1991 Chevy Camaro car running rough through certain RPM's

Tiny
CAMAROZ28_91
  • MEMBER
  • 1991 CHEVROLET CAMARO
  • V8
  • 2WD
  • MANUAL
  • 66,000 MILES
My car runs rough between 1300 and 1500 rpm's. It seems to make a clunking noise through that rpm range when slowing down. What could the problem be?
Saturday, June 6th, 2009 AT 12:20 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Has the check engine light come on? Does it make the noise in all gears at that RPM?
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Friday, July 3rd, 2009 AT 7:17 PM
Tiny
CAMAROZ28_91
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No the check engine light has not come on. Yes it does run rough in all gears at that rpm range.
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Wednesday, July 8th, 2009 AT 9:52 AM
Tiny
CAMAROZ28_91
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The clunking noise that was there orginally turned out to be a lug nut that was lose. The car still runs rough through that range
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Wednesday, July 8th, 2009 AT 9:54 AM
Tiny
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I'm glad you found that one before something bad happened. As far as the rough engine, has the car been tuned up reciently? Have you checked for vacuum leaks? It could even have to do with fuel pressure. Have you checked that? DO you need directions for it?
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Wednesday, July 8th, 2009 AT 8:59 PM
Tiny
CAMAROZ28_91
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Yea that wouldn't have been good. My camaro has only had plugs and wires done and an ignition switch replaced. It has been having trouble starting lately, too. I have not checked for vaccum leaks or a possible fuel pressure problem. I went to start it today but it wouldn't even click or try to turn over. When I do get it going I will check both for vaccum leaks and fuel pressure. I'm not a mechanic by any means; what would it cost to have that ckecked out or how easy is it to ckeck myself?
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Monday, July 20th, 2009 AT 10:08 AM
Tiny
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Actually, if you have a volt meter, you can check it yourself. Have a helper turn the key to the start position while you check for 12 volts to the smaller wire going to the starter. If you are getting 12 volts, then chances are the starter is bad. If there is no power to the starter, then move to the starter relay.
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Monday, July 20th, 2009 AT 10:48 AM

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