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Originally Posted by frostburner
well.. the previous owner told me it had to be warmed up.. since i didnt have a clue on how vnt turbos worked only had experince with t3 garrets i figured that was right.. but yea it got worse as i got home from work.. im parking the car until further notice.. i was told the vnt turbo was rebuilt recently.. not sure how long rebuilt vnts last for.. also am having other noises when in gear... i know some trannies are loud but this chatters loud to wher eim afraid to drive the car now.. well it was fun for 1 day of good driving.. anyone interested in some recaro interior.. might have to sell it to get $$ to fix this now.. :(
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Hey man, don't hang your head low just yet!
I didn't mean any offense by what I stated about the turbo needing warming up, so I hope I didn't offend you.
Try to diagnose each problem individually, instead of letting them overwhelm you.
Without getting into it too deeply, a
VNT's main difference from a conventional turbo is it doesn't have or need a wastgate; internal nor external. They are very sensative to vac leaks, backpressure changes, and you guessed it, denser air (cold mornings).
Now, first off, who rebuilt the turbo and is it still under warranty? Just because it was rebuilt doesn't mean it was done properly. See if you can find out if it was balanced-properly.
VNT's can spin a bit higher than a Garrett turbo, so their need to be balanced properly is a bit more crucial than others. Take off the air intake hose and reach your hand down there and try to spin the turbo blade. If you feel or hear any grinding, hear any noises, if it doesn't spin "freely", or you can grab the edge of the blads and the shaft moves in and out, then you may need a rebuild of a rebuild.
The transmission noise; does this happen while just in gear, in neutral or both? If it happens in gear, first thing is to check the fluid level of your trans. I know this may sound simple but sometimes big things stem from little ones. How tough is it to get into gear?
Try giving us a bit more info so we may be able to help you and you can keep your Shelby CSX interior! LOL It's a good looking car, don't give up just yet.