88 fuel pump relay?
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 1,241
Likes: 0
From: phila. pa .usa
88 fuel pump relay?
just replaced a bad battery & my 88 wont start ,replaced the fuel pump over the summer & this is the second time I have no pressure at the fuel rail,is there a relay on the firewall ,looks like 3 wires plug in a black,purple& orange ,any ideas what it could be??
Instructor
Joined: Aug 2006
Posts: 223
Likes: 0
From: Florida
Just recently on my 88 I had the same problem (no pressure at the scrader valve) after checking everything else I changed the fuel filter and that did the trick. Dont know what got in there, the filter that was changed was only 3 months old. Try the simple things first, filter, fuse ect. Good luck. The relay is behind the battery and there is two of them.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
The two relays behind the battery are for the MAF. One is the power relay and the other is the burn off relay.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
It's there. This is an 86, but the relay locations are the same. If you have a standard transmission, there are two relays in that location. One is the fuel pump relay and the other is the 4+3 OD relay.
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Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Yep, put 12 volts to pin G on the ALDL. Both the FP relay and the oil pressure switch (which is a back up in case the FP relay fails) are fed by one fusible link. So, I'm not quite sure jumping the relay like Dusty suggested will work if the fusible link is blown. And you may want to check the wires going into the relay..insulation shrinks and they can short.
