Ford F-150 - 1997-2003 :: Bank 1 Or Bank 2 Too Lean Codes At Idle When Started Cold?
I've been having this problem since I've gotten the truck about year ago. it has very high long-term fuel trims and it seems no matter what I do I cannot get them to go down my fuel trims at idle are 39 Bank1 and 33 bank2 they go down to around 12>7 while driving what could this mean. And even weirder occasionally I get Bank 1 or bank 2 too lean codes at idle when cold starting???? 1997 Ford F150 4.6 ......
View 7 RepliesFord F-150 - 1997-2003 :: 1999 - Check Engine Light Came On / Code P0171 / System Too Lean Bank 1
I just bought a 99 f150 and the check engine light came on with code p0171,system too lean bank 1. It runs and drives fine but has a strong smell of gas when I shut it off.
View 4 RepliesFord F-150 - 1997-2003 :: CEL On - Bank 1 And 2 Lean?
What does this mean?? The o2 sensor(s) is reading lean?? 2001 F150 4x4 5.4
There was also an evaporator system code, but I think maybe someone left the gas cap loose? I unhooked the battery and it cleared everything. Truck started fine for a few tries. Will have it driven tomorrow to see if codes come back.
My reason for this is it was getting hard to start. I confirmed that fuel pump relay was not coming back on when cranking every time. Randomly it's fine, other times it won't start. Noticed it had CEL light, had it read at local Azone.
Don't know what to do about the "lean" issue? What would tell the pump relay to NOT turn on?
I removed the cover from the relay and inspected points, they were fine. Check with ohm meter=good. Watched it function without the cap on it. Would prime every time, but not come on when cranking every time.
Ford F-150 - 1997-2003 :: 2002 5.4L - Lean Bank 2 / EGR Insufficient
My truck is a 4x4 lariat, I've replaced both dpfe valve and egr, and the intake manifold gasket. Still getting the egr insufficient code. It went away from a few months after replacing the intake manifold gasket but has returned. Where do I go from here? I vacuum tested the egr and that's working fine. Should I buy ANOTHER DPFE valve? Where do I go from here I'm desperate.
View 14 RepliesFord F-150 - 1997-2003 :: Rough Idle - Right / Left Bank Too Lean?
I have a rough idle. I have replaced upstream o2 sensors, plugs, wires, fuel filter, dpfe sensor, cam sensor, and cam synchronizer. This has only moderately improved my problem. I still have the right bank, left bank too lean codes. Could it be something as simple but hard to find as a vacuum leak?
View 8 RepliesFord F-150 - 1997-2003 :: Codes P0304 And P0316 - Lean Bank 1 And 2
2003 F150 v6 2wd 170k ... For a year I've only had codes P0171 and P0174 (lean bank 1 and 2). I was told it wouldn't hurt anything... I think now I should have taken care of it.
Anyway 3 weeks ago my truck started running a little rough. It was sputtering and had trouble getting up to speed, sometimes also the air switches from vent to defrost until switch gears and rpms go down. It gradually got a lot worse over 10 days while part was otw. A week ago i changed MAF and cleaned the black thing it's inside of. It started running better but still not good. I pulled my small trailer 2 days ago and it got worse after dropping the trailer.
Today checked codes at AZ and lean codes are gone and have p0304 (#4 misfire) and p0316 (crank sensor problem). Is this related.? Also Right before all the trouble I changed battery and alternator. Also i read online that MAF needed 2 weeks to relearn the way I drive to get correct gas/air ratio? Is that correct?
Also I read so many different things I needed to do during installation... Some say I need to turn key to the on position after unplugging old MAF then plug new one in... turn key to on position 10 times, Rev up engine, drive it rough for the first 2 minutes... etc. Is there a correct way to do it or is it vehicle specific?
Should I start by changing spark plugs and coils? The guy i bought it from and trust said he changed spark plugs right before I bought it. Will it ruin truck if I drive it? I've read so much but everyone says so much different things on the same topic. I'd what to start with or if this is related.
Ford F-150 - 1997-2003 :: Codes For Large EVAP Leak / Cylinder 6 Misfire / Bank 2 Lean
Here are the codes I'm getting:
P0455 - large evap leak
P1451 - main control (evap canister)
P0306 - cylinder 6 misfire
P0174 - bank 2 lean
are these all related? Or two separate issues. I have replaced all the evap lines with new lines. I have a new egr valve, and exhaust manifolds, and what should I look at 1st
Ford F-150 - 1997-2003 :: 1999 - Check Engine Light Codes P0171 And P0174 Lean On Bank 1 / 2
I have a 99 f150 with the 4.2l v6 with a 5 speed 173000 miles. I picked it up not to long ago. When I first got it it had both the P0171 & P0174 lean on bank 1&2 it was also siting for a while. I replaced the fuel filter which was filled with black fuel, also changed the PCV valve, cleaned the MAF sensor, and changed the oil. I cleared the code, drove it for a little bit and the light came back on after 20 miles.
