i went from a 2000 2.2 ohv 3 speed to 2002 ecotec 4 speed everything went smooth but a few things and here is a list of them any help would be apperiated
1 no guages work but the check engine light does ( o2 sensor not hooked up)
2 ignition seems to be backwards with the key 3/4 of the way in the stock cd player comes on and the lock in the shifter is disabled but when the key is turned all the way over the shifter is locked (kinda wierd)
other than that car runs great so far so thanks and any help would be great
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i have a few quick questions for you. were the mounts for the 3 speed auto and 4 speed auto in the same places or did you have to weld in new transmission mounts? did you have to use the axles from the car with the 4 speed auto or did the 3 speed auto axles work just fine?
You need the actual 4t40e mount that is bolted to the transmission, but you don't need to make any modifications to bolt holes on the mount welded to the frame. So yes, no welding. I suggest you search this forum for 97ecotecRS's ecotec swap FAQ.
actually the mounts for the 3spd and 4spd are the same up to 02 , gm changed something in 03 cause the part # is different
the gauges are most likely because you missed a ground wire
2000ecocavalier wrote:if you are speaking of what controls all of the accesories no that stayed the same
That might be the problem, the BCM is under neath the dash, and controls a lot of things. You need to in the swap.
FU Tuning
I think the BCM has a security code built in as well doesn't it?
2000ecocavalier wrote:yeah you do get a theft/security code which is easy removed by turning the key down and waiting for the light to blink not a big deal but i still get my cel and stuff its just the actuall spedo temp and gas gauge
You need the ecotec BCM. You are running off the 2.2 BCM. The theft lock is in the gauge cluster.
FU Tuning
I havent been around too much been way busy. But I tried to use my 97 BCM with the ecotec and I might have forgotten to put that in the faq. I apologize. I couldnt use it at all. For some reason it wouldnt come out of theft or if it did I had fuel problems. That is after I switched all my fuel system from the old style to the 00+ I had to go buy a new one for an ecotec since the used ecotec one I accidentally broke.
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2.2 Ecotec Swap Completed!!!
97EcotecRS (Streetracin22) wrote:I havent been around too much been way busy. But I tried to use my 97 BCM with the ecotec and I might have forgotten to put that in the faq. I apologize. I couldnt use it at all. For some reason it wouldnt come out of theft or if it did I had fuel problems. That is after I switched all my fuel system from the old style to the 00+ I had to go buy a new one for an ecotec since the used ecotec one I accidentally broke.
He did not need to change fuel tanks etc... because he has a 2000+, but he needs the BCM.
FU Tuning
why do i need the bcm all of the other accesories work brake lights headlights check engine light works because my 02 sensor is not hooked up ... my car starts and runs without any problems and came out of theft mode very easily but john maybe right on the ground wire but i will have my mech check it out soon and i will keep everyone updated and thanks for all your help
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ok so no bcm necessary if you are doing the swap, just a confirmation
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2007 Cobalt SS
2001 Sunfire (retired)
