Rough Running Z - ZR-1 Net Registry Forums

crjspo23 · 08-22-2012

I posted some history under another thread for Cam Position Sensor, but here is the problem. After no issues for 2 years, the car started missing suddenly about 10 seconds after startup. The SES light came on and was traced to fault code 31 - Cam Position sensor. The sensor was checked and determined not to be the problem, but in the course of suspicion of the common injector problems in 90-92's a couple of bad injectors were found. New Delphi SS injectors were ordered and installed, but upon startup the car still ran as if on 5-6 cylinders and then stalled and wouldn't restart. Fuel pressure was checked and is fine. Spark plugs were pulled and checked and are fine and do not appear to have been flooded with fuel and we do have spark.

Anybody got any other ideas of where to look to find this elusive problem?

08-22-2012	#1
crjspo23 Join Date: Jun 2012 Location: North Carolina Posts: 22	Rough Running Z I posted some history under another thread for Cam Position Sensor, but here is the problem. After no issues for 2 years, the car started missing suddenly about 10 seconds after startup. The SES light came on and was traced to fault code 31 - Cam Position sensor. The sensor was checked and determined not to be the problem, but in the course of suspicion of the common injector problems in 90-92's a couple of bad injectors were found. New Delphi SS injectors were ordered and installed, but upon startup the car still ran as if on 5-6 cylinders and then stalled and wouldn't restart. Fuel pressure was checked and is fine. Spark plugs were pulled and checked and are fine and do not appear to have been flooded with fuel and we do have spark. Anybody got any other ideas of where to look to find this elusive problem? __________________ Charlie 1990 Dark Red ZR-1 formerly owned by Chip Miller