Quote:
Originally Posted by aston@ultrasw.c
I had an intermittent hesitation under load on my 86 3.2.
I replaced all same crap and more 
It ended up being the fuel injection wiring harness!
The factory folded the harness back on itself and stuffed it into a clamp, over the years the insulation broke down.
At idle, reach deep into the engine bay and pull/push the harness around, if the engine stumbles - you found it!
BTW the most conclusive vacuum leak test was a smoke test. I tried them all.
Good luck |
I also had an intermittent misfire under WOT that felt a bit like a rev limiter.
After going through all the same stuff (and lots more), it turned out to be a bad connection at one of the pins on the 4 pin connector for the fuel injector harness, located on the firewall. Only found after opening the connectors and finding one pin loose in the socket. Cleaned and spread the pins, problem was solved. Now the connector has zip ties to keep it tight together as well.
So don't discount an electrical problem...
Only found it when