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wjdunham wjdunham is offline
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Join Date: Oct 2016
Location: San Jose, CA
Posts: 1,215
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DME relay question

Did some searching but would take me a lot longer to piece it all together than to just ask for some help... MY 85 Carrera died while out on a drive last night. I found a safe place to pull over and replace the DME relay with my spare, but did not get the car to re-start. Cranks fine, and today I verified that I have spark and injection pulses with my Noid light and timing gun. So that rules out the Motronic DME and the Speed/Reference sensors as the culprits (thankfully!).

So my guess is either a bad spare relay (URO part which I read are suspect) or the fuel pump died. I haven't checked for fuel pressure as I don't have a pressure gauge.

My question is, will I still get spark and fuel pulses with a bad relay? If that URO replacement was bad then it was a very expensive ($160 for my tow home) mistake...

Thanks for any help.

Bill
Old 10-31-2021, 07:21 PM
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