Originally Posted by
THE BLUE HEAP
Thanks for your quick response Franklin2...
I'm at my wits end, I CAN NOT find this annoying hessitation/surging problem I've been trying to diagnose I just changed the EVP Sensor today with no change nearly all of my sensors are new minus the knock sensor...
Vacuum is at a steady 16 hg., I can duplicate the problem if I idle it in park for 20 minutes with the high beams on, & the blower fan on high... My mechanic friend seems to think it's the main wire harness, becuase when the weather is cold it does'nt give me allot of problems, but at over $500.00 for the harness it's a big gamble....
We all seem to have the same problems TPS, EGR, O2 Sensor, Etc. but what ever I do DOES'NT solves the problem...
Any thoughts?
Thanks again
Sounds like a bad ground problem. Had amost same problem with my 84 after I put on EFI! These ECU's are picky with grounding and will cause all kinds of wierd problems. WIth high beams on and blower full speed, there's alot of current flowing and that can cause a ground point to heat up and then fun begins!
