86 NA 944 driving me nuts

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Joeybabe - 26 Mar 2004 09:10 GMT

Have 86 NA 944 bought new.

Just replaced $5000 in parts and labor.

When I drive it and come back to it a few hours later or sometimes sooner It
won't start.

No spark............ Later it will start.

Replaced DME, sensor for crank.

Anyone have a good mechanic in NJ or NY.

Preferably in the Monmouth NJ area.

Thanks;

Joe P

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ApogeeEng - 26 Mar 2004 14:13 GMT

Try jiggling the wiring harness going to the DME (passenger footwell). They are
known to fail. Sounds like you have an intermittent.

Larry
'86 944 NA
'87 944S

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D Corley - 26 Mar 2004 15:52 GMT

have you replaced the DME relay ??

>Have 86 NA 944 bought new.
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william_b_noble - 27 Mar 2004 09:03 GMT

dme relay won't prevent spark

> have you replaced the DME relay ??
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> >Joe P

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Mike Merod - 28 Mar 2004 15:03 GMT

Check the low voltage side of the coil with someone cranking the engine.
I believe the side attached to the DME should go between ground and open,
but I'm not sure. The other side should be at 12V.
If the DME is sending the proper signals, I'd replace the coil or look
carefully at the distributor cap.

Also my 83 944 has two sensors for the crank. I believe some later models
have only one sensor, but you should double check.

> Have 86 NA 944 bought new.
>
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> Joe P

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