liberatedred4

I was just reading your post to see if you tried what I was going to suggest, which states that you did. My sisters 93 S-10 Blazer was having a similar problem. It would start and run fine, but once it got to temp it would shudder and die and would not start untill the vehicle was completley cool. I figured it was a wiring problem, which is not my thing, since it would die once it was at temp. It went to 2 diff. shops and I asked both wether it could be the wiring harness the one said maybe and the other said no way it's the CPI (central port injection). I told my sister we were gonna drive it home as far as it would go before dying and then wait for it to cool and take it the rest of the way. Well a friend of ours came by to take a look at it and I told him my thoughts and so he had us start it and just started moving around wires under the hood, till it died. when I saw it was the wires going into the plenum, I wanted to warn people about the guy who swore it was the CPI. Then I did a few tests to see if it was wires inside or outside the plenum causing it to die. When I opened the plenum the ground wire for the CPI was just hanging there and the crimp inside the clip was wide open . I trimmed the wire back and carfully recrimped the wire inside of the plastic housing clip. Which saved her $100.00 for the new harness. Then it ran great no stalling or shuddering and no dying. Chevy knows the CPI is a bad system thats why they started using the TBI again and why they developed a diff. system.