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2004 Volvo XC90 Question: Engine Control Module

 

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steve51965, 2.9L 6 Cylinder Turbo, Derry, NH, September 01, 2010, 10:00
 Rookie

I need to know how to remove and install the engine Control Module in my Volvo XC 90. Suppose to just plug right in. Can't get the old one out. Maybe i'm just not seeing clips holding it in.

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, September 01, 2010, 14:24
     Master

    There's a special tool for removing the computer. You may need to program the new module to the car as well, so this is best left to a shop with the ability to load the appropriate software into the module.
    Why are you replacing it?

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    Visitor, September 02, 2010, 09:58

    This is what happened. All of a sudden, wake up one morning and start the car and it's running rough and the check engine light is on. So... I took it to the Dealer a couple days later. They tell me it will be $105.00 to plug my car in to the computer for a diognosis. They come back and tell me that all 6 cylinders are misfiring and they would like to do a compression check which would be another $210.00. to check head for leaks rings etc. I said OK. They came to me and said compression was good in all 6 cylinders but they noticed that the timing belt was origional and with the miles on the car, the belt could have jumped a tooth or 2. I asked how much was this going to cost me. They told me $1012.00 and they said they would try to knock 10% or so off the bill. I said WOW this really hurts, but go ahead and do the job because I really need the car fixed. They called me and said the timing belt didn't fix the problem and the car needs a Engine Control Module for another $1400.00. Needless to say, I asked them if this was going to be another crap shoot, and took my car and purchased a ECM knowing it would need to be programmed by ANOTHER Dealer. Dealer will only install their own new part.I purchased a used part , now I have to swap them out and they will reprogram ECM for $200.00.

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