Question about 2001 Toyota Corolla
I have another problem on my 2001 toyota corolla and I was wondering if you could help me. I refuse to bring the car to the dealership since I know for a fact I will get screwed! Like I stated in the last thread, everything has been replaced as far as the exhaust system goes. I still have the check engine light with a P0420 code for bank 1 and 2 and I do appreciate the advice you gave me on that. I noticed 3 days ago that the car is hesitating when I am at a stoplight once in a while or after I start accelerating after I have been at a stop light. The car is starting fine and my gas mileage is fine. I have a new code that is a P0171 code which states the system is too lean. I have read that it's the MAF and that it should be cleaned. My boyfriend cleaned it last night with electronic cleaner. When he put it back in the car and I started the car and checked the codes on the check engine light, that code went away, which I thought it was fine. I cleared the code last night and I drove it a little today around the neighborhood to test it and the same thing is happening as far as the hesitation goes. The check engine light has not come back on yet. I have ordered a new MAF since I think it is faulty, but I would like your opinion since I respect someone like you and not the crooks at a Toyota dealership that are only in it to make a buck. I want to add that the last 02 sensor that was replaced was the one before the converter closer to the engine and a body shop did this. Ever since they replaced that one, I noticed it was harder to accelerate and then I started getting the hesitation about a few weeks later and then the P0171 code came on. I am thinking of replacing the MAF and also maybe replacing that 02 sensor since it may have been faulty. Sorry I am rambling. Thanks. Any advice is appreciated. Thank you so much.
If you had a bad MAF, the check engine light would have come on instantly. Replacing the MAF will NOT cure your issue. P-0171 is a common code, and cleaning it always eliminates the P-0171. Regarding the sensor, there are 2 different ones, and they do NOT interchange. If your body shop put in an "aftermarket" air-fuel sensor (the one closest to the engine), you can expect hesitation issues.
Posted on Sep 29, 2008
Yes i would replace the front o2 as it is the one that controls fuel maps especially if your getting the low voltage, i would replace with o.e.m., the dealership not the autozone knockoff, but you can install it easily and dont go paying anyone if you have one of those handy boyfriends in your toolbox ; ). i would do that and if its been a while throw some new plugs and wires on there to. should fix it up, i wouldnt worry about the maf. sorry for being so late with this reply, ive been sick this last week and sleeping alot i appologize and promise to answer your questions sooner next time, once again sorry, and take care, make sure to keep me informed about whats going on with your car.
Posted on Oct 06, 2008
Well I got the 02 sensor from Rock Auto. It is a bosch, but maybe it was an aftermarket one. Do you have a brand you recommend???
Posted on Sep 29, 2008
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Posted on Jan 02, 2017
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