Low Idle Speed

Reply Subscribe

Thread Tools

Search this Thread

12-24-2004, 11:02 AM

#16

85_305

Banned

Join Date: Apr 2004

Location: Holland, NY

Posts: 1,610

Re: Low Idle Speed

Another thing diff. between the Corvette engines and the Camaro engines is that Vettes are 4 bolt mains, and Camaro's are 2 bolt mains.

12-25-2004, 04:53 PM

#17

85irocrebuildtpi

Registered User

Join Date: Dec 2004

Posts: 64

Re: Low Idle Speed

Quote:

Originally Posted by 92RS305#2

my freinds jeep was having a bad idle problem and when he brought it into the shop we found out it had a bad TPS, make sure its getting .45V at closed and close to 5V at WOT. if you can look at it on a scope and make sure it doesn't have any hash on the waveform, if not then a DMM is better than nothing. i'm not sure if our cars can monitor systems like IAC through a scanner but if you can look at one on it it'll tell you how much (in percent) its open. if the solenoid isn't opening it up enough or its sending the wrong signal then you won't get enough air into the cylinder to burn all the fuel. this will make your ECM read rich and lean out the cylinder till it dies. i'd check the TPS first and then look at the IAC second.

i got the same rpm surging problem,

i thought the iac and pintle came together and so it was a total part swap....i thought that was the only way to get it from chevy...

my TPS is .53v so that is the spec there

i am going to a computer for a diag, the computer will tell you where problem is and cost you 50 at a garage you know......i also think a sensor could be wrong telling my computer to fire my cold start injector thus my rpm surge