F40LM

Yep my '86 na finally let me down guys. It keeps shutting off like I have no throttle. After waiting a minute it fires right back up makes it say another mile then shuts off again. Engine runs but no throttle. Have swapped out ignition relay x with spare same story.

Any advice welcome guys.

Michael

Rogue_Ant

Fuel pump / DME relay.

gregeast

I'm a bit confused, the motor is still running but when you push the gas pedal nothing happens or the motors dies completely?

F40LM

Can the relay be jumped? Sitting in parking lot letting engine run been running for a couple of minute now no shut off. Maybe I could idle the 60 miles home.....lol

F40LM

No engines runs as in 'deisels' to a stop then no joy. After about a minute fires right back up.

Rogue_Ant

Yes, three male spade terminals and a little bit of wire in a 'Y':

http://www.clarks-garage.com/shop-manual/fuel-05.htm

Yep, sounds like a fuel pump...

F40LM

Thanks man. Have tried both the three way jumper and the paper clip trick on Clark's and same story. Looks like I may have to admit defeat. Gonna give it time to completely cool down and then try again.

Anyone have a beer? Oh wait there's a Exxon across the street. No worries hell could be back in Iraq with a broke down Hummer.

Rogue_Ant

It does sound like a fuel pump, or the filter is extremely clogged...
I would also loosen the fuel fill cap, just in-case there is a vacuum in the tank making it harder for the fuel pump (I've seen this happen before, though not on a 944/951).
Another possibility is the ignition coil is overheating.

Been there mate. Breaking down state-side is much more preferable

F40LM

I don't think it could be a bad fuel pump I hear it run when I jump the leads. Replaced fuel filter when I put her on the road. That was 14 months ago but I don't think it could be f@&$ that quick.

No doubt I've been in worse places dude. Hey I have a Heineken and listen to Shawn Hanity on my phone. This too shall pass.

Any other ideas guys?

F40LM

Made to a catholic church parking lot. Gotta put the beer down here. Lol

At this rate I should be home by 2am.

catamount

Throttle position sensor? Mine would idle fine but nearly stall as soon as I pressed the gas. Replaced the TPS and all is well.

Homer

I was going to suggest the tps or MAF, bad signal or no signal. Good luck..

Rogue_Ant

Yep, that is the symptoms - the fuel pump works for a short time, then quits... That is fairly normal fuel-pump failure routine.

Keep the jumper in, then drive it - when it dies, see if you still hear the fuel-pump.

ZR8ED

FPR. is my guess. I was able to get the car home after it began to fail, but after that, it would only start and run for a few seconds and die. Touching the gas made it die to....easy to check..

SamGrant951

My AFM was bad causing the car to stumble/not run off idle and it was pretty random. I replaced everything and finally swapping the AFM solved it.