Engine Light

Asked by Jun 25, 2016 at 04:51 AM about the 2007 Chevrolet Impala LS

Question type: Maintenance & Repair

I put a cold   Air intake on my vehicle and
now the engine light stays on.  I
disconnected the battery for a couple
hours it went off for about five minutes and
now it's back on have any ideas

3 Answers

72,395

May be the Mas Air Flow sensor, and is the PCV hose hooked up? All original items in the air intake duct must be hooked up. Also just have the computer scanned for codes, this would tell you where to look for the problem.

49,425

If the filter is an oiled type it may be over oiled and that can contaminate the mass air flow sensor. Another possibility is the mass air flow sensor is not properly plugged in, is in backwards or is dirty. You can clean it by spraying with mass air flow sensor cleaner, just follow the directions on the can. Also check all the clamp connections. They need to be secure and the piping needs to be fully seated.

1 of 1 people found this helpful.
72,395

Forgot about the oil there Bob, an over oiled air filter definitely set off some sensors, causing the check engine light to come on. Try cleaning the Mass Air Flow sensor like Bob is saying.

1 of 1 people found this helpful.

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