Ok, so I have had a problem with my 94' Cobra recently. If I am cruising on the freeway with a consistent throttle position, the car will cut in and out (like the fuel pump cuts in and out) every 5 or so seconds, if I'm going up and down with throttle its fine. After the other night, I stated it up, ran it for 2 min, then shut it off. After that the fuel pump would not turn on. The motor would just crank, and not start. Finally after looking at all the fuses, wires etc.. and trying the ignition to see if it would prime... nothing. the only way for me to get it on is if I unplug the 4 wire harness behind the gas tank and plug it back in. Its almost like I have to "reset" the ccu behind the radiator, or the fuel pump relay for it to work. Any ideas??? Is my pump going out? its fairly new.... :BangHead:
Electrical Problem.. need help!!!
- Thread starter birel21y
- Start date
CC'S95GT
Post Whore
do you have a multimeter or at the very least a test light? the fuel pmp relay is in the ccrm (the box by the rad expansion tank) check the output for the fp there. you'll need to have a helper since the fp will run only for a couple seconds. if you have voltage at the ccrm then ck the fp connector itself
94kingcbra
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Sounds like you have corrosion somewhere in the circuit. First check your battery terminals, and make sure that the ground has a clean and solid connection. After that pull each connector in the circuit and look at the connections inside them. A sharp pick can clean up the female connectors and a simple wire brush will help with the male connectors...
Another thing you can do with a digital multimeter is test the resistance of the wire from connector to connector....If you have alot of resistance in certain area, there in lies your problem...When doing resistance testing remember that there should be no power in the circuit, and your digital multimeter should be set to Ohms. Another thing you can do is a pinpoint voltage test. This is where you place the ground in one location, and with power going through the circuit, you test the voltage at each connector, if there is a major difference, then whatever is between your last one is probably your problem...I wish I could be there to help...These intermittent problems can be very hard to find....Good Luck
Another thing you can do with a digital multimeter is test the resistance of the wire from connector to connector....If you have alot of resistance in certain area, there in lies your problem...When doing resistance testing remember that there should be no power in the circuit, and your digital multimeter should be set to Ohms. Another thing you can do is a pinpoint voltage test. This is where you place the ground in one location, and with power going through the circuit, you test the voltage at each connector, if there is a major difference, then whatever is between your last one is probably your problem...I wish I could be there to help...These intermittent problems can be very hard to find....Good Luck
