Engine warning light
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Author Topic: Engine warning light  (Read 3165 times)
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godrulz
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« on: August 10, 2003, 09:15:45 AM »

I had my fuel filter replaced. A day later, the engine warning light is on. I found the gas cap on crooked. Do they remove the cap to do the filter (bleed pressure?). It should reset after 3 cycles, but it has not. It usually is an emissions issue according to the manual (moisture? poor gas). I have had the light come on before, but it eventually goes off. One time they pulled the error code, but it was vague. Any experience with the engine light? Is it ever ominous and warning of impending engine damage?
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JAztek
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« Reply #1 on: August 10, 2003, 12:40:58 PM »

I've had the light come on 3 times-twice because of the gas cap and once when it wouldn't go off was because evidently an oil pressure switch needed to be replaced according to one of the >2000 codes (so said the service tech at my dealership).
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Tom Moog
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« Reply #2 on: August 11, 2003, 08:49:55 AM »

The engine light is controlled by a computer that monitors all of the various sensors on your engine and trans. When the computer gets a reading that it isn't expecting, it turns the light on. It doesn't necessarily mean that something has gone wrong with the engine, only that the computer is not getting the correct reading from a sensor.

I have had a leaf in my Mass Airflow sensor that caused the check engine light to come on, so sometimes these are nonsense things that won't cause any problems. The computer DOES, however make adjustments to try to correct the issue which can cause loss of power, rough running, or excessive fuel consumption. It is definately something to check out.

Before spending any money, disconnect the negative battery cable for about 5 minutes to clear the computer's history. Re-connect it and if you still have your check engine light, you should take it to a service center.
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Tom Moog

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« Reply #3 on: August 14, 2003, 07:41:13 PM »

Had my 'service engine soon' light come on today, while I was on my way to the dealer anyway.
Turned out to be a sensor gasket on the gas tank that was venting the tank.
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godrulz
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« Reply #4 on: August 16, 2003, 09:07:01 AM »

My light code was an evaporative emissions problem due to the crooked gas cap. The service advisor scanned the computer and reset the light in a minute and I was on my way. I thought it would reset quickly by itself, but he said it could take 30 driving cycles.
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MQV Son of Quinn
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« Reply #5 on: August 18, 2003, 07:16:48 AM »

I've had a few codes pop up. One was for a gas cap not being on right and the other was an update to the system codes. None of them changed the way the Tek drove. But it;s nice to be able to cruise into your dealership and have it looked at wuickly.

Jack

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Jack Egan
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peterbright
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« Reply #6 on: August 18, 2003, 07:23:55 AM »

I've heard that you can disconnect your negative battery terminal for 5 minutes and reset a bogus code.  Any truth to that?  Would it affect the key fob synchronization to do that?
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MQV Son of Quinn
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« Reply #7 on: August 18, 2003, 07:37:51 AM »

Peter:
Scroll up to Tom's reply for an answer to the battery issue. And it shouldn't have any effect on the workings of the key fobs!!!

Jack

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Jack Egan
Brunswick, Ohio
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Vietnam Veteran 3 tours of duty with the U.S. Navy
Realtor NextHome Inc.,
Former owner of Mighty Quinn IV
04 Black Tek MQV Son of Quinn
1SC with 17" wheels, overhead console, OnStar, steering wheel controls, Kenwood audio system with Sirius. Owner designed 10 speaker system includes, MTX-311-D Amplifier and 2 JL 6" Subwoofers, Infiniti Reference series, 6-1/2 componentfront doors, 6-1/2 rear door speakers, 4" cargo area speakers plus a Infiniti Reference series Amplifier to run them all.
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peterbright
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« Reply #8 on: August 18, 2003, 09:11:43 AM »

That's where I probably "heard" it!
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