Sensor Identification please
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Sensor Identification please
So on an 89 camaro, the fuel pump relay is on the drivers side firewall. What is the relay directly to the left of it called?? On a TBI car the spark module is located right behind this sensor, thanks
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Re: Sensor Identification please
So why does the fan cut off when the fuel pump relay is unplugged?
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Re: Sensor Identification please
One sensor has 5 wires one has 4 wires. They're not swapped
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Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Re: Sensor Identification please
Nothing happens differently. It I unplug the fuel pump relay, the pump primes fine, car starts fine. If the fuel pump relay is plugged in, the fuse by the battery blows.
Supreme Member
Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: Sensor Identification please
Then you have the wrong relay. There is no way for the ECM to provide power to the pump, without that relay.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Re: Sensor Identification please
And the fuse blows only after the car is warmed up
Joined: Jan 2009
Posts: 887
Likes: 17
From: Golden, CO
Car: 87 IROC
Engine: L31 350
Transmission: T56
Axle/Gears: 4.10 D44
Re: Sensor Identification please
Do you have the fuel pump and fan connectors reversed at the relays? It fits the problem you are describing... Car gets hot, fan turns on and blows the fuse.
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