Z31 misses sometimes

[JeremiahB]

Hey guys

I just got the Z31 to stay running. Replaced the MAf and had no problems, it idles fine. Now I have a new problem. As im driving the car misses. It seems to happen more in the morning compared to any other time of the day. Ill press the gas and hear a little sputter and it wont pick up for a few seconds. Sometimes in the morning I will press the gas and nothing happens just followed by a misfire. Fuel pressure is good, Im getting no codes on the computer, and I just replaced all the spark plugs.

Any idea ..... CHTS

[racepar1]

I would check the TPS. I just had a similar issue on my singlecam and the TPS was the cause. I'm not 100% sure on the Z31's, but on the singlecam's there is a TPS and a closed throttle position switch together in the same sensor. There should be two separate plugs on the sensor though.