starting issue

[shocar]

Ok, this is what the symptom are. 94 mtx, stalled at highway speeds. I have had this happen before and it was the Crank sensor. This time is different. I have the car towed after it sat for an hour( I was thinking it was heat related) So I tow it home, and it starts fine. It ran it for a couple of minutes and shut it down and now try it again and it won't start!! I noticed the ICRM is making a buzzy sound so I am thinking that it is the problem, Replace it and nope, the car wont start, just turns over and won't hit. Now I did a few things like open the glove box and jiggle the computer, jiggle the spark plug wires on the coil pack but nothing else and the car starts . I run it for 20-30 seconds and shut it off and it starts fine. I do this about 5 times and it starts. So now I am thinking I have it fixed. A couple of minutes later, I go to start the car, the buzzing of the ICRM is back and the car won't strart. Where do I go from here.

 

[shoon]

If your alternator is pumping out AC, it will make your relays buzz. A loose ground could also do that. Check all grounds under the hood,
-left front fender apron (behind airbox)
-right front fender apron (behind battery)
-Surge tank ground (DIS)

Also measure the voltage coming off your battery terminals while running.

 

[shocar]

I will check it first thing Sunday and let you know, THANKS!

 

[shocar]

Found the problem. There are 2 black wires that are grounded together on the front right side strut tower. The wires had become corroded enough to loose the ground. I found it because with the car running, if you moved the wire connector the car would sputter and stall. So if anyone experiences driving along at high ways speeds and the car completely stalls on you. Check the ground here. The first thing I noticed was the ICRM buzzing when I tried the start the car and the car would turn over but never hit.