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Old 11-11-2012, 02:15 AM   #1
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Default Rough Idle and Sputtering

Ok so I have a 1994 buick park avenue and it would cut off while i was driving on the highway and the check engine light came on, I thought it was because the radiator was the issue so I replaced it. Then it stopped cutting off for a couple days, and then started cutting off again. Then I was told it was the ignition module so I replaced that and it ran fine and changed out the tensioner pulley assembly today and now it has a rough idle and the rpm gauge goes up to 1500 rpm and drops down to 1000 rpm but sputters. Anyone know or have an idea on what it could be?
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Old 11-11-2012, 10:00 AM   #2
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remove and clean iac and seat. inspect vacuum hoses, check fuel pressure
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Old 11-11-2012, 04:57 PM   #3
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Quote:
Originally Posted by jwfirebird View Post
remove and clean iac and seat. inspect vacuum hoses, check fuel pressure
Where would the iac be located?
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Old 11-12-2012, 05:22 PM   #4
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on the home page goto tech info/trouble shooting and test proc. there are pics of all the sensors and testing
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Old 11-13-2012, 05:41 PM   #5
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and I just cleaned my IAC on 97 Pk Ave...photos below in link
https://www.gmforum.com/park-avenue-...avenue-304014/
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Old 11-13-2012, 08:45 PM   #6
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Art, his 94 throttle body is different than your 97 throttle body. Matter of fact, both engines are pretty much different.
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Old 02-04-2014, 11:48 AM   #7
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typical issue of just replacing things without actually knowing if there bad. remove passender side hubcap and should run better.
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