Here's one for the Books! This past Monday night, I went to start my XF, and heard a very loud backfire, then it tried to stay running and quit. It's been at my local Chrysler dealer ever since. Today, (Friday) they call me and say "What did you do to this car?, The intake manifold is in two pieces!" They thought it was a M.A.S sensor on Wednesday, but that didn't work... Now we know why. The thinking right now is...The M.A.S. sensor went bad, caused the backfire and the explosion was enough to split the intake in two... I'm soooo bummed. I'll let you all know what happens next.

PS. I read in some thread somewhere, about a an intermittent engine miss on manual trans XF's This had happened before this obvious problem...maybe a M.A.S. sensor on the way out.

M.A.S. Sensor= Mass Airflow Sensor- just in case someone doesn't know the term.

9/21/05 update- While the mechanic was working on the car,,, he put my XF up on a lift and scratched the hood

 

Was this after it was sitting for a while? Mine skips/backfires after sitting because of the battery going low.

 

That sux man, I hope you get your car back soon.

 

It was sitting about 3 days, battery was fine though. I'm supposed to hear on Monday the eta on the intake plenum/manifold.

 

Saskins,
Thanks, I appreciate the sentiment...I miss it already.

 

my wife is picking ours up from a garage this morning, been shut up for two weeks while we were on holiday...what a time to read this. Hope you back on the road soon cross1, trust warranty is covering yours.

 

9/21/05 update- While the mechanic was working on the car... he put my XF up on a lift and scratched the hood, so now I have to wait until they paint the hood. Is this sounding like lemon law or just a comedy of errors!!!

 

I don't think that scratching the hood would come under the lemon law in any state that I know of. Stupid mechanic, yes...lemon law, not even relative.

 

Yeah... I knew that.

 

Picked up the XF Friday night runs and looks great. It seems that the MAS caused the backfire and blew a hole in the intake manifold. Dealer replaced the intake manifold and replaced the MAS sensor. As far as the scratched hood, dealer replaced the hood with one from "stock" more like a XF that was in stock. Hopefully there will be no more problems.