drfergus

Hi all,

I was getting on to the freeway going from second to third when all of the sudden I lost power and engine died.

I tried everything I could think of jump start, replace the ECU chip with the stock one. It turns over but will not start, and it is getting gas.

Any of you out there every have this happen to you and what did you do to fix it? It seems to be an electrical problem.

Thanks,

Dana Ferguson
Dana.ferguson@cni.net
1985 Porsche 944 N/A

lovemyp-car

when this happened to me (several times) i gave the dme relay a smack or two and it would start, then i immediately drove home, parked her and replaced that relay and haven't had a problem since...

V2Rocket

DME might have gotten nuked, your sparkplugs may not be getting voltage, ignition coil might be bad.

drfergus

Hi,

Thanks for the info. I have ordered a DME/ECU to replace the current one. I am pretty sure this is the problem.... Not a cheap way to find out factory chips are probably the one that should be left in there....

Dana

Jfrahm

The inexpensive DME *relay* is usually the cause of this, did you get one or just the DME/ECU?

This talks about the relay and the jumper you can use to temporarily replace it:
http://www.clarks-garage.com/shop-manual/fuel-05.htm

the jumper wire keeps the fuel pump running all the time so you have to disconnect it when parked.

-Joel.

drfergus

Yep you guys were right it was the DME...

Thanks!!!

Dana

Rock

Real men roll this way for months!

lovemyp-car

^^^i did...then i got tired of it when i broke down twice within a few hours and almost got killed and almost missed a doctors appointment (and what's even worse i almost had to call my MOM to have her come pick me up in her CIVIC!!! AAAAAHHHHHHHH!!!)

drfergus

Hey,

Well dang it thats not it.... I guess I am replacing the coil now.... The same thing happened....

Dana

bendavis2

Just in case it isn't fixed yet, clean your battery terminals and double check that your battery cable is on nice an tight. I had the car die while driving, pulled over, and jiggled the battery cable and it started right back up. Tightened the battery cable bolt and it's been fine since.

drfergus

Replaced the termial clamps, and nope that ism't it either....

Trying the coil next.

Dana

Yabo

Did you replace the actual DME under the floorboard or the DME relay in the fuse box?

drfergus

Hi,

I replaced the ECU under the floor board and the DME relay in the fuse box, the battery terminal clamps. Next is the coil.

Here is the website I have it posted on so you can see a bit more.

http://fergusonranch.kicks-***.net/Porcshe944.htm

Dana

drfergus

Well I replaced the coil and that is not it.....

I wounder if it is the fuel pump?

Dana

KuHL 951

Have you checked the reference/speed sensor connectors at the rear of the intake manifold. They get brittle and crack causing the pins to come loose. Mine backed off coming off the freeway once and it died in place and would just crank but not fire. My son called me and I told him to trying jiggling them. He did this and it started right up again. I put TyRaps on the connections to hold them tight until I repaired them with new connectors.