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Trouble with 04 Cobra Swap... Need some insight
- Thread starter VIPERKILLER
- Start date
Check the connector near where the right front fender and the cowl meet, near the hinge. It is square and black and has a 10mm screw holding it together. I have a pic if you can't find it.
The pin arrangement may be different between the 99 and the 03.
If you used the engine harness from the 03 and the chassis harness from the 99, your problem may be there
The pin arrangement may be different between the 99 and the 03.
If you used the engine harness from the 03 and the chassis harness from the 99, your problem may be there
e-mail sent.
let me know if it comes through ok
your shop may need the wiring schematics for both the 99 and 03 to see how they match up.
GT isn't necessarily the same as Cobra in every area.
Dan
swap
did you have your keys reprogrammed to the 04 ecu?. the 99 keys won't match up.if using the 04 ecu you should change the harness going to ecu .i believe that the polarity is reversed on the ignition coils on the gt.i have the electrical manuals for the gt and the cobra.when i did the swap my car started with the original saleen ecu but ran rough.
did you have your keys reprogrammed to the 04 ecu?. the 99 keys won't match up.if using the 04 ecu you should change the harness going to ecu .i believe that the polarity is reversed on the ignition coils on the gt.i have the electrical manuals for the gt and the cobra.when i did the swap my car started with the original saleen ecu but ran rough.
yes, as far as im told they repogrammed the keys, remotes, and computer and then turned off pats completely for the time being.
the car was originally an automatic, and since the PCM is a cobra PCM, this is what I was told on svtperf:
which seems to make sense given the specifics of the build. what im wondering is, if they are able to go in and close this loop, and make the computer believe that the clutch is depressed, is that even the computers reaction to the clutch not being pressed? where there is cranking, but no fuel pressure, and no ignition coil firing?
swap
well let me ask you a question?. is your engine cranking.if it is it's not your pats.you are not getting a signal to your fuel pumps.you are using the gt harness to your fuel pumps than the wiring is different.cobra harness has separate neutrals going to the pumps they are the 2 green/yellow wires going from the ccrm module.on the gt harness you have the wire integrated in the body harness from the ccrm module.so you have to take that wire from the gt harness an splice it into the the two green/yellow wires to have the pumps working.i had the same issue.would crank but no fuel pressure.i hope this is your problem.i don't think is the ecu looking for signal.the switch is only a secondary safety issue.
well let me ask you a question?. is your engine cranking.if it is it's not your pats.you are not getting a signal to your fuel pumps.you are using the gt harness to your fuel pumps than the wiring is different.cobra harness has separate neutrals going to the pumps they are the 2 green/yellow wires going from the ccrm module.on the gt harness you have the wire integrated in the body harness from the ccrm module.so you have to take that wire from the gt harness an splice it into the the two green/yellow wires to have the pumps working.i had the same issue.would crank but no fuel pressure.i hope this is your problem.i don't think is the ecu looking for signal.the switch is only a secondary safety issue.
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thanks :headbang:
Yes, from what I remember, its cranking for sure. Just not turning over. I havent been there since monday, because I am out of town for the holiday. But Im pretty sure I heard it cranking.
they triple checked to make sure there was power to everything, and the 3 things they mentioned was just that there was 1)no injector pulse, 2)the ignition coils arent firing, and 3)there is no fuel pressure in general.
But yes, I am using the GT body harness in conjunction with the cobra engine harness, so im assuming they will have to splice the wires and get the correct wiring to the Pumps. I am just hoping this solves all three of the issues i listed above.
the pics you posted, which harness is that?
swap
i will try to take some more picture tommorow.if you are using the 04 ecu you should've replaced the ecu harness to the engine harness.i will have to look at mine because there is another harness that you have to modify.about 11 wires from i can remember because if you used the cobra harness the green plug in the pictures i posted is specific to the gt so it has to be cut off from the original gt harness and pin matched to the cobra harness,hard to explain.i am an electrician by trade and you need the manuals for the wiring so you can compare the wires.they are the same color code between the years but with extra wires for the cobra.iat sensors.but if the shop doing the swap doesn't have electrical knowledge might be a little difficult.i am not assumming it but they should be able to diagnose it.by comparing wiring diagrams.so i don't know exactly what they replaced for me to pin point the problem.i believe that ecu harness goe's all the way to the ccrm module also and plugs into the the power harness.it's been over 2 years since i did the swap and don't remember exactly.pm me and maybe we can talk over the phone.
i will try to take some more picture tommorow.if you are using the 04 ecu you should've replaced the ecu harness to the engine harness.i will have to look at mine because there is another harness that you have to modify.about 11 wires from i can remember because if you used the cobra harness the green plug in the pictures i posted is specific to the gt so it has to be cut off from the original gt harness and pin matched to the cobra harness,hard to explain.i am an electrician by trade and you need the manuals for the wiring so you can compare the wires.they are the same color code between the years but with extra wires for the cobra.iat sensors.but if the shop doing the swap doesn't have electrical knowledge might be a little difficult.i am not assumming it but they should be able to diagnose it.by comparing wiring diagrams.so i don't know exactly what they replaced for me to pin point the problem.i believe that ecu harness goe's all the way to the ccrm module also and plugs into the the power harness.it's been over 2 years since i did the swap and don't remember exactly.pm me and maybe we can talk over the phone.
I am using the 04 cobra pcm harness as well. the only harness that should be a GT harness is the body harness and anything further back than that. most of what you said is a little confusing to me, but maybe it wont be to them. so im not sure if you still need to do all the wiring youre mentioning if I am using the cobra pcm/ecu harness as well as the engine harness. or if its just the pumps that have to be rewired.
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