Engine Shudder

[mrockm]

Hi Everyone,

I've been searching for an answer to my problem all morning and have come up short with an answer, hoping someone may be able to help.

I have a Xr6 turbo bf and was driving it a little rough, turned onto the highway and hit the accelerator (didn't plant it)... As soon as I was between 3000-4500 rev suddenly my engine started to shudder and I had a complete loss of power (revs dropped down), the car is still driving alright and the engine isn't shuddering now but the "check engine light" came on (but turned off a few hours later). It's happened a few times when I try and give it some, has anyone else had the same problem or does it have something to do with the rev limiter?

ANY HELP WOULD BE APPRECIATED AS I AM A NOOB!!

[drivnhrd]

sounds like the coils are failing under load. its a good thing the check engine light has come on, take it to a mech. where they can read the code for you

[mrockm]

Thanks for the quick reply, I'm booked in to the mechanic tomorrow to get this sH*t sorted out, once I find out what the problem is I'll put it up.

[johno]

Traction control kicking in?????? Do they have it? Sounds like it to me.

[Gasman]

Maybe valve springs, apparently can be a little soft and once you rev it out pretty hard can lead to a poor idle etc. Someone with more knowledge than me might be able to confirm or deny this.

Dunno if this can cause an engine light. Or dead cat .

Edited 14/11/11 06:41 PM by Gasman

[mrockm]

Thanks for the replies guys, when my mechanic checked the computer there was just an abnormal pressure reading that set off the check engine light and put the car into a limp mode, he said he adjusted some of the values and there doesn't appear to be any problems with the coils, plugs and or fuel injectors... He didn't mention anything about valve springs :|

My car has been going well since though..

[mrockm]

Btw yes the bf's have traction controls, dsc and ebd.

[Mr_4.0]

Sounds like boost cut

[drivnhrd]

good to hear it was solved, interesting to hear it was the valves,any idea what adjustments where done and what cause the issue in the first place?

[arronm]

Are you reading the same thread as me. Re read the posts carefully.