Code 54
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Car: 90 IROC original owner
Engine: 5.7
Transmission: TKX
Axle/Gears: 3.73
Code 54
My 90 5.7 is showing code 54
54. Low voltage at fuel pump OR Low voltage at Fuel pump relay OR Output failure at quad driver module
It needs to crank longer then usual to start.
Looked in the service manual and not finding anything for code 54.
searched for 14103304 relay on line and not finding a new replacement to try
54. Low voltage at fuel pump OR Low voltage at Fuel pump relay OR Output failure at quad driver module
It needs to crank longer then usual to start.
Looked in the service manual and not finding anything for code 54.
searched for 14103304 relay on line and not finding a new replacement to try
#3
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Car: 90 IROC original owner
Engine: 5.7
Transmission: TKX
Axle/Gears: 3.73
Re: Code 54
54Fuel pump
circuit
circuit
- Voltage at
terminal B2 is less than 2 volts for 1.5 seconds since last reference pulse was received. - Faulty fuel pump
relay, circuit and connections. - Faulty oil pressure switch.
#8
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Car: 90 IROC original owner
Engine: 5.7
Transmission: TKX
Axle/Gears: 3.73
Re: Code 54
Fuse is good
Have power to the relay
Relay clicks when key is turned on then clicks again a few seconds later
Wont be able to get to the OPS until later in the week
Have power to the relay
Relay clicks when key is turned on then clicks again a few seconds later
Wont be able to get to the OPS until later in the week
#11
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Car: 90 IROC original owner
Engine: 5.7
Transmission: TKX
Axle/Gears: 3.73
Re: Code 54
Found the code 54 Troubleshoot Tree
The tests indicate a faulty relay
Relay ordered and will install when it arrives
Big thanks to Tuned Performance
The tests indicate a faulty relay
Relay ordered and will install when it arrives
Big thanks to Tuned Performance
#12
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Car: 90 IROC original owner
Engine: 5.7
Transmission: TKX
Axle/Gears: 3.73
Re: Code 54
Relay fixed the problem.
Bought the service manual when I purchased the car new, First time I used it for a repair.
Bought the service manual when I purchased the car new, First time I used it for a repair.
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