Was driving my 89 302 around yesterday and as I was coming home, it started to stall at idle. Would happen randomly, but the idle would get so low it would just shut off. It would crank back up immediately and run but sometimes it would stall three or four times in a row without me giving it any gas. I pulled over to check under the hood and while I was looking with it idling, it stalled again. Went into a store for a few minutes and when I came back out and made the last 15 min trip home it did ok.

I've replaced the fuel pressure regulator and ignition module within the year or two, and the fuel filter is probably only 3 or 4 years old. Thoughts?

 

Idle air control, throttle position sensor, fuel pressure. First 3 things that come to mind.

 

Agree with ^.

To test the IAC just unplug it, if that fixes the issue then you've located your problem.

TPS should be .9-.97v closed throtlle and 5v WOT, with steady/smooth increase while opening


I would also check for leaks in the small diameter vac lines, use a vacuum gauge.