Question about 1984 Porsche 944

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I have an 84 Porsche 944....Can't get spark to the coil? Any suggestions to find out what else could be causing this? Thanks John

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Crank sensors located back of motor there are two of them on top

Posted on Jun 01, 2010

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84 porsche 944 replaced new spark plugs and wires,cap,rotor,coil,emc,DME relay,fuel pump, reference speed sensors, new battery, and still no start. Any suggestions is what to do next?


Not much left unchanged is there and no doubt you have done compression testing on all 4 cylinders as well. (If not you need to). I assume it is cranking over normally with the starter motor but not firing.

I would try one of the Porsche Owners Forums for this as one of the other 944 owners there should be able to help..... Like this one..................

Porsche 924 944 968 Technical Forum Pelican Parts Technical BBS

Jan 24, 2016 | Porsche Cars & Trucks

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How do you fix a no spark problem on a 84 porsche 944


First thing to check, pull the distributor cap off and make sure the rotor is still screwed to the shaft, they had a bad habit of getting loose, it also gives you a chance to make sure the cam is turning. Next I'd just replace the DME relay because they commonly caused this problem, then check the output of the reference sensors with an analog voltmeter on the lowest scale - you're looking for 2v blips, also confirm 12v at the coil with the ignition on. If you have all that you may need to pull the DME out and re-solder the connections from the big power transistor to the pc board, they crack over time.

Jan 19, 2016 | Porsche Cars & Trucks

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No spark on 84 944 porsche new plugs wires cap rotor ignition coil dme tested good havnt checked dme relay just gonna replace it found many others have same problem and it turns out to be crankshaft sensor...


It is not hard to change. They are usually located on the bottom back of the engine. I have had cars that didn't spark and the crank solved everything. Others, it didn't work. Don't know why, guess it all depends on the computer reading it all. Your ECM controls all the ignition comonents and timing. Have you tried putting in another? Sometimes, if it doesn't read the crank, it will shut down the spark. Some do, some don't. Can't be 100% sure but it has worked before. I usually tell people to go to a junkyard when they have no spark and have been trying to fix it for some time. Get all the parts you need for cheap. A bad cam sensor can cause no spark and the distributor itself.

Feb 10, 2011 | 1984 Porsche 944

2 Answers

'84 porsche 944 cranks, chokes and dies


check your air filter sounds like it is starved for air possibly

Apr 06, 2010 | 1984 Porsche 944

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