Question about 1984 Porsche 944

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Hi my name is james i have a 1984 porsche 944 i have power at the coil but no spark i changed the dme relay still nothing i have seen other pepole right that the tack should jump when turning over but mine car doesent i just pursched the car not all that long ago i could realy use ur help do you think it could be the crank sensors thanks james

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  • Porsche Master
  • 3,640 Answers

Check crank sensor, this may be your problem. if it is bad it will not send correct info to pcm.

Posted on Aug 25, 2010

Testimonial: "thank you im going to buy 2 new sensors and see what happens but first i will try coil thanks again "

  • carl Aug 25, 2010

    also check the coils out, if crank sensor is ok! get a used coil if need be from a junk yard to see if this is it. also check wiring to crank sensor.

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1 Answer

Why do i not have a spark coming ot of the coil?


HI THERE MOST LIKELY YOU HAVE TO REPLACE THE DME RELAY

PART NUMBER
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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

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1094 944 porsche cranks but wont fire. fuel pump has no power to it. i changed the ignition. still nothing. could it be the factory alarm.please help.


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Jun 09, 2009 | 1984 Porsche 944

2 Answers

No spark, no start


This is an easy one! :-) You have a bad solder joint in the DME relay, it controls power to the injectors and coil. Replace the relay or have a talented person resolder the pc board inside it. Probably best to replace.
Dave

Dec 07, 2008 | 1984 Porsche 944

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