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Registered
Join Date: Mar 2006
Location: Waterloo, ON, Up North
Posts: 287
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No start or high idle - Temp Sensor
With the temperature sensor plugged into its mate on the block, the motor wont start. I can crank and crank and it'll chug here and there but just wont seem to catch. Playin with the throttle helps, but it'll quickly idle down to a shudder and die.
With the temp sensor unplugged, it'll turn over first crank and instantly rev to 3000 rpm where it'll idle forever. The throttle is responsive at this point, but really slow to kick in. Bizarre, I know. Doctors, grab your scalpels. Its time to diagnose.
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'86 Porsche 944, Guards Red Nancy is currently [going in for the final 'once over' this week..] AFJuvat - "Thou art affirmed: Go forth and inject fuel my son." LOL |
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09-20-2006, 06:59 PM
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Registered
Join Date: Jul 2001
Location: Edmonton, Alberta, Canada
Posts: 4,530
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The sensor plug is shorted. (more than likely corroded at the plug)
Put a meter on the leads on the plug to test. The wires shorted = ultra rich. The dme thinks its freezing out and tries to richen up the mixture.
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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09-20-2006, 07:51 PM
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Certified Rennwerker
Join Date: Oct 2002
Location: Kansas
Posts: 1,906
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And I have a new one you can snag...email if you want it.
Dal
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PCA " I've been everywhere, done everything......just can't remember any of it!" 
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09-21-2006, 12:00 AM
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Registered
Join Date: Mar 2006
Location: Waterloo, ON, Up North
Posts: 287
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The block is from an '83...everything attached to the block is from my '86. Uses the same size plugin as everything else on the wiring harness. Perhaps theres a difference in calculations by the DME as its looking to measure block temp and not the water temp, right?
__________________
'86 Porsche 944, Guards Red Nancy is currently [going in for the final 'once over' this week..] AFJuvat - "Thou art affirmed: Go forth and inject fuel my son." LOL |
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09-21-2006, 07:00 AM
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Registered
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The DME temp sensor is the same for all 944's.
The gauge temp sender is different. Use the larger of the two pins on the gauge connector for the single pin on the early gauge temp sender.
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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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09-21-2006, 10:27 AM
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1983 Porsche 944 2.5 liter
