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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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 Posted: Mon Aug 13, 2012 6:32 am Post subject: 924 turbo fuel issue |
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does anyone have a wiring diagram for a 1981 924 fuel pump? i cant figure out why the fuel pump has no power!  |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Mon Aug 13, 2012 9:42 am Post subject: |
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Pull the fuel pump relay and check pole 30 with a 12V test light. This post is fed directly from the postive terminal of the battery (red/blue wire)
Check 16 amp fuse at postion 2 on the small fuse panel.
Check for continuity from pole 87 of the fuel relay socket to the +wire at the pump.
Make sure the wire on your overboost switch is connected.
I emailed you the diagram.
_________________
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.
Last edited by Paul on Mon Aug 13, 2012 1:16 pm; edited 1 time in total |
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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Mon Aug 13, 2012 10:42 am Post subject: |
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| THANK YOU! I will check this out tomorrow morning and will get back to you on what my next move should be. thanks again |
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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Mon Aug 13, 2012 10:43 am Post subject: |
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| Paul wrote: | Pull the fuel pump relay and check pole 30 with a 12V test light. This post is fed directly from the postive terminal of the battery (red wire)
Check 16 amp fuse at postion 2 on the small fuse panel.
Check for continuity from pole 87 of the fuel relay socket to the +wire at the pump.
Make sure the wire on your overboost switch is connected.
I emailed you the diagram. |
thank you!! |
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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Tue Aug 14, 2012 8:11 am Post subject: |
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| Paul wrote: | Pull the fuel pump relay and check pole 30 with a 12V test light. This post is fed directly from the postive terminal of the battery (red/blue wire)
Check 16 amp fuse at postion 2 on the small fuse panel.
Check for continuity from pole 87 of the fuel relay socket to the +wire at the pump.
Make sure the wire on your overboost switch is connected.
I emailed you the diagram. |
i get power to to pole 30 and did a continuity test from 87 to the fuel pump to my knowledge the over boost is connected and i tried unplugging it for shits and giggles and watched the tach bounce around so im guessing that the over boost is working
whats my next move? is my relay bad? |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Tue Aug 14, 2012 9:10 am Post subject: |
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Assemble a jumper with a piece of wire and two 1/4" spades and plug into 87 and 30 and see if the pump runs.
If not check the ground at the pump.
_________________
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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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Tue Aug 14, 2012 9:12 am Post subject: |
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| Paul wrote: | Assemble a jumper with a piece of wire and two 1/4" spades and plug into 87 and 30 and see if the pump runs.
If not check the ground at the pump. |
i just used a wire and spliced the ends off and still nothing? |
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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Tue Aug 14, 2012 9:13 am Post subject: |
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| Paul wrote: | Assemble a jumper with a piece of wire and two 1/4" spades and plug into 87 and 30 and see if the pump runs.
If not check the ground at the pump. |
i just used a wire and spliced the ends off and still nothing? |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Tue Aug 14, 2012 9:24 am Post subject: |
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You did check 30 with a 12V test light correct?
_________________
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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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Tue Aug 14, 2012 9:55 am Post subject: |
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| Paul wrote: | | You did check 30 with a 12V test light correct? |
i used a volt meter and saw 12. something. |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Tue Aug 14, 2012 11:01 am Post subject: |
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Wrong.
_________________
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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jeffrey924
Joined: 05 Aug 2012
Posts: 17
Location: Sayville, NY
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| Posted: Tue Aug 14, 2012 2:35 pm Post subject: |
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i just went to test the fuel pump again and the bolt broke on the fuel pump where do you thing the best place is to buy a fuel pump and i need to get a test light as well |
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