94 gt fuel pump relay location?
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Old June 2nd, 2011, 09:19 PM   #1
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94 gt fuel pump relay location?


Anyone know were to find it?
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Old June 2nd, 2011, 10:19 PM   #2
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Inside the Constant Control Relay Module. CCRM
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Old June 2nd, 2011, 11:04 PM   #3
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Can it be unplugged without causing any harm? I used to unplug my 91s fuel pump relay at night to prevent theft and would like to do the same with the 94
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Old June 3rd, 2011, 01:51 AM   #4
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i believe it is in the trunk under the driver side panel towards the back of the car. right next to the taillight. you gotta pull up the panel that blocks it.

and unplugging it shouldnt hurt at all, you gotta unplug it when you do anyhting with your fuel lines. but i would suggest removing the negative battery cable and resetting the computer when you do tho.
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Old June 3rd, 2011, 01:58 PM   #5
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Originally Posted by h949h View Post
i believe it is in the trunk under the driver side panel towards the back of the car. right next to the taillight. you gotta pull up the panel that blocks it. and unplugging it shouldnt hurt at all, you gotta unplug it when you do anyhting with your fuel lines. but i would suggest removing the negative battery cable and resetting the computer when you do tho.
I think that's the inertia switch your talking about. It shuts the pump off in an accident. You can't get into the CCRM.
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Old June 3rd, 2011, 06:23 PM   #6
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so just for last night i unplugged the big connector on the coolant overflow bottle and that shut off the fuel pump when i put the key in and turned the ignition to the on position.
but i want to wire in a permanant easier way to make the car non operational unless i want it to ne aka a kill switch

where would ne the easiest spot? i saw the inertia switch in the trunk. can i wire a switch into one of those wires going to the red button and have that kill the fuel pump?

or is there an easier spot?
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Old June 3rd, 2011, 10:01 PM   #7
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Originally Posted by hotmustang95 View Post
I think that's the inertia switch your talking about.

your right, my bad.
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Old June 4th, 2011, 01:32 AM   #8
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any type of swith wired into the circuit will cut power to it. you can put it wherever you want really. i would say under the dash or something so you can get the circuit from the ignition maybe. this is just a spur of the moment idea.
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Old June 4th, 2011, 11:29 PM   #9
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Is the car 5 speed or Auto?
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Old June 5th, 2011, 12:12 AM   #10
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ya you should wire in a switch that you can get to from the drivers seat.....you dont want to get under the hood or trunk every time you want to start her up or disable her.....plus you dont want people to see that for some reason you have to lift up the hood/trunk every time , they may put 2 and 2 together
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Old June 5th, 2011, 09:59 PM   #11
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so ive just been unpluging the inertia switch at night and just picked up a winner internation pedal lock, feal pretty safe with that
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Old June 6th, 2011, 06:24 PM   #12
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Originally Posted by 91cobra5.0 View Post
so ive just been unpluging the inertia switch at night and just picked up a winner internation pedal lock, feal pretty safe with that
It's sad that you live somewhere that you have to be that concerned with the security of your car.
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Old June 6th, 2011, 06:29 PM   #13
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Originally Posted by hotmustang95 View Post
You can't get into the CCRM.
yes you can. I briefly came up with a plan to refurbish them since I found out where I can get the replacement relays and I drew up schematics for the electronics of it. Several different types of CCRMs were used depending on the engine and year of the car. Hell, I even have one on my '93 Mustang LX with the 2.3L engine.
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Old June 6th, 2011, 06:52 PM   #14
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What exactly is the CCRM and what is its purpose? I always see that phrase come up but I never really know what it is. Ah, modern electronics in cars..
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Old June 7th, 2011, 01:35 AM   #15
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Originally Posted by Cobraman1024 View Post
It's sad that you live somewhere that you have to be that concerned with the security of your car.
tell me about it, i have to look out the window anytime i hear a car i think is similar to mine, its stressful but mustangs get stolen left and right out here
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Old June 7th, 2011, 05:39 PM   #16
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Originally Posted by johnGT View Post
What exactly is the CCRM and what is its purpose? I always see that phrase come up but I never really know what it is. Ah, modern electronics in cars..
CCRM stands for Constant Control Relay Module. Its a box with a bunch of the most important relays and switching transistors in it. The fuel pump relay, the air conditioning high speed cutoff relay, the low speed fan relay and the high speed fan relay.

Most of the time that you have an electric fan failure in the 1994 and up Mustangs, the low speed fan relay inside the CCRM is at fault. The relay can either stick or just wear out.

On the 94 and 95 Mustangs the CCRM is located on a bracket mounted over the coolant recovery bottle. Its located in the same place for 96-98 3.8L v6 Mustangs. On the 96 and up v8 mustangs, its located inside the passenger fenderwell bolted to the cars frame.

The 93 and prior 2.3L Mustangs also have a CCRM and its located on the passenger strut tower.

Lots of other cars use a version of the CCRM and they all look very much the same; a black box with a wide three row plug with several wires leading to it.
The plug is held to the CCRM by either an 8mm or 10mm bolt going through the center of the plug; very much the same way the main wiring harness is attached to the ECU.
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Old June 7th, 2011, 05:42 PM   #17
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Originally Posted by 91cobra5.0 View Post
tell me about it, i have to look out the window anytime i hear a car i think is similar to mine, its stressful but mustangs get stolen left and right out here
I do the same thing in my place; in the last year and a half my storage unit was broken into and $1500 in stuff stolen, a brand new k-member from Summit Racing was stolen right off my doorstep within minutes of UPS delivering it and the neighbor kids threw a rock at my car putting a large chip in the paint (paint was two years old and cost $4200) in the body panel over the door window and side of the windshield.
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1996 SVT Mystic Cobra #1666/2000, 308/305, 202k miles, export taillights, MM suspension, bolt ons
1995 Mustang, 3.8L, 243k miles
1993 Mustang LX, 2.3L, T5 swap, 03 Cobra steering and brakes, 8.8 w/ 3.73s, 270k miles
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