Mustang engine shut's off while driving

Mixitup · 09-28-2005, 04:40 PM

I've got a 91' Mustang LX 5.0 and the engine just started shutting off while driving one day. I was able to get it started once but then it did it again and had to have it towed. Since then we have replaced the Starter Solenoid, Ignition Coil, Ignition Control Modle, and before all this happen we put in a new Starter, Alternator, and Battery.

After we put in the Starter Solenoid the car started right up and ran fine for a day or so then all of a sudden last night it shut off again while in a parking lot just idleing. At this point we are stumped as to what is going on so if you have any ideas they are greatly appreciated.

HiFlow5 0 · 09-29-2005, 09:13 AM

Does it always start right back up, or does it take a while of sitting before you are able to start it up again?

I was going to say check the TFI module on the side of the dizzy, but it looks like you already did that.

Is your fuel pump priming when you turn thte key?

Mixitup · 09-29-2005, 03:55 PM

It has started back up a few times after sitting but now it won't start again.

We replaced the TFI module and that didn't seem to fix it.

And the fuel pump is priming when the key is turned.

HiFlow5 0 · 09-29-2005, 06:40 PM

First thing I would do is run codes and see if the cpmuter is picking up anything out of the norm. I would also check for a bad engine ground.

ericmm1 · 10-04-2005, 12:42 PM

I have the same problem on my 89 5.0 just started worse on warmer days will always start back up after about 20 to 30 sec. go about a block die out again. just started searching for cause

Mixitup · 10-04-2005, 08:14 PM

Finally found the problem and got it all fixed.

Turn's out there was 2 bad ground's, the engine ground was coming apart, and the ground coming off the MSD box was not too happy either, replaced both and the car run's great now.

Thanks for all your help!

HiFlow5 0 · 10-05-2005, 10:46 PM

So it was a ground? I'm so smart

.

Glad you got it fixed!

Mixitup · 10-05-2005, 10:50 PM

Yep all fixed thank's to your advice and knowledge!

Now if I could only figure out a way to fix the mpg cause gas prices here in CA suck =(

HiFlow5 0 · 10-05-2005, 10:51 PM

Sell it and buy a Hybrid. lol

ericmm1 · 04-17-2006, 10:28 AM

I have a 89 Mustang GT shuts off while driving like it is starving for gas, only on warm days 70 or better will always start back up in about 15 sec go about a block and die again is not running hot. Neeeed help

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