So I’ve been dealing with a continuous check engine light on my car for over 2 years with several hypothesis from different shops. The one symptom my car has is that from a stop or slow speed it sometimes hesitates to actually move when giving it gas. Then it will suddenly kick in and all is fine. …

Your vehicle doesn’t have seven O2 sensors. There’s only two. One before the catalytic converter and one after the catalytic converter. And the only one that can have an effect on engine performance is the O2 sensor before the catalytic converter. So if they’re saying there’s a problem with an O2 se…

Any chance you misunderstood what they said and took the word “several” to mean “seven”. If your car had 7 O2 sensors, which it does not, you would not likely be getting off the hook for a total replacement cost of 750 dollars. Other than agreeing that you should get a parts house to scan the car …

It is possible that the first mechanic used an aftermarket O2 sensor that is not an exact match for the application, or the replacement sensor might actually be defective. I would start with that. If the code pulled is a P0420, which seems to be common on Corolla’s, then I wish you the best of luc…

A good tech can display the signal traces from both O2 sensors simultaneously on an oscilloscope and see exactly what’s going on, even if it turns out that the wrong O2 sensor was used…the signal will trace out of spec. Let your fingers do the walking through the yellow pages and seek out a shop tha…

Sounds to me like they are giving you the run around. You need to find a shop with a good reputation. A corolla does not have seven 02 sensors. You should get the code from autozone first before going into a shop. Also research the code you receive along with “Technical Service Bulletin” your code w…

It really would help us if you had included what year the Corolla is, how many miles are on it, and which engine it has. Manual or Automatic might sometimes make a difference. That check engine light code would be very helpful also. Regardless of what year Corolla it is, it most likely only has 2 …

Annoying check engine light & minor problem won't pass emissions test

Maintenance/Repairs

oldtimer-11 December 30, 2010, 2:58am 2

You have to tell us what the code was- for example p0112 etc.

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Annoying check engine light & minor problem won't pass emissions test

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