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John_AZ John_AZ is offline
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Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
Quote:
Originally Posted by joshl1978 View Post
Is it possible the DME could causing me coil problems? any tests for the dme any repairs ive heard of soldering joints and such also can my early 85 be upgraded to a late dme and afm? porsche FAQ says you can
joshl1978,

I read a couple of your previous posts and it seems to have started with the removal of the DME.


"85/1 start then dies like clockwork" -joshl1978

ANY FEEDBACK PLEASE. My 944 starts runs for about 15-20 secs then dies, if i let it sit a few minutes it will start then die the exact same way like clockwork as if the fuel supply or spark is abruptly cutoff. I replaced the dme relay to no avail. I have had the car for about a year without any problems until now.

about 6 months ago i removed the dme and adjusted the air fuel mixture no problem. However, when i put the dme back in there is round part attached by a wire to the dme harness that i didnt bolt back in the same way i think i just rested it up there anyway the day i began having problems this part fell from under the dash and was hanging by its wire. I have no idea what this thing is or if it could be related to my problem.

You need to have your DME checked. You can call www.944ecology.com and he will test it for you. Or the best DME service is Systems Consulting. Here is a web site and one page shows typical DME failure modes.

http://www.systemsc.com/failuremodes.htm

The web site has other DME information.

Here is a link on how to resolder the DME:
http://forums.rennlist.com/rennforums/924-931-944-951-968-forum/310806-early-dme-repair-write-up-with-pics.html?referrerid=20449

GL
John_AZ
1988 924S + 1987 924S
Old 06-10-2009, 09:55 PM
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