The check engine light has not come on. But it is an OBD1 system, it is pre-OBDII, so I am not sure what data it might have.
I thought about the Fuel pump, since it is very old. But, it seemed more like a choking problem, because of the retarting improvement when holding the throttle wide open. But, is there an easy way to check the fuel pump preasure, without special tools. And, since the problem comes and goes, can I be sure the test works, if the fuel pump may be fading in and out? After it sits for a while it seems to run again for a while before the problem resurfaces. So, engine temp may also be playing some role, too. Before I figured out I coulsd hold teh throttle wide open and get it to restart, I had to let it cool down for a while before it would start. And then head for home as fast as I could.
I have not found any vacume leaks, as yet. But, I have not check the throttle position sensor or Idle control valve.
Thursday, September 10th, 2020 AT 2:42 PM
(Merged)