Tired of throwing money at this problem!!!!

[The Lure Washer]

I have this intermittant stalling issue that has got me stumped! I have a 90 renix with a 94 HO motor in it. The issue Im having is that when I slow down and reaccelerate she stalls. Ive already gone through grounds and cleaned them thoroughly. Ive thrown all kinds of money and replace just about every sensor I can think of. This happened a few month ago where she would start to hesitate and then I'd boost the RPMs and she'd stay running untill she would die and not restart. So I replaced the CPS. Well she would run ok for a couple of months. So last week I went to walmart one night and I came out and she wouldnt start up again. After about an hour she started and I backed out of the parking space and it died, restarted and it died again. Finally she died and wouldnt restart. So I had it towed home. I found that I didnt have any spark so I replaced the CPS again. The CPS that was in there was only 2 months old. Replaced it and she started right up. Two days later I was driving to the store and she died again. Got out and for some reason I poured a bottle of cold water on the Coil. She started right back up. Drove it to where I needed to go. Then drove it home. Next day I replaced the coil. And I also noticed that the plug in the ICM that gets the ECU/CPS signal was frayed and there were broken strands. Replaced that and she ran for a good week and a half but I noticed she was idling a bit low. Idle rpm any where from 500- 900rpm and the minute I put it in gear she drops to 300-500rpm.
That brings us to today. Was driving to work and I slowed down for traffic and she stalled. I tried to restart and she was dead in the water. She wouldnt even crank. Got out and disconnected the CPS and reconnected it pushed the connector in the ICM i replaced and I also pulled the Latch relay to look at. Plug it back in and she started but ran very rich for about 5 seconds with black smoke coming out of the tail pipe. Then Cleared up. Got to work and it sat all afternoon and went i went home she started and ran. Then when I got stuck at a light it turned green I stepped on the gas and she kinda choked like she was gonna stall the she went. She ran fine Until I had to slow down for another light.
Im really stumped with this and Im tired of dropping money. What To check next? How can I check my latch relay? Could a bad map sensor cause this problem? Thats the only thing I havent replaced. SOMEONE HELP!!!! THIS IS MY DAILY DRIVER!!!!!

Thanks ~Matt

 

[The Lure Washer]

Could a bad ignition switch cause my car to stall?

 

[tugalo]

Look over the wiring and the connector to the CPS real good. the wire sometimes gets burnt as it hits the back of the exhaust manifold, or you could have a loose sloppy pin or corrosion inside the connector. Did you check the MAP sensor?

 

[The Lure Washer]

I have not checked the map sensor yet. Would that cause it to stall though?

 

[winterbeater]

The really weird thing is when it wouldn't even crank. Do you have a built in voltmeter? Are you POSITIVE that your battery is good? If no built in alternator, check for 12.5 volts with a hand held or take battery in to auto parts chain for a test. IIRC Renix is sensitive to voltage and can start but not run right sometimes if voltage is low.

 

[The Lure Washer]

yeah the battery is new with in the last 4 months. My battery voltage sits right under 14 volts and floats up and down in that area but never goes over 14.