Violent Shake

[Toecutter]

Hey guys,

I am having an occasional problem in my XRT.

02 BA xrt, aftermarket cooler, valve springs, CAI and tune.

Every once and a while when I start my car and change from PARK to REVERSE or DRIVE, the whole car violently shakes and the revs drop and sounds like it's about to stall. I try to put it back to PARK and it continues with it's nonsense. I quickly turn it off and when I restart it, everything is fine.

It has done it a handfull of times and only does it a couple of times per week, completely random.

It has been running a bit rough lately, sounds like a miss on idle, but cruises fine.

I recently replaced the coils too, hasn't fixed it.

Trying to fix it all up to sell it!

Any help appreciated, thanks.

[Kv!]

Change the oil ?

[Toecutter]

Are you suggesting I change the oil, or asking if I have? haha.

I have had the car serviced about 2000k's ago.. New oil.

[Banned1]

did you change the gearbox oil ? had an issue similar years ago, was the TPS acting up !

Edited 08/11/10 08:01 AM by rab

[ARVO]

Try your o2 sensor mate

[Banned1]

will the car log fault codes ?? check those ?

[Toecutter]

Thanks for the reply guys.

After the last service my mechanic did say that the air/fuel mix was showing way out on his computer, I just put it down to having a big induction system and bigger than standard injectors.

So you think it could be the 02 sensor or TPS?

I might try them both, the cheaper one first..

[Guest XR09]

or crank sensor on its way out.

[Toecutter]

Thanks guys.

Is there any way which I can determine if it is the 02 sensor, crank sensor or TPS?

Or will I just have to replace each and wait until the problem stops..

[Toecutter]

Hmm, the problem did go away for a while, has started up again in the hot weather.

Doing it every few times that I start the car, then I restart it and it's fine..