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**Todd68Chevy** · 11-25-2011, 07:50 AM

I know we have a Snap-on Vantage that the tech. uses but I am not sure if he uses anything else. I will check with him on that.

I agree that a vacuum leak ussually causes a high idle but we have had several Ford engines with intake gaskets leaking and no high idle just lean codes. I am not sure what the IAC counts are. I will need to check with the tech. on that.

I know he said he checked the connector at the pcm and said it was clean with no corrosion but I will recheck with him about wetness.

I will also need to check with him on the CKP and CMP waveforms.

We were thinking possible PCM issue but just could not come up with anything that confirmed it. We are members of Identifix but it has not been any help. I will need to check out www.iatn.net I have not been on there before.

THANKS 68C15 for your time and all the great information and suggestions.

11-25-2011, 07:50 AM	#3
Todd68Chevy Senior Member Join Date: Oct 2009 Location: Shelburn Indiana Posts: 3,975	Re: 2003 Chevy S10 Running Problem I know we have a Snap-on Vantage that the tech. uses but I am not sure if he uses anything else. I will check with him on that. I agree that a vacuum leak ussually causes a high idle but we have had several Ford engines with intake gaskets leaking and no high idle just lean codes. I am not sure what the IAC counts are. I will need to check with the tech. on that. I know he said he checked the connector at the pcm and said it was clean with no corrosion but I will recheck with him about wetness. I will also need to check with him on the CKP and CMP waveforms. We were thinking possible PCM issue but just could not come up with anything that confirmed it. We are members of Identifix but it has not been any help. I will need to check out www.iatn.net I have not been on there before. THANKS 68C15 for your time and all the great information and suggestions. __________________ Note: All parts I have for sale are also for sale locally. I currently own: 1940 Chevy Fire truck (project), 1946 Chevy truck (project), 1946 Chevy 1 Ton pick up, 1953 Chevy school bus (storage area), 1968 Chevy C10 (I have drove for 26 years), 1994 Chevy C2500 (daily driver), 2005 GMC crew cab K2500 (parts hauler) and more trucks for parts.