Runs good cold, bad when warm

Tiny
MATT2M
  • MEMBER
  • 1995 CHEVROLET CAMARO
  • 6 CYL
  • 2WD
  • MANUAL
  • 174,000 MILES
Have a 1995 camaro, 3.4L 5 speed. Idles ok when cold but once warmed up, the car acts as if it has a bad miss. New plugs and wires. 1 new power pack. No error lights on the dash at all.
Do you
have the same problem?
Yes
No
Tuesday, December 28th, 2010 AT 3:22 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Go to this link: http://www.2carpros.com/articles/engine-misfires-or-runs-rough
Was this
answer
helpful?
Yes
No
Tuesday, December 28th, 2010 AT 3:54 PM
Tiny
MATT2M
  • MEMBER
That link was helpful. Im sure it wont hurt to change out a few sensors, however I paid more attention today tot he issue. Started car and it idled fine. When warmed up enough to drive it ran and sounded fine. I got to my 1st location and left the car running. When I came out it was well warm and the idle was poor. As I drove on the car acted as if running on 5 cylenders and had a rough idle. I got home, parked the car to allow to cool down. I came back out 30 min later and the car was still kinda warm. Started the car and had the rough idle. So I went into work and came back out 6 hours later. Started the car and it hummed perfectly. Until it got hot. Acting as if something is expanding/retacting from the heat and allowing a misfire or a vac leak of some kind. I noticed today I am missing 1 bolt to my manifold. Broken off or missing. No loud exahust sound at all. Im stummped.
Was this
answer
helpful?
Yes
No
-1
Tuesday, December 28th, 2010 AT 11:41 PM
Tiny
RASMATAZ
  • MEMBER
Do you have a check engine light and also when was the last tune-up?

Try cleaning the idle air control valve and EGR valve and see what happens
Was this
answer
helpful?
Yes
No
Wednesday, December 29th, 2010 AT 12:42 AM
Tiny
DWAYNEZ288
  • MEMBER
I know im late on this but does this car have a icm?
Was this
answer
helpful?
Yes
No
Tuesday, March 8th, 2011 AT 11:52 PM

Please login or register to post a reply.

Recommended Guides