1987 Chevy Camaro rough idle

TNIOP

MEMBER
1987 CHEVROLET CAMARO
V8
2WD
AUTOMATIC
110,000 MILES

The engine runs smooth when cold and the choke is partially closed but after it has warmed up it runs rough. It does not quit under a load, i.E. In drive but not rolling. But has very rough idle. Recent tune up and all good vac lines. Rebuild 2 years ago with no issues up until now. No trouble lights or check engine lights are on. Is this possible valve adjustment?

4 Replies

JACOBANDNICKOLAS

MECHANIC
108,192 POSTS

Does the engine have a carb or injection? I had an 86 with multi port injection.

LEt me know so I can better help.

Joe

Was this

answer

helpful?

Yes

No

Friday, July 3rd, 2009 AT 7:50 PM

LOUT5369

MECHANIC
217 POSTS

Put a vacuum gage on it, see what reading you have, should be steady 17-22hg, you could have intake leak.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, July 22nd, 2009 AT 11:29 AM

JHUERTA22

MEMBER
15 POSTS

Have you checked the ohm readouts on the fuel injectors. That was what caused my rough idle.

Was this

answer

helpful?

Yes

No

Monday, September 7th, 2009 AT 9:43 PM

LOUT5369

MECHANIC
217 POSTS

Well, due to the fact you have a choke, I think we can rule out injectors. I would put a scanner on it and check the MAP sensor readout, TPS readout, I have had the vacuum hose for the MAP sensor collapse internally causing the map sensor to make the cars mixture not change(run rich or lean)

Was this

answer

helpful?

Yes

No

Tuesday, September 8th, 2009 AT 6:46 AM