Question about 2000 Oldsmobile Intrigue

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My car was in storage. battery was removed for charging. now car unable to take emissions test. how do you reset computer

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Computer will re-set itself after approx fifty restarts. To avoid this and loosing radio settings in the future, you can attach a small power supply into the lighter socket (available in many parts stores), or if you are really careful you can use a jumper battery attached to battery leads, but if you accidentally ground + terminal anywhere, you can do a lot of electrical damage!

Posted on Feb 20, 2009

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Once the computer looses its memory, the car has to be driven under several different conditions before it has stored the necessary info for the emissions test.
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Emmissions test can't be finished because the computer needs to be reset after a new battery cable


That should be enough time to reset the emission systems. Did you clear codes since then or remove the battery or one its cables for another reason?
Check to make sure all the battery cables are tight and clean. Sometimes if a cable doesn't have a good connection to the battery due to being loose or dirty, it may not allow the battery to keep the car's memory when it's shut off so may reset the emissions.

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Disconnecting the battery might reset the check engine light on some cars. However, instead of doing so, I'd recommend to bring your car to a dealer or a mechanic for proper diagnostic, and here is why:
- not all cars will clear the code after disconnecting the battery
- often, the problem may be actually covered by the warranty and repaired free of charge by your dealer. For example, if you have the code P0420 - Catalyst System Efficiency Below Threshold it's very possible that your catalytic converter is still covered by the original emission warranty and might be replaced free of charge (would cost you close to $1000 otherwise).
- some problems, if not repaired in time may cause a serious damage and more costly repair.
- disconnecting the battery will cause basic settings of the vehicle's computer to be erased (e.g. idle settings, fuel trim settings, transmission shift points, etc.)
- the Readiness code will be erased, which may prevent your car from completing an emissions test. (Readiness code is an indication that certain emission control components of your car have been self-tested)
- the radio, if code-protected, may be locked after disconnecting the battery
- the "check engine" light will come back anyway if the problem still persists. Thank you.

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2 Answers

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1 Answer

I changed the battery and now the computer won't "reset"


Did you change the Batt right before the emissions test? If so bad idea. Yes the car needs to be driven for some time before the computer sets up timing fuel and spark carrectly. Drive some more then try the test again, should be ok and pass

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Replaced battery


If the battery is out long enough, the emissions control computer may have lost it's mind. I haven't had that happen on my XL-7 yet but last year it happened on the Miata while it was in winter storage. The Miata shop manual had this two page instruction set that I had to go through to get the engine to run right again (and pass the emissions testing). Get your hands on a real Suzuki shop manual set (NOT Chiltons, they are just general reference). If this is a possibility, the real shop manual will have a "reset" procedure I am sure.

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