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You washed the engine because it has an oil leak you think its the valve cover gaskets but now the check engine is on it was missing but you ran it and it cleared up but the engine lite is still on?
Ed317
The "check engine" light comes on when a code is tripped in the computer. Even after the problem is corrected the light will remain on for either a specified amount of time operating properly or a specified number of miles without problem. If you wish to reset the computer (thus clearing the code from the computer) it can be done one of two ways: 1. If its 1996 or newer, hook it up to a EBD II code reader and reset. (while AutoZone and other parts stores have these they are not supposed to reset codes, only read them because it can cause problems with warranties). 2. Disconnect the battery for a period of time (usually 10-12 seconds is sufficient but a minute or two is best). Remember when disconnecting the battery to always disconnect the negative cable first (really no need to disconnect both). If the code reappears then a code is still being tripped. You can have the computer read at your local AutoZone and they will tell you the code and what it means.
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∙ 15y ago
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