloro suggested is the usual culprit 90+% of the time. 1997 - 2003 F150 - 98 Ford F150 4.6 issues (P0171) - Just received that code last night, I also saw the long term fuel trims on bank 1 spike to 30 bank 2 is in the 20s. These two have been higher than they should be for a while but seem to be getting worse.Re: '05 4.6L F-150 Missing P0171 P0301. by 3FOX » Sat Dec 17, 2016 12:04 am. The 301 code is a secondary side ignition failure. Since you swapped coils, it leaves the spark plug or cylinder fault. The 171 code for that bank can be the OX sensor is detecting the un-combusted air from that cylinder that has shifted bank 1 fuel table and …P0171 – Fuel Trim System Lean → Bank 1: P0171 indicates that the side of the engine with the first cylinder (Bank 1) is running lean. P0174- Fuel Trim System Lean → Bank 2: P0174 indicates that the side of the engine with the first cylinder (Bank 2) is running lean. On inline engines, this code is not available, since there is only one ...Jan 8, 2017 · 1997 - 2003 Ford F150 - P0171 and P0304 codes - I have a reg cab 4.6l f150 coding p0171 (bank 1 too lean) and p0304(misfire on cylinder 4). Being the truck is backfiring at the bottom of gears (its a standard), and stuttering in the gear and up hills, I was thinking fuel pump or clogged fuel filter. 2000 Ford F150 trouble codes P0171 & P0174. by wrestling4gold » Fri May 01, 2009 6:42 pm. My check engine light is lit up and the trouble codes indicate that the vehicle is running too lean on bank 1 and bank 2. I am not sure what to look for to fix this problem since I cannot pass emissions to get my truck registered.In Elon Musk-like fashion, Ford CEO Jim Farley made bullish claims about self-driving tech and said its next electric truck will drive itself. Jump to In Elon Musk-like fashion, Fo...2004 - 2008 Ford F150 - P0308, P0174 Codes - I have a 2008 4.6L STX 4x4 model F150 (140k miles) that is idling with a little more vibration than normal at around 750 rpm, vibration increases as I gave it more gas and accelerate, also there is some hesitation during acceleration. ... 2004 - 2008 Ford F150 General discussion on the 2004 - 2008 ....

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