Question about 2004 Oldsmobile Alero

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2.4l to a 2.2l engine swap

I have a 2000 Alero with a 2.4l automatic. The motor has a bad knock(main bearing). I also have a 2003 Alero with the 2.2l automatic that is wrecked in the rear. It has 50,000 miles on it. My question is, can I take the 2.4 out and install the 2.2. If so, do I have to change the wiring harness or the computer. Iwas hoping to pull the motor and transmission and swap the whole unit. Is there any hidden problems that I will run into. Thanks for any help anyone can give me.

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  • Chris Disotell Dec 26, 2008

    Thats a very thought out solution, but I just need the nuts and bolts part of it. Thanks

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  • Oldsmobile Master
  • 22,041 Answers

No problems for this mechanicaly but first to do this you will need a letter from the manufacturer stating that this is permitted and the manufacturer has a certificate of homoglonation for this vehicle thats fitted with this size engine,So providing that you can obtain this then you can have it fitted,next step is to consult an authorised motor vehicle technician who is a paid up member of the appropiate technical college to draw up the relevant papers for the technical specifications for the vehicle showing the new details.Next step is to take both vehicles to an authorised dealer to do the work,as only a garage with the right paperwork is permitted to do the work.they must be registered for value added taxes and hold a certificate of motor trade members federation.Finally when its all finished the vehicle must be be presented to the goverment run vehicle inspection station for a complete test.When it passes the vehicle roadworthyness test ,the vehicles registration document and technical specifications have to be altered in the traffic office which requires that you have paid 4% of the value of the vehicle to the goverment ,and the traffic office fee.The 4% tax can only be paid over the internet and only a registered accountant can gain access to the tax office with a digital signature so its 4% plus the accountants fee for doing this for you.Moral of story ??? if you live in spain buy another car .

Posted on Dec 25, 2008

  • Colin Stickland
    Colin Stickland Dec 26, 2008

    if the engines are the same build and only difference is 200cc then i would go for it and cross the bridges as you do it.the years are different true so some sensors might be different but the only diffference in the engine is the throw of the crank to give a different CC rating .

  • Gordface Jan 24, 2011

    just trade for a 2004 alero it comes stock with the 2.2 and is rock solid, i have over 120,000 miles on my 2004 alero and its running perfect, only had to change 02 sensor and fuel pump. over its entire life. I always put in full syn oil 5w-30 and NO LEAKS EVER. Greatest engine to ever come outta GM since small block 350, gotta love the ECOTEC engine:)

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