Also be stumped the Firestone service center tech guy. My brother towed me home on a strap today.
This is the story: It was running fine at the time I parked it to R&R the front suspension, steering rack, clutch and flywheel, CV joints, and shifter bushings. I also pulled out the old stereo for replacement.
When I tried to start it fumes were being pumped out the IAC valve tube as if either the spark was early or cam timing changed.
Checked the compression, approx 1: 85 2:115 3:80 4:120 dropped some oil into the low cylinders and the numbers jumped into the 120 psi range.
Pulled the timing covers to double check the cam belt that I replaced last summer, the notches were on the mark.
Replaced the crankshaft position sensor, no start.
Swapped the IAC and ECM with junkyard parts I had, no effect.
Replaced the distributor with a tested unit from eBay, no start.
Towed it to Firestone.
They insisted the plug wires and spark plugs were bad, changed them, no start.
Checked ignition timing with a light, said it was on the money.
Changed the distributor with a new unit, no start.
The service advisor said it was the ECM and they don't do those, take the car back.
Bought a reflashed and tested ECM, put it in, no start.
Towed it home.
Any ideas guys?
Edit:. Also swapped out the TPS, MAP sensor, and tested the diaphragm on the EGR.
Last edited by IMSA_Racing_Fan; 04/04/20 10:03 PM.