94 del sol starts immed stalls
I have a stalling issue with my 1994 del sol Si, manual transmission.
When I initially start it, especially first thing in the morning it starts right up and then stalls within a few seconds. It will then start again and again stall. If I rev the engine, I can keep it from stalling. If I drive the car, it will usually not stall. After doing this it will then not stall when at idle again.
I had a separate (my belief) problem a couple months ago where the car would cut out while driving. One minute I'm in gear running about 45 mph and the next minute the car was not running. It would always restart. I replaced the coil and the problem was eliminated. Then about one month later it started happening again, so I replaced the coil and the igniter. It was shortly after this that I started having starting issues when cold, but no more running issues. Now I am having both issues.
When I first insert the key and begin turning I do see the CEL come on and go off, but I do not hear any clicks. I also can not hear the fuel pump prime. I checked the fuel pressure today and after turning the key to position II, the pressure not surprisingly was zero. I then started the car, it ran for a few seconds and stalled. While running the pressure increased to 25 psi until right before it stalled whereby it dropped to zero. I then restarted it, revved it and the pressure increased to 45 psi. Then, I shut it off all the way down. The next time I turned the key I could hear it priming.
1) Is this definitely just a fuel pump issue, the pump relay or both?
2) If the fuel pump is bad, why would it run at all, especially at higher RPM?
3) Is this problem related to my running-stall problem?
Any thoughts or suggestions would be most appreciated.