Thread: 2002 Grand Prix GT

I am in need of someone's opinion here.
Recently my engine started making some serious noise and I took it to the shop. They said I had a bad rod bearing and that the motor was toast.

I got a used motor installed and everything about the car is wrong now.

They took out my motor and put in another 3800 from a 2005 Monte Carlo SS - EDIT - Not supercharged.

Mechanic said that it was normal as it is the same motor.

Well, the car does not shift properly now and feels like it has 1/2 the power it had.

He claims my transmission is going out -but it was fine when I brought it in.

I am wondering, if they just switched motors, is there any possibility that the motor and trans are not compatible? Different gearing?

I am at a loss and ready to get a lawyer....ARGH!

Any info at all would be much appreciated.

-Mike

so you had this motor: http://trojanbadger.com/media/photos...-lesabre-1.jpg

and they put in this motor: http://www.greghome.com/images/New%20York%20Auto%20Show%20-%20April%2022,%202000/2K%20Grand%20Prix%20-%203800%20V6%20Supercharged.jpg

if so, there will be problems

Somewhere your information has gotten mixed up. The 2005 Monte Carlo SS had the L32 (supercharged) which FFDP showed you up there.

Originally Posted by ZR1Vette09

Somewhere your information has gotten mixed up. The 2005 Monte Carlo SS had the L32 (supercharged) which FFDP showed you up there.

This is incorrect. The 2005 Monte Carlo SS came with the L67 (Gen 3 M90). However, you are correct that mmullings is has his information mixed up though because the only engine offered in the 2005 Monte Carlo SS was the L67. If the 3800 came from a 2005 Impala (or 2005 Monte Carlo LT for that matter), it would be an L36, not an L26. You can tell the difference between the two due to the UIM manifolds (L36 is plastic, L26 is aluminum) and the L26 has an electronic t/b.

Good luck with the problems that you're having. At least the shop is covering the dealership costs.