T O P I C R E V I E W
|
fam_lace
Member # 8565
|
posted
i got a 4 bang that i change to a 351w and i changed everything but my fuel pump is not turning on when i turn the key its brand new but i think i got something thats not hooked up right cause i checked the pump from the trunk and it cuts on
|
89goose
Member # 7196
|
posted
how did you check from the truck if the pump was working ? and here is a schematic - follow the fule pump relay -use a test light to see if it has power
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif
hope that helps
|
Blind
Member # 3052
|
posted
the fuel pump relay underneath the drivers seat on a 4banger is a dummy, it has no function.
you need to replace it with a real fuel pump relay, either from a v8 donor car, or buy one for a v8 mustang from a parts store.
just one of the many differences on a 4 banger compared to a 5.0... [ August 11, 2008, 09:30 PM: Message edited by: Blind ]
|
Eddie510-
Member # 2354
|
posted
quote: Originally posted by Blind: the fuel pump relay underneath the drivers seat on a 4banger is a dummy, it has no function.
you need to replace it with a real fuel pump relay, either from a v8 donor car, or buy one for a v8 mustang from a parts store.
just one of the many differences on a 4 banger compared to a 5.0...
what do you think my problem is blind... My 88 4cyl conversion as well has a problem, when i turn key on the fuel pump stays on I tried a relay from the junk, about 3 of them but same thing. but i see your saying that relay is a dummy, but when i take it off it wont start [ August 11, 2008, 10:13 PM: Message edited by: Eddie510- ]
|
fam_lace
Member # 8565
|
posted
i checked the relay and i check the pump from the trunk it works i got two diffrent relays that connect to the harness but its not working and there were both for v8s
|
fam_lace
Member # 8565
|
posted
does the 4cyl suppose to have the relay under the seat because i dont have it the car is a 92 mustang
|
fam_lace
Member # 8565
|
posted
i had two computers and i got them mixed up the 92 V8 computer works the other was from a diffrent v8 thanks
|
Blind
Member # 3052
|
posted
quote: Originally posted by fam_lace: does the 4cyl suppose to have the relay under the seat because i dont have it the car is a 92 mustang
the 92's relay is by the MAF on the engine harness.
|
Blind
Member # 3052
|
posted
quote: Originally posted by Eddie510-: quote: Originally posted by Blind: the fuel pump relay underneath the drivers seat on a 4banger is a dummy, it has no function.
you need to replace it with a real fuel pump relay, either from a v8 donor car, or buy one for a v8 mustang from a parts store.
just one of the many differences on a 4 banger compared to a 5.0...
what do you think my problem is blind... My 88 4cyl conversion as well has a problem, when i turn key on the fuel pump stays on I tried a relay from the junk, about 3 of them but same thing. but i see your saying that relay is a dummy, but when i take it off it wont start
probably the ECU or the EEC relay, or whoever did the swap bypassed one of those relay's because they couldn't figure it out.
|