I then proceeded to replace the upper and lower intake manifold gaskets. Upon doing that i noticed that i was missing one of the linkages for the IMRC. I went to the junkyard and pulled off another linkage rod off the same motor. ordered new plastic clips, put the IMRC on cleaned everything up and began putting it back together. I also cleaned the Injectors while i had them out as well and put in new spark plugs and wires.
Put everything back together. code was cleared since the battery was disconnected. drove it and then the engine light came back on again. this time it was only the p0174. so i then both the upstream and downstream O2 sensors on bank 2, reset the code and it came back on again. I'm lost.
Ford Fuel System :: 2003 F150 - Service Light Randomly Comes On / Code For Left Bank Running Lean
2003 f150 supercrew with 166,000 miles on it. Daily driver. Service light randomly comes on and when code reader was put to it shows "left bank running lean." Will clear it and will randomly come back on. Truck seems to be running fine. No issues engine. Bad sensor? Or bad injector? Maybe way to test?
View 1 RepliesFord Excursion :: SES Light Came On About 15 Minutes Into Drive / Code P0174 - Bank 2 Lean
After installing Banks headers and full exhaust, I took my truck for another test drive this morning. SES light came on about 15 mins into drive and is telling me P0174 - Bank 2 Lean.
So that's the right/drivers side - my list of things to go check
O2 Sensor plug on that side
The MAF
The IAC
Vacuum lines ...
Prius (Gen 1) :: Lean Condition In Bank 1, Code
I have a 2002 prius with 130,000 miles on her, and so far so good except for a small problem for the last three months, I get an intermittent P0171 code. I know it means Lean Condition in Bank 1. However, I can run the car for weeks without it coming on. If I go full throttle getting onto the highway for example it may come on, but even then its not all the time. Not sure why only full throttle. But if I drive her gently, I will never see the CEL at all.
Fuel economy is around the usual for me at 46-49 mpg with average speeds of 75-85 mph. I don't think its vacuum related.
Ford Super Duty (1999-2016) :: 2008 F350 - Keep Getting A Lean Bank Code - O2 Sensor?
I keep getting a lean bank code. I have cleaned tb and replaced one of the rubber lines. It only comes on when I take a good ride with the truck. Not sure what else it could be. I'm thinking O2 sensor maybe.
2008 F-350 5.4 3V. 65k miles
Golf V R32 :: CEL With Code P0171 And P0174 - Lean Bank 1 And 2
I am having a difficult time trying to fix my CEL issue, The vagcom scan says P0171 & P0174 Lean banks 1 and 2. I don't believe both O2's went out I have Checked and cleaned the MAF Sensor did a quick vacuum leak inspection and all seems good. I have a GIAC ST 1 and an AFE intake with noise pipe delete. I can reset it but it returns after a day or so.
View 1 RepliesFord - Explorer :: 2003 V8 - CEL Came On - Too Lean Fuel Bank 1
Explorer 2003 - 116 mi V8... Has been idling poorly at about 750 / 800 rpm never stalls in idle.
Check Engine Light came on - Read code said Too Lean Fuel Bank 1
Reset codes. After a couple hundred miles Check Engine Light
Once again Check Engine Light
Same error code Too Lean Fuel Bank 1
Ford F-150 - 1997-2003 :: Code P0172 / Bank One Is Too Rich
So my truck is reading a code at P0172 which means bank one is too rich. I replaced all of my o2 sensors, cleaned my MAF, and replaced PCV and hoses connected to it. What else could it be?
View 3 RepliesFord F-150 - 1997-2003 :: Code P0340 - Cam Position / Bank 1?
The p0340 code is the cam position right? Ready says bank 1.. Is there 2? Where the bank one is? And do I need to get on tdc on cyl one first or not?
View 3 RepliesTacoma :: P1071 Error Code - Bank 1 System Too Lean
I've searched for this and haven't come up with much other than the same error code for a bunch of other vehicles, and a bunch of different responses. My Tacoma is a 2000 PreRunner, 3.4 liter engine.
The exact code I get it is:
P1071
bank 1 system too lean
What this could be?
Toyota - Camry :: Code P0171 - Lean Bank 1 Sensor 1
I have a P0171 code (lean bank 1 sensor 1) on my 2002 toyota camry 4 cylinder. I don't have any other codes except for an unrelated P1780 neutral safety switch code. It has had both codes for over a year.
I have replaced the fuel filter, the upstream o2 sensor, and the PCV valve. I also cleaned the MAF sensor. The mechanic performed a smoke test and found no vacuum leaks. Did a fuel pressure test and it's normal. Mechanic thought it would be fuel pressure because the car starts a bit slow when cold, but nope. The car runs great and still gets great gas mileage. I've never experienced a misfire in my 12 years of owning the car. I am asking because I am at a loss as to what it could be.
Ford F-150 - 1997-2003 :: F250 - Code P0153 Bank 2 Sensor 1
1997 f250 LD pick up 5.4L engine 131000 miles
Here is my story week ago code came on p0153 bank 2 sensor 1
Slow response ... now I been reading around and some people say bank 2 is passenger side other say it is drivers side or bank 1 is where cylinder 1 is , the point is I'm confused here for bank locations and sensor locations .....