4.3 v6

Yay, a Jimmy dedicated Forum! I have a 98 Jimmy with 98k original miles. It was misfiring constantly so the engine was torn down and there is a list of parts to replace. The way I look at it, I already have the engine pulled apart down to the block and I am replacing alot of parts, why not...

so i bought a 93 gmc jimmy ran it about 200 miles and when i started to stop it stalled out i started it and it has a bad idol up and down up and down.. so i took it to a machanic and he cleaned the EGR valve out and pit it back in.. so im driving it two days later and same thing happens again...