Question about 1993 Buick Skylark

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Engine starts running rough after warming up.

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The egr valve should be opened when warm If not the engine will die out or run very rough

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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1 Answer

Having trouble with engine killing or running rough even after it's warm.


not for sure but it could be your cam sensor. if the check engine light is on then take it to a parts store and they can run a scan and give you more information

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I'd take a look at the temp sender...the engines computer may be "thinking" the engine is still cold when it's not. That would cause it run rich (and rough) after it's warmed up. Generally the sender can be tested with an ordinary volt/ohmeter but you will need the specifications available in most inexpensive manuals. As with any complicated electronics system, I can only give you my best guess, without the luxury of doing any hands-on testing myself.
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