They Love to Strand You
Thread Starter
Senior Member
Joined: Oct 2005
Posts: 874
Likes: 0
From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
They Love to Strand You
Well guys I was coming home from the track last night and I hit a really hard bump, the car for maybe less than a minute after that before dying while going like 55. I pulled it over to the side of the road and would just turn over and not fire. I then noticed the fuel pump was not priming. I towed the car home and was suspicious about the ignition module. I tested it for spark and it has it. So now im confused on what could be wrong. Why would a fuel pump die on a bump? What else can I check before I look into a pump? Thanks guys.
Member
Joined: Apr 2007
Posts: 123
Likes: 0
From: near albany ny
Car: 87z28
Engine: 70 LT1
Transmission: 350 TURBO BUILT BY B&M
Axle/Gears: 12 BOLT POSI
Re: They Love to Strand You
check your wiring going to the fuel pump or check for a relay that may have came unplugged
Supreme Member
Joined: Jan 2003
Posts: 1,931
Likes: 1
From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Thread Starter
Senior Member
Joined: Oct 2005
Posts: 874
Likes: 0
From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
Re: They Love to Strand You
Ok I checked all of the fuses and they are ok. I know it has spark. I took the fuel pump relay off of my RS and tried to run it with that and still not start. I put my finger on both relays to see if i could feel them click when I turn on the key and I dont hear or feel anything. Where should I look next? is it hard to bypass the relay?
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iTrader: (1)
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Posts: 18,432
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: They Love to Strand You
There is a fuse stashed under the hood that is known to go bad. It feeds the ECM & fuel pump power. It is inline with a heavy wire that runs along the passenger side fender. A small plastic holder is used for the fuse, closer to the radiator end of the wire.
RBob.
RBob.
Thread Starter
Senior Member
Joined: Oct 2005
Posts: 874
Likes: 0
From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
Re: They Love to Strand You
ahhh i cant find that fuse, this is on the firebird. The only wire I see is a ground wire that goes to the battery, and wiring to the fans.
Thread Starter
Senior Member
Joined: Oct 2005
Posts: 874
Likes: 0
From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
Re: They Love to Strand You
I found the fuse next to battery and both wires going into it were pretty much cut. I reconnected and it runs cross your fingers for me.
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