Pags993

Gents,

Ran into an issue today. Had the car out running a few errands around town and at third location (driveway on slight incline) car would not start. Cranking sounded really healthy but just wouldnt fire up! after the third try i just left it for fear of messing something up. Any ideas? Car has been flawless since i picked it up except for this incident Still learning all the details of my new to me ride. Moisture in cap and rotor? DME relay problem?

Looking for somer opinions before i get it towed top the local indy

Ish993

Sounds like textbook DME

Pags993

Just my luck!!! i recently placed a Pelican order and was going to get a few to keep as spares after the threads I have read on this board. Of course i decided not to at the last minute and bam

timothymoffat

Try unplugging/replugging DME. Probably won't help but it won't hurt giving it a shot.

Mike J

Or give it a whack!

Mister C

If you are handy with a soldering iron you might attempt a repair.

Here is a good link with pics courtesy of IXLR8:

https://rennlist.com/forums/993-foru...+repair+solder

trickydisco

+1 on mike's comment. Take out the DME, give it a few good knocks on the pavement , replace, try again.
A temporary patch that has worked for a few people.

billapo

I had a similar problem. Car would start after 15 minutes. It was the Cold Crank Sensor.

blindspot79

I had a similar problem. Sounded like it was turning over, and heard the DME relay buzzing. All and sundry thought it was the DME relay. It turned out to be a loose earth connection to the ECU.

Strongly suggest checking earth connections before buying stuff or calling breakdown services.

Regards,

TMc993

Try this:

• Make a 3-wire jumper (Three ends joined together and three separate).
• Pull the DME relay and use the jumper to connect DME relay terminals 30, 87, and 87B.
• Try to start the car.
• If the car starts, it was the DME relay.
• Do not leave the jumper in place...This is for testing only.

Good luck,
Terry

Pags993

A BIG THANK YOU! Removed the DME knocked it against asphalt and bingo

2 new one's on the way from Pelican. OEM dealer up here wanted $109.75 each,
beat it!

Bought 2 new DME's and one AC / Cooler relay for less than they wanted for the one DME up here

You guys rock!

JimPA

I had this problem and assumed it was the DME (still the original one). I got two new DMEs so I'd have a spare. That wasn't the solution.

In my case, the crankshaft position sensor's electrical signal varied from weak to almost non-existent. When it was really weak, there wasn't enough juice to allow the car to fire. My indie diagnosed the issue and replaced the part.

Pags993

Can you replace the CP sensor yourself? Sounds like another part that fails frequently.

JimPA

It doesn't look like replacing the part should be that difficult. As for failure rate, my car's almost 15 years old so that doesn't strike me as frequent.

I dropped the car at the indie and went out of town. They duplicated the problem, checked various electrical items and used a scope to confirm the failing reference sensor. When they called with the results, I told them to go ahead. The bill for the part was almost double the cost listed on Pelican's site. Labor was $320. I suspect most of that was diagnostic time, not for removal and reinstallation of the part.

Mike J

Yeah, a shop has got to make some money and cover their costs, which these days is a real challenge. Is that about 4 hrs of work (i.e. what is their hourly rate?)

Cheers,

Mike