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max29a's Avatar
Join Date: Jul 2004
Location: Santa Barbara, CA
Posts: 90
well it finally died

Hello again,

As you may recall my car has been having a fair bit of trouble. It dies while idling, or under acceleration, about one to five times a day now. When I say die, I mean that I loose power from the engine, but electricity, stereo, etc stay on. Normally I pop it out of gear and wait for the ! light to come on signaling that its dead, and then drop the clutch and it often fires back up. Occaisonally I have to wait by the side of the road for 5-10 mins before I crank it over and it starts up again. This is ALWAYS accompanied by something in the relay/fuse box clicking. Sometimes its exactly one click when it dies, and exactly when click when it comes back, but more often it clicks 10-30 times a second for a bit.

I have replaced DME relay, fuel filter, TPS, and ignition coil most recently. A german (but not porsche) shop has looked at it and were unable to find anything.

Last night I think whatever it is finally died which I think is going to turn out to be a good thing because now I can find out what is wrong. It will still crank just fine, but it never starts up.

I am a newbie when it comes to working on cars, but I am thinking it may be the fuel pump as when I give it power but dont crank it I cannot hear anything, and I think I should be able to hear the fuel pump running, correct?

Whats the next step? take the fuel pump out and test it? leave it in and test it? Please help.

I will be gone on work and vacation for a month starting tomorrow so this will have to wait, but I hope to read your replies while I am gone. Also, I did check the fuel pump fuse and that looked fine.

1985.5 944 NA - 270k miles!
2001 suzuki sv650 - 37k miles

oil change done at 270k
timing belt done at 240k
Old 02-15-2005, 08:07 AM
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SoCal Driver's Avatar
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Check the sensors. Could be a broken casing and wire and/or improper clearance to the flywheel.
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 02-15-2005, 09:32 AM
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FLA944's Avatar
Join Date: Oct 2002
Location: Palm Bay, Florida
Posts: 317
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Do not remove the fuel pump. Hook a dmm to the terminals at the pump and have a buddy crank her and assure you are getting voltage to the pump. (make sure is a good buddy gearshift in neutral and parking brake on)

Pick up a Bosch style noid light at discount auto parts and check for pulse getting to the injectors.

can be the ignition switch also giving all the random shutdowns and now dead and the clicking of the fuel pump relay. I am sure you cleaned the ground connections to the firewall.

'83 944 "Guards Red"
New Everything (seems like)
16" 968 Wheels
has never left garage (yet)
Old 02-15-2005, 09:49 AM
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Join Date: May 2003
Location: Lincoln, Nebraska
Posts: 5,072
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If you hook up wires directly to the pump, be sure that you hook the wire up AT the pump and connect it TO the battery (or wherever you're planning on getting power from)... You don't want sparks flying that close to your gas tank.

You can also run a jumper past one of the fuses and see if it gets any juice. Also, take out and look closely at your fuses again... they can be broken and it's hard to tell. I had a blown fuse and didn't have access to an OEM, so I took an inline fuse, added some spades, and made it home.

Would fuel pressure regulator or anything goofy like that cause his problem?

1983 944 - Sable Brown Metallic / Saratoga / LSD : IceShark Light Kit
Old 02-15-2005, 10:01 AM
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