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Registered User
Join Date: Oct 2010
Posts: 13
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Time to buy a DME?
I did the jumper wire from the battery to the coil on my 1984 944 the engine will crank but still does not fire . the in line spark tester from the coil to the distributer cap did not light up . The plugs have been replaced .The fuses tested ok. DME relay tested ok , fuelpump and filter have been replaced , injectors have been rebuilt. fuel flow tested ok . I inspected under the dash and did not find any water dammage. I opened up the DME and did not find anything obviously wrong. the ribbons connectng the two boards looked ok . Is it time to buy a new DME? Also will the engine still crank with a bad starter switch?
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01-25-2011, 05:26 AM
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Registered
Join Date: Apr 2010
Posts: 3,003
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Do you know anyone that has an early 944? If you do I would see if I could borrow it.
Did you make sure the engine is grounded properly? You wouldn't get any spark if it isn't grounded. It happened to me so I'm just throwing it out there. Last edited by Jrboulder; 01-25-2011 at 06:54 AM.. |
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01-25-2011, 06:33 AM
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Registered
Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,347
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doesn't the crank postion sensor relay to the DME that its ok to fire up the fuel (and maybe some other things?)
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1970 914-6 Past: 2000 Boxster 2.7, 1987 944, 1987 924S 1978 911SC, 1976 914 2.0, 1970 914 w/2056 |
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01-25-2011, 06:45 AM
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Quote:
 ____check those grounds
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 83-944 show room -sold___New ride 93-968 with SC steering wheel-ROW signal ligths- Susp M030 mods lowered,Porsche VA springs- Adjustable struts - Bilstein inserts - Bilstein sport rear -LSD -riding on Cup 1 wheels 17x8 frt 17x9.5 rear road contact Falken 452/ 225-45 ZR Front 255-40 ZR Rear -- Motor Mods /chip /K&N / mod air boxe just love the handling & power
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01-25-2011, 06:46 AM
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Registered
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I have a known tested good early 944 DME computer! I will ship it to you for $100. Comes with free good DME relay!
thanks & good luck
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'83 944 ROW zermatt silver/black, sunroof & A/C factory deleted, houndstooth sport seats, 7Q - 220 LSD short fifth, F & R 23.3 MM 951 M030 suspension, 16" fuch's, manual windows, club sport mirrors, Blk/Wht gauges, rear seats & all sound deadening removed, 968 rear wing, fiberglass hood & 937 F bumper |
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01-25-2011, 08:24 AM
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Rocket Surgeon
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how are the speed/reference sensors? how are their plugs?
I'd look there first. one of my connectors broke out of the blue (with my boss in the car, no less) and it wouldn't do anything. the connectors are at 6 o'clock in the picture above.
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'89 951S, Velvet Red Plymouth Superbird, Corporation Blue Plymouth Superbird, Blue Fire Metallic |
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01-26-2011, 08:17 AM
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Registered
Join Date: Feb 2006
Location: Warrington, PA
Posts: 1,348
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yes, dou didnt mention that you tested the reference sensors. Taking you car to a shop is the true way of testing the sensors, but a quick way to check them is to try and start the car and to watch the tach. If the tach bounces, then the sensors are OK. Sensors deal with the DME, DME relay, and fuel pump, and injectors. Forget exactly how, but they are related. Good Luck
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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) |
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01-26-2011, 08:41 AM
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Registered
Join Date: Nov 2004
Location: ronkonkoma ny 11779
Posts: 2,024
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yes its time, if not to fix this to keep in the car as a good spare, can save alot of trouble someday
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83 944....bye bye 85.5 euro spec 944, 5sp (she's gone....  74 914...hasta LA Vista baby 87 924s....don't let the door hit ya 68 912.......see ya! |
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01-30-2011, 11:16 AM
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Registered
Join Date: Mar 2008
Location: Nashville, TN
Posts: 4,053
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are you sure the coil's good? i killed one once.
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01-31-2011, 09:17 PM
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944 "old faithful"
93-968 "dream"
Porsche 944
1989 Duh? 951
