I have an 04 Xfire 6 speed with 14k miles on it. I just bought it from car max and I noticed that sometimes when I'm shifting from 2-3, i get a low thud sound coming from behind me. It sounds like a basket ball in the trunk.

It doesn't happen all the time but does occur when I shift from 2-3 or from and hi gear to nuetral, so basically when I push in the clutch.

What would be causing this? My driving style or the car?

Oh and hi, I'm new to these forums

 

First welcome to the Best Lil XFire Forum on the Net !!! AKA: Your Perma Grin Support Group
Did you happen to lift the carpet in the trunk and look underneath ? Possibly a basketball rollin around !

Just my Dos Centavos !

 

there should be a molded foam piece that holds the jack pump, ect in the back. make sure its all secure.

 

are there any exterior mods?

Is everything else stock as well?

 

This is going to sound silly but I'll bet money that it is the problem and the fix. Problem: thud in the rear end, not always but sometimes.
Cure: your passenger side window sometimes, or in my case, always goes up too high. Poor calibration. All I do is open it a tad, not enough to let any air in but just enough so that it clears the weather stripping. It simple does not happen any more. Problem solved. Try it and you will see.
Rick

 

Check the hatch and see if there is any up and down play in the latch by pushing it down from the outside. It can rattle or thump, depending.

David

 

Welcome aboard. Possibilities are endless. Process of elimination narrows them down.
1. remove everything from "trun" and behind and/or under seats. test drive.
2. if problem not eliminated, do a visual check under rear of car for worn bushings at ends of shocks, stabilizer and links.
3. With car on a lift or on JACK STANDS, try moveing rear wheel back and forth with car in gear (IGNITION KEY REMOVED)
4. If cluking is heard, check U Joints. wheel studs etc.
5. Check tail pipe, up to and including cat-converter for tightness. (Make sure they are cold).
6. If all else fails, look for basketball (sorry)
John P
FTroopChief
'05 Ltd Cpe