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rackhound
Joined: 03 Mar 2008
Posts: 5
Location: Dry fork, Virginia
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 Posted: Mon Mar 03, 2008 9:18 am Post subject: no fire |
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I just bought a 84 944 and am quikly learning alot. My question is this....Ive got 12 volts going to the distibuter cap from the ignition coil but no spark coming out. what could be my problem? Ive already replaced one of the two sensors mounted to the intake, and the other was good. any help would be appreaciated.
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Mon Mar 03, 2008 12:50 pm Post subject: |
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Welcome to the board. Here's a great place for 944 info:
http://www.clarks-garage.com/
Trouble shooting for your issue is here:
http://www.clarks-garage.com/shop-manual/ts-01.htm#fire
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Mon Mar 03, 2008 6:29 pm Post subject: Re: no fire |
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| rackhound wrote: | | Ive got 12 volts going to the distibuter cap from the ignition coil but no spark coming out. what could be my problem? |
12 V on the king lead? That's not right! Sounds like you've got a shorted coil.
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1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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rackhound
Joined: 03 Mar 2008
Posts: 5
Location: Dry fork, Virginia
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| Posted: Tue Mar 04, 2008 10:25 am Post subject: Re: no fire |
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| Mike924 wrote: | | rackhound wrote: | | Ive got 12 volts going to the distibuter cap from the ignition coil but no spark coming out. what could be my problem? |
12 V on the king lead? That's not right! Sounds like you've got a shorted coil. |
Glad I found this place I know its not a 944 board but it seems like a good place and you guys really know what your talking about. A guy at the autobahn.com told me I should try here.
If my speed sensor and reference sensor had gotten switched around by mistake would this cause my problem?
I would just switch them to find out but im not sure if it would cause other problems if I did this and its not the problem.
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Wed Mar 05, 2008 5:40 pm Post subject: |
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I'm out of my depth with 944 speed and reference sensors.
I suggest you follow one of Paul's links to find someone with experience closer to your area...
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1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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Rich H
Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK
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| Posted: Wed Mar 05, 2008 11:02 pm Post subject: |
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Again no idea about '44s but as above, there should not be +12V on the dizzy cap. There should be +12V to one side of the coil and then the coil is triggered by earthing it, normally carried out by the ECU, but that depends on the setup. On a '24 its done by the Transistorised Control Unit, on a '44 I have no idea.
I would start with another coil and see what happens.
Good Luck
Rich
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1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec |
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rackhound
Joined: 03 Mar 2008
Posts: 5
Location: Dry fork, Virginia
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| Posted: Mon Mar 10, 2008 12:24 am Post subject: |
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| Rich H wrote: | Again no idea about '44s but as above, there should not be +12V on the dizzy cap. There should be +12V to one side of the coil and then the coil is triggered by earthing it, normally carried out by the ECU, but that depends on the setup. On a '24 its done by the Transistorised Control Unit, on a '44 I have no idea.
I would start with another coil and see what happens.
Good Luck
Rich |
I swapped coils and dmes with known good ones and did a resitance check at the plug that goes into the back of the dme and found out that im not getting a good connection at the speed sensor connection on the back of the intake. hopefully today ill have it running.
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rackhound
Joined: 03 Mar 2008
Posts: 5
Location: Dry fork, Virginia
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| Posted: Mon Mar 10, 2008 8:44 pm Post subject: |
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Finally got it running.  Thanks for the help.
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Ozzie
Joined: 12 Mar 2005
Posts: 4448
Location: Townsville, Qld. Australia
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| Posted: Mon Mar 10, 2008 9:30 pm Post subject: |
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What was it?
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Porsche 924 1984 (UK import) NA
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Montego Black on black/red
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Tue Mar 11, 2008 12:01 am Post subject: |
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A duff 944! 
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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rackhound
Joined: 03 Mar 2008
Posts: 5
Location: Dry fork, Virginia
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| Posted: Tue Mar 11, 2008 9:02 am Post subject: |
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was the speed sensor, it wasnt getting a good connection at the plugin. I filed some corosion off and plugged it back in then had to tap on the fuel pump to get it running. The car sat for 5 years in a garage before I bought it.
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Tue Mar 11, 2008 9:04 am Post subject: |
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Check the timing belts, a lot of us replace them every 3 years or 36000 miles.....
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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