Fuel Pump
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Fuel Pump
ok i was driveng the car went to the store and wouldnt start i noticed that the fulp pump didnt make the humming noise wen the key is on and right a way i new it was the fuel pump...so i checked the fuse by the battery that i think it helps run the fuel pump and it was good i checked all the fuses and they are good i also did the conector where u can check ur trouble codes and supplied the letter G with 12v and the fuel pump made the huming noise and also herd sum clicking noises from one of the coonectors next to the brake master cylinder i think it was the maf power connectors i looked it up and it also helps with the fuel pump well if i missed sumthing or u guys know what it is or can give me suggestions let me know gona be on here all night to see if anyone can give sum help with this
Senior Member
Joined: Sep 2009
Posts: 598
Likes: 2
From: PHOENIX/ TOLLESON ARIZONA
Car: 90 IROC 5.7 1LE CLONE 89 GTA 88IROC
Engine: 5.7TPI / 5.7TPI/ 5.7TPI/ 4.3 CMFI
Transmission: 700R4 UPGRADED 700R4STOCK700R4STOCK
Axle/Gears: 3.23 10 BOLT 3.27 9 BOLT 2.77 9BOLT
Re: Fuel Pump
FLICK THE FUEL PUMP RELAY. THE SAME THING HAPPENED TO ME. I FLICKED THE FUEL PUMP RELAY AND IT GOT ME HOME. THE RELAY WAS VERY HOT / DIRTY CONTACTS OR COIL FAILING I FIGURED. REPLACED IT WHEN I GOT HOME. RUNNING EVER SINCE WITH NO PROBLEMS. KEEP YOUR FINGERS CROSSED THE FUEL PUMP IS OK. CHANGING IT OUT BLOWS.
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: Fuel Pump
thanks alot i was looking in the haynes book for help with wiring diagrams and u know those books are limited to what u can do and i was looking at all the wirind diagrams and couldnt figure it out what i did like 2 hours after i posted this i disconected the battery and waited like 30 min and it worked but for shure its gona be the fuel pump relay cause also it looks dirty but thanks a lot i mean if u have any other problems that u may be unshure of drop me a line i might be able to help...
Senior Member
Joined: Sep 2009
Posts: 598
Likes: 2
From: PHOENIX/ TOLLESON ARIZONA
Car: 90 IROC 5.7 1LE CLONE 89 GTA 88IROC
Engine: 5.7TPI / 5.7TPI/ 5.7TPI/ 4.3 CMFI
Transmission: 700R4 UPGRADED 700R4STOCK700R4STOCK
Axle/Gears: 3.23 10 BOLT 3.27 9 BOLT 2.77 9BOLT
Re: Fuel Pump
I CARRY AN EXTRA IGNITION MODULE AND RELAYS WITH ME JUST IN CASE. HAD AN IGN MODULE FAIL IN A BAD AREA IN DOWNTOWN PHOENIX ONE NITE. I FIXED IT IN ABOUT AN HOUR. I WAS LUKKY I HAD AN IGN MODULE WITH ME.
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: Fuel Pump
thats a good idea i mean were i live is high desert and theres spots where nobody or rarely pass by and you can be foreced to go walking to get help
Senior Member
Joined: Sep 2009
Posts: 598
Likes: 2
From: PHOENIX/ TOLLESON ARIZONA
Car: 90 IROC 5.7 1LE CLONE 89 GTA 88IROC
Engine: 5.7TPI / 5.7TPI/ 5.7TPI/ 4.3 CMFI
Transmission: 700R4 UPGRADED 700R4STOCK700R4STOCK
Axle/Gears: 3.23 10 BOLT 3.27 9 BOLT 2.77 9BOLT
Re: Fuel Pump
I HAD A .45 WITH ME 2.... Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
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