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Fuel pump relay location

 
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oldguy



Joined: 20 Jul 2016
Posts: 4
Location: nola

PostPosted: Wed Jul 20, 2016 8:22 pm    Post subject: Fuel pump relay location Reply with quote

Hello to all,

I am trying to locate the FP Relay in a 85 ASC Convertible. I did manage to find the ECC relay so far, but no FP relay, I'm assuming it has a Pink/Black hash marked wire but stranger things have happened.... A copy of a correct schematic would also be very helpful.

Thank you
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4-barrel Mike



Joined: 30 Jan 2016
Posts: 108
Location: Portland, OR

PostPosted: Wed Jul 20, 2016 11:10 pm    Post subject: Reply with quote

I believe it's under the driver's seat.

Power in - Yellow (18 ga fuse link in engine compartment)
Power out - Pink/black hash (to fuel pump)
Relay activation power (from inertia switch) - Red/black hash
Relay ground (via ECM) - Tan/light green dots

Info from 1985 Mustang/Capri Electrical & Vacuum Troubleshooting Manual (aka EVTM) http://www.ebay.com/itm/FREE-SHIPPING-1985-Ford-Mustang-Capri-Electrical-Vacuum-Troubleshooting-Manual-/272312719643?hash=item3f671a591b:g:xSoAAOSwIgNXjhiW&vxp=mtr

Mike
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1985 5.0 SC, white/blue, modded by POs (more mods coming)
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oldguy



Joined: 20 Jul 2016
Posts: 4
Location: nola

PostPosted: Wed Jul 20, 2016 11:24 pm    Post subject: Reply with quote

Thanks Mike, but it's not under the driver's seat.
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negusm
Site Admin


Joined: 25 Aug 2004
Posts: 5018
Location: Charlotte, NC

PostPosted: Thu Jul 21, 2016 12:50 am    Post subject: Reply with quote

85's had electric fuel pumps?

Manual cars had mechanical ones.

Automatic CFI ones, I am not sure on.

-Mike
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1985 ascMcLaren Coupe - Midnight Blue
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knsstang



Joined: 27 Apr 2005
Posts: 163
Location: Detroit, Michigan

PostPosted: Thu Jul 21, 2016 2:19 am    Post subject: Re: Fuel pump relay location Reply with quote

oldguy wrote:
Hello to all,

I am trying to locate the FP Relay in a 85 ASC Convertible. I did manage to find the ECC relay so far, but no FP relay, I'm assuming it has a Pink/Black hash marked wire but stranger things have happened.... A copy of a correct schematic would also be very helpful.

Thank you

I have an 89 and mine is under the drivers seat. I've wired a fuel pump shutoff toggle switch to it (hidden to aid with anti-theft).
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1989 Royal Gold Metallic #095
2001 Kawasaki ZX12R(88,695 miles)
2013 Kia Optima


Last edited by knsstang on Thu Jul 21, 2016 1:36 pm; edited 2 times in total
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negusm
Site Admin


Joined: 25 Aug 2004
Posts: 5018
Location: Charlotte, NC

PostPosted: Thu Jul 21, 2016 1:30 pm    Post subject: Reply with quote

It's funny, I have seen a few people on the net say they found it under the driver's seat on an '85...one guy mentioned that if the carpet is replaced the installer will not often cut a spot for it to go through.

Another guy said his was in the trunk next to the latch.

-Mike
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oldguy



Joined: 20 Jul 2016
Posts: 4
Location: nola

PostPosted: Thu Jul 21, 2016 2:08 pm    Post subject: Reply with quote

I removed seat to expose Alpine power amp (flopping around) and will pull carpet up once seat bracket and amp are removed (amp will be properly disposed of) as it feels like it could be under the carpet. I'll follow up with a post.

Thanks
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oldguy



Joined: 20 Jul 2016
Posts: 4
Location: nola

PostPosted: Thu Jul 21, 2016 3:05 pm    Post subject: Reply with quote

I was wrong it's under the seat under the carpet. Screwy I had a mental block about fixing this thing till I found the FP relay. The blk/grn wire at the ECC relay according to wiring schematic is chassis ground, however it is intermittent. Yes it also terminates at #40 & #50? (hard to id on schematic) at the ECM and both HEGO sensors. I'm okay with splicing into blk/grn near ECC relay and grounding it. Yes the car runs when I ground it. The FP relay will remain EXPOSED under the seat now. Unsure how to post pix so imagine a low mileage red convertible that has survived in a museum for most of it's existence with an example of some of the most frightening stereo installation techniques I've run across.

Thanks Again
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4-barrel Mike



Joined: 30 Jan 2016
Posts: 108
Location: Portland, OR

PostPosted: Thu Jul 21, 2016 4:10 pm    Post subject: Reply with quote

Good Job

Mike
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4-barrel Mike



Joined: 30 Jan 2016
Posts: 108
Location: Portland, OR

PostPosted: Thu Jul 21, 2016 6:00 pm    Post subject: Reply with quote

oldguy wrote:
. Yes it also terminates at #40 & #50? (hard to id on schematic)


EVTM shows 40 & 60 (which I think is a Ford standard, as later pin breakouts show the same).

Mike
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