ECU or TCM?

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240femme
Posts: 57
Joined: Sat Oct 25, 2003 1:16 pm
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A while back, I asked about transmission problems....sometimes my 94 240sx gets stuck in first gear or even second gear and will not shift. Sometimes it will eventually shift and if not, restarting the car fixes the problem - temporarily. It did this before and after the transmission rebuild. Someone (Nistech I think) suggested it could be the transmission control module since it happens even after the rebuild and is fixed when the car is restarted. I have learned to deal with the problem since I am a student and don't have a lot of moolah, however, I would like to take care of it in case it's putting extra strain on the transmission...I can't afford another rebuild. I would also like the car to run well for the day I actually decide to give it up. I finally called the dealer about a TCM and was told that the 94 doesn't have one...he wasn't sure when but said Nissan gave the TCM's job to the ECU. I am wondering if this is correct since I was told to check out the TCM before. I have four questions really:

1.)Is the ECU most likely what I need?

2.)Should I go with a junkyard/ebay used ECU or opt for an aftermarket one? The dealer wanted $1400 for the OEM one (YIKES!)

3.)What are the benefits of the aftermarket EUCs I've heard of? Would any difference in price over the used standard ECU be worth the cost difference? I'm not looking to race...just drive reliably.

4.)Do the aftermarket ECUs come programmed for the car and if not, where would I go about getting that done? Could I possibly do it myself?

If anyone could answer any or all of my questions, I would greatly appreciate it. I'm looking forward to getting my baby back in shape.

P.S. I have to get my power steering rack and pinion replaced. Is this typical of a 94 240sx with about 156,XXX miles?


NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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Shesus!!! I will try to look up the TCM for you tomorrow and get the price. I think you dealt with a inexperianced parts man.

NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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ok Incase I dont get a chance to look it up tomorrow i went ahead and got ya this diagram. I went ahead and added some subtle pointers to where the unit is located on your car. Feel free to go back to your part proffesional and give it to him to asist you competantly.


240femme
Posts: 57
Joined: Sat Oct 25, 2003 1:16 pm
Car: anything and everything
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HAHA...yes, subtle indeed. Thank you.

NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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no problem. Anything to help the part challenged employees at your local dealer.:D

240femme
Posts: 57
Joined: Sat Oct 25, 2003 1:16 pm
Car: anything and everything
Contact:

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I am going to see what the junkyard has..although I'm a little worried about ending up with the same problem. I was wondering if you know the part number or of any other cars that use the same one. I've googles for the info without luck. Thanks.


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