i have a friends ZR2 and she come over with it idling rough, and stalls when cold, i ran the codes and came up with P0171 bank 1 to lean, my book just tells my the came thing but dont give any ides of where to look.
the other thing that i dont under stand is IT ONLY HAS ONE BANK lol.
the car wont be back here tell this weekend and some one has already told me to look at the PVC valve and hose, just thought i would ask for any other ides on what to look for or where.
chevy guy working on a ford again damn this has got to stop lol
thanks for any help any one may offer
toad
2007-11-07 05:38:49 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Ford
I'm the one who told you about the PCV tube....
It should have the 2.0 DOHC motor on it....
The one guy is wrong about vs and stuff...... Under OBDII (which is the standard that the car runs with) all 4 and 5 cylinder inline motors are considered bank 1.. only on the v engines will you see a bank 2.
I've seen some o2s go out before on these cars, but they set p1151s (lean part throttle cruise) instead as the o2 will get lazy going down the highway...
The MAF is one good point but without a pro level scan tool (to check some values such as Barometeric pressure) it would be hard to see... also the MAF unless totally screwed won't usually start affect the car bad until it gets hot.... unplugging the MAF connector (big round connector) will usually eliminate the MAF (the car can run without the MAF.. if it runs better cold, then it can be that)
But with what you are describing.. that's why I said look for a vaccum leak in the PCV tube for.... the elbows degrade tot eh point they open up pin holes in them.. you won't hear them leak sometimes but putting your finger over the leak picks the engine idle back up....
..and don't feel bad, I'm a Ford tech who in the past couple of weeks, have worked on a couple of Gms and a Nissan Maxima
2007-11-07 13:10:11 · answer #1 · answered by gearbox 7 · 1⤊ 0⤋
None of the above. Bank 1 tells us you have a V engine, 6 or 8. The bank 1 is the bank with #1 cyl. It varies by vehicle make. The lean is a message from the O2 sensor to the ecu. It does not indicate a bad sensor. A faulty injector would probably cause a misfire code also. The pcv valve is connected to the throttle body so would not know which bank the vac. leak is comimg from. You mention problem when cold. I gather it runs ok when driving. If this the case I would suspect The idle air control (iac), the throttle position sensor (tps) and the engine coolant sensor (ecs) in that order. The (iac) and (tps) can be cleaned and checked for sticking. The (ecs) replaced if needed. The (iac) and (tps) are located on the throttle body. Check the throttle plate and body also. May need cleaned. Chevy or whatever the codes apply to all vehicles. The above rant is known as diagnosticts. When you get a MIL (malfunction indicator light) follow the indication to the source, as we have done here. Hope this saves you some time
2007-11-07 06:44:58 · answer #2 · answered by tronary 7 · 0⤊ 4⤋
I would start by replacing the O2 sensor. Carbon deposits could cover an O2 sensor, preventing it from reading correctly, and the ECU could think the engine is running a little lean, so it adds more fuel to the engine, making the engine rich, producing more carbon deposits, and eventually setting a code. Also, It's 8 years old, probably has close to 100k miles. Newer 02 sensors shouldn't fail, but this one has some miles on it, and has experienced probably thousands of temperature changes.
2007-11-07 08:14:19 · answer #3 · answered by Ryan M 5 · 1⤊ 1⤋
I would think this would have to do with the MAF sensor or another vacuum problem.Could also have a fuel system problem clogged fuel filter ect but its more likely to be an airflow or vacuum problem.
2007-11-07 07:34:18 · answer #4 · answered by Johnny 4 · 0⤊ 0⤋
2 things to check...1)pcv valve and hose (most common) and 2) Mass air flow sensor
2007-11-07 05:53:32 · answer #5 · answered by Anonymous · 2⤊ 0⤋
I'm gonna say "new injectors", one of the (I'm guessing 4) may be clogged, or time for a new oxygen sensor, that works in sync with the cars ECU, and tells it when to run it rich or lean. (Hot days, cold days, start up, idle, etc...)
Cars are a pain, no matter the make. My '91 Nissan 300zx was always having trouble (CURZED), and was triple the price to repair vs. domestics and Hondas. >:D
2007-11-07 05:45:48 · answer #6 · answered by Anonymous · 0⤊ 4⤋