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low idle speed, about 6/7,000 rpm. scan tool?

All Forums » Corvette C4 Forum » low idle speed, about 6/7,000 rpm. scan tool?

renegade664
7/31/2007 3:39:24 PM
Hey fellas! before i ask my question, i just want to thank everyone for helping me with my clutch. anywho, my 89 is idling pretty low, about 6 to 7ooo rpm. it used to idle at 8 but now its acting up. my service engine soon light has been on for quite a while now and i was wondering what scan tool will pull codes.

another thing, the first start of the day it fires right up, but after its the slightest bit warmed up it takes a couple revolutions to start. i smell fuel too. i have a feeling the two problems are related. thanks so much for your help, joe
LeesVette
8/1/2007 5:46:49 AM
Fuel injectors.  Ohm out fuel injectors and check fuel pressure.  AutoZone will scan your car for free.
cwb
8/1/2007 10:24:32 AM
quote:

ORIGINAL: LeesVette

Fuel injectors.  Ohm out fuel injectors and check fuel pressure.  AutoZone will scan your car for free.

 
I'm agreein' here there, r'gade... Higher rev's from a lean fire, in turn, from weak injector pintle springs. Ever notice black burn (exhaust) after startin' a COLD motor, which goes away in a moment? Dead giveaway for leaky injectors.
 
You can trip the codes yourself; search a few posts here for the procedure. You need a paper clip, or some needle nose pliers...
renegade664
8/2/2007 10:13:50 AM
autozone huh? i had a feeling it was the fuel injectors. how do those things come out? i've taken a look at them and wasn't sure if the inbtake mainfold needs to come off.... i ment for those rpms to be hundreds no thousands but i guess you guys realized that. thanks for your help ill keep you posted.
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