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Registered
Join Date: Mar 2004
Posts: 1
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Car cranks will not start
I recently bought a 87 944. The car has no spark. Compression is ok. Fuel pump runs while Cranking engine. It has power on both coil terminals but is constant ie no pulse. It has power to both sides of the injectors, (strange) but has no pulse. Crank Sensor #1 ohms at 1200 ohms and drops below 1000 when activated. Crank sensor #2 ohms at 920 and seems fixed at that value. any help would be greatly appreciated. Thanks
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03-26-2004, 03:07 PM
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You need to check the voltage the sensors put out. An analog volt meter or an oscilloscope. Both sensors should put out about 2 volts when cranking. The rear (speed) a constant voltage and the front (reference) a pulse per revolution.
I would also check that the rotor didn't come loose or that the HV wire between the coil and the dist cap has pulled loose inside the weather boots.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-26-2004, 03:26 PM
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1983 Porsche 944 2.5 liter
