I just purchased a 1994 Toyota Camry LE V6 Coupe with only 50K miles from an Estate Sale however the ChecK Engine light was on. Took it to AutoZone they said it was the Bank #1 (before the Cat) O2 Sensor, purchased the Denso factory replacement part, installed and reset. The light went out for a couple of days then came on again. Went back to AutoZone they said it was the Bank #2 (after the Cat) O2 Sensor so replaced and reset. Light went off for a week then came back on? Called AutZone, the guy said Toyota had problems with false "Check Engine" light readings on the early V6 motors, what do I do?
Make no repairs until a proper diagnostic is run on the cause of the check engine light by a factory trained technician.
Hello again
I am very sorry to hear about your money problems, but the fact remains that you need special training, specialized testing equipment and a factory diagnostic manuals to work on these kinds of electronic engine control system issues/ problems. Guessing as to the cause will cost you more in the end and I for one will not be doing any. It needs to go to a well equipped shop, this means the dealer in most cases. I speak from 35 solid years of experience in the auto repair business. Also never accept advice from a screen reader at any auto parts store, they will also cost you money. In my state they are not allowed to hand out advice on car repair related to codes read because of pending law suits by unhappy customers whom were naive enough to actually accept the advice from them on what would fix the problem(s)..
This advice is based on 1000's of questions I have answered and read on this site over a 4 year period and the feedback I recieved about what got fixed and what duidn't.
The light will come back on trust me.
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SOURCE: Engine light came on took 2001 Toyota Camry to
this is just an oxygen sensor like on most American cars. might cost $60 to $80 im guessing.
SOURCE: O2 Sensor Bank 1 Sensor 2
That is the O2 sensor right behind the cat. converter. When the cat is clogged it can shoot contaminates in the O2 sensor so sometime just cleaning the sensor will make it work again, if not it will need to be replaced. Mark - ABKS
SOURCE: P0741 torque converter stuck off code
firstly it could be that the check engine light is mal-functioning or not. why not drive it as they said and if after that its still on get back to us.
Testimonial: "This is very helpful information. I just would like to know, once the cycles completes will the check engine go out on its own or not?"
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Note: Toyota wants $200 just to check it out!
Thanx Dennis I understand, however the $200 the Toyota Dealer wants just to check it out, it is much more than the parts I have replaced, also I did find on the Internet that there may be a Technical Issue with the 3.0 V6, in fact in 1996 Toyota did a recall of the head gaskets due to design flaws in models from 1988 through 1995. My problem is that the vehicle may have low miles but it is way past the warranty period? I am wondering if the AutoZone guy was right and Toyota did have problems with faulty "Check Engine" light readings? Note when the light was out the vehicle passed both the California Smog Tests with flying colors.
Contact the dealer or Toyota customer service directly, DO NOT LISTEN TO AUTOZONE.
Toyota says their $199 diagnostic charge does apply to the final bill which they estimate at $400! Wow I only spent $70 each for the Denso factory replacements and they say they only use their parts?
I talked to a Toyota mechanic and he said the car looked as though it had never been driven on the freeway, so he said either the ERG or the O2 Sensors may be sending a false reading as the car passed California Smog no problem. He suggested filling up the tank with premium gas and adding a fuel injector cleaner and gas supplement then driving ******* the freeway for at least half an hour, then turn the engine off, remove the EFI 15 Amp fuse
under the hood, turn the key to the on position, turn off, replace the fuse and restart. Guess what it worked, the light has been off the past few days, fingers crossed!
A mechanic who knows about Toyota told me the car looked as if it had never been driven on the freeway so he suggested filling up the gas tank with premium adding a fuel injector and gas supplement and driving ******* the freeway for at least half and hour. Then turn off, remove the 15 AMP EFI fuse under the hood, turn key to the on position, turn off, replace fuse and start. Guess what it worked! The light has been off the past few days, fingers crossed! Hope this saves you guys some money :-)
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