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| Registered Join Date: Jun 2009 
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				1985 944 no spark, no tach movement
			 
			Hello, I need some help. I have a no spark, and no tach movement while cranking. I have fuel pressure, and compression is good. By looking at the other threads seems like I have a speed and reference sensor issue, what should my next step be? Thanks so much (:
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|  06-16-2009, 09:11 PM | 
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| That Guy | 
			Give the sensor connectors a jiggle, the harness connectors on both ends can be problematic. Also insure the gap of the sensors is correct.. but this is likely not a problem unless they were moved around due to other work performed on the car. 
				__________________ Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 | ||
|  06-16-2009, 09:37 PM | 
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| Registered | 
			Yeah, most likely it is the speed/ reference sensors.  Go here http://www.clarks-garage.com/  this is a must have (along with Pelican)  has pretty much anything you need to fix the cars.   Once your there, go to "Grage Shop Manual" left side of the page, Then click on "S" for speed and reference replacement/ adjustment/ clearance or scroll down the speed and refernce page.   You dont really need to remove the manifold, but to get to the bolts, you will need a big socket extension ( 1 foot or so will do).   DO NOT DROP ANYTHING!!!!!!  It can fall into the bellhousing, there are a few holes that are in that area.  Im going through this now, you dont want to, trust me.
		 
				__________________ Steve- If you havent looked, look- www.clarks-garage.com 87 951 red- Maria (current) 84 944 white- Percilla (current DD) 85.5 944 red- Pinta (past) 87 924S red- Nina (past) Last edited by thekidd; 06-16-2009 at 09:52 PM.. | ||
|  06-16-2009, 09:49 PM | 
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| Dog-faced pony soldier | 
			Speed/ref sensors.  I recently went through something like that.  Check the obvious stuff first - harness & connections, continuity at the DME plug, etc.
		 
				__________________ A car, a 911, a motorbike and a few surfboards Black Cars Matter | ||
|  06-16-2009, 10:21 PM | 
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| Registered Join Date: Sep 2005 Location: new york 
					Posts: 1,372
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			Check spark at coil, noid light on injector plug....if neither the first thing i would replace is the sensors, if you have either of them then its not the sensors. Btw you can use bmw 5 series sensors as a replacement...they are half the money
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|  06-17-2009, 08:18 AM | 
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| Registered Join Date: Jul 2004 Location: Upstate New York 
					Posts: 3,272
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			I cast a dissenting vote for DME relay.
		 
				__________________ Good luck, George Beuselinck | ||
|  06-17-2009, 09:34 AM | 
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| Registered | 
			I agree with George, put the 'Y' cable from Clarks in the socket and see if it doesn't run.
		 
				__________________ Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually | ||
|  06-17-2009, 09:43 AM | 
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