Disable fuel system for compression test?
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
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From: Lehigh Acres FL
Tech Contributor
Disable fuel system for compression test?
Curious what the proper way to disable the fuel system is for doing an engine compression test. I already have the ignition system disabled by disconnecting the coil packs but not sure about fuel system. I assume I would pull the fuel pump relay and then run it till it shuts off? I have the service manual but it advises that you must put the car into compression test mode with a scan tool (not an option for me). Surely disabling the fuel and spark is sufficient enough. Thoughts on correct fuel system disabling procedure?
Ant
Ant
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
I didn't get to do it actually. I got caught up working on repairing my daily driver. Can only afford to have one car not drivable at a time lol. I'm still at work now so likely won't be able to do it tonight either. My new plug wires will be in either tomorrow or Wednesday though so I don't have everything to finish it up today anyway. Don't worry.. as soon as there are updates the forum is the first to know!! LOL
Last edited by FYREANT; Dec 28, 2015 at 05:50 PM.
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Ok I have found two fuses related to fuel (no relays). In the front fuse box is fuse number 31 (10A), which is listed as the " Fuel Pump Driver Control Module". This is abbreviated on the fuse box diagram under the lid as "FPPM"
In the back fuse box (in trunk) there is fuse 30 (25A) which is also listed as the "Fuel Pump Driver Control Module". This is abbreviated on the rear fuse lid as "FUEL PUMP PWR MDL".
I assume pulling both of these fuses should be good enough to stop fuel flow and not damage anything right?
In the back fuse box (in trunk) there is fuse 30 (25A) which is also listed as the "Fuel Pump Driver Control Module". This is abbreviated on the rear fuse lid as "FUEL PUMP PWR MDL".
I assume pulling both of these fuses should be good enough to stop fuel flow and not damage anything right?
Burning Brakes
Joined: Apr 2010
Posts: 1,001
Likes: 37
From: Farmington Missouri
Ok I have found two fuses related to fuel (no relays). In the front fuse box is fuse number 31 (10A), which is listed as the " Fuel Pump Driver Control Module". This is abbreviated on the fuse box diagram under the lid as "FPPM"
In the back fuse box (in trunk) there is fuse 30 (25A) which is also listed as the "Fuel Pump Driver Control Module". This is abbreviated on the rear fuse lid as "FUEL PUMP PWR MDL".
I assume pulling both of these fuses should be good enough to stop fuel flow and not damage anything right?
In the back fuse box (in trunk) there is fuse 30 (25A) which is also listed as the "Fuel Pump Driver Control Module". This is abbreviated on the rear fuse lid as "FUEL PUMP PWR MDL".
I assume pulling both of these fuses should be good enough to stop fuel flow and not damage anything right?
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
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Melting Slicks
Joined: Dec 1999
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From: Tulsa, Ok
Don't know if this is a poor idea but you could always hard wire your starter motor and bump it 4 or 6 revolutions with a spare battery. If you give this more thought, I'd remove all plugs for less drain on the starter/battery.
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
I pulled all plugs already so no worries there. Pulling both those fuses did the trick
