this vehicle runs good when cold. when it gets up to 180 it starts to run bad.

we have already changed the temp sensor twice. we even did a fuel pressure test. do you think that it could be the computer.

What are the codes NOW?

could it be the main computer temp sensor. are there 2 sensors on this type of vehicle. if so where is the one for the computer temp sensor

yes it is a 4.3L we have changed that also. both of those are brand new.

where did you buy part,dealer or rebuilt aftermarket?

NAPA at a dealer

napa at dealer, explain its one or the other. try this run car for approx 5 mins then shut off. on top of the intake manifold there is a 2" black plug remove it and see if the intake is full of fuel. if so you have a poss defective spider

we have done that. it only starts running bad when it starts to get warm. do you think that it could be the main computer since everything else is done and new. the other thing that we were told is that the main wiring harness. runs fine until 180 then it floods it self out.