[MTU 50]

About 10 days ago I was coming home from a camping trip and had been driving on the highway for about 2 hours straight at 75MPH when I decided to stop for gas and something to drink. I take care of business come back to my car only to have it not start. WTF!? I try it again and notice when I turn the key the fuel pump is not coming on, so I immediately check the inertia switch in the trunk even though I know thats not the problem and sure enough its fine. For the next hour and a half I try starting the car from time to time and still the fuel pump is not priming, so I call for a ride home because I'm 2.5 hours away and prepare to leave the car at a service shop (nothing is open because its 4 o'clock on a Sunday).

Go back to my car and try to start it one more time and she fires up. I give some gas so it doesn't stall, call and cancel my ride and make it home without a problem.

I know this sounds like a fuel pump issue, however, since I had a new one put on a year and a half ago because of the same problem, I figure it should still be good. When I had the problem the first time a friend of my grandma who is a mechanic at a chevy dealer checked out the car. He borrowed a friends ignition module and tried that, but it was not the problem. He found a burnt wire under the dash and replaced the bad fuel pump with a new one. I don't think the module is bad now, because since I've had it home it has started although lately it takes a couple of tries in the morning.

Is this a fuel pump relay issue? NOTE: the car is not shutting off at highway speeds or anything? Once I get it going and it warms up it is fine.

So it was running okay for a few days until it did the dame thing when I was at my aunt's house. I couldn't hear the pump priming, so I tried disconnecting the battery for 15 minutes and then reconnecting it. After doing this it fired up. Then this past few days it has been hard starting in the morning. I have to try a few times.

A couple of side notes: ( I know this topic is long enough already)

For the past 2 weeks prior to the camping trip the car would start fine, however, when the idle dropped down after startup the RPM's would drop and it would stall, but fire back up again.

The fuel pump is 1.5 years old like I said earlier, and I replaced the starter 2 months ago.

I also replaced my fuel filter before I went on the trip, but I really don't think that would hurt anything. Yes, I installed it in the right direction and it is the right part number.

Is the newer fuel pump shot? Could another wire have heated up on the long trip and shorted out? Relay switch? Computer?

I would really like to have a car that starts reliably and won't leave me stranded so any help or ideas are welcomed. Thanks Jeff


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1991 GT, AOD, Moroso Cold Air, 3.73s, Pulleys, 3-chamber(the left one fell off-NO time+No Money=College), FMS c-springs, and KYBs