Check it out..I have been having some running issues and in monitoring the TP MAp and MAF etc. they would all go haywire and engine would run bad. But after running for awhile it would come around and act right.. So I got to looking around and found that a blown check valve that I had replaced a while ago had actually blown hot exhaust onto the wiring harness on the pass side and melted insulation off of about a dozen wires.Just a thought to those who have had running issues.. Check the wiring harness from the engine control module to the top engine for damaged. I could post pictures, but what I found was beyond belief and the engine still ran.. (Almost).

 

Good advice to check for melted wire insulation affecting engine performance.

 

I have recently decided to take some of the daily driving load off my blazer, and purchased another ride, just to give it a break. At 370000 miles and everything up to par I felt I wanted to get some extended years by letting it rest some.. Well it hasn't liked it and still wants to be driven everyday. Call it what you like, but my blazer seems to be a bit jealous.