Car idles funny, when cold - Third Generation F-Body Message Boards

91chevyZ · 10-01-2001, 09:04 PM

I Have A 91 Camaro Z-28 with a 305 TPI and when I first start it up, it idles
with a lope(miss). After about 15 min of driving(engine warms up) it smooths out, every once in awhile it will have a little spurt of this problem, when its warm to, but not often. A regular tune up has been done spark plugs and wires, cap and rotor, air filters, and pcv valve. The car has 62,700 org miles, a compression test was also done
and was ok. Any suggestion

formula87-350 · 10-02-2001, 12:41 PM

1. Temperature sensor might be bad. ECM thinks it's warm when it's actually cold.
2. Fuel pressure might me not high enough.

IROCZ89 · 10-02-2001, 01:04 PM

Did you time it after the tune up?

Phil

Shadyredeyes · 09-13-2009, 12:46 PM

My 88 S/c does the same thing, have been told to check the E.G.R. Valve. Might try that.