Cold running

[old cruiser]

Does anyone get this with their 2.2 Omega; when engine is cold and around the 1500 -2000 rpm, I get what feels like driving over rumble strips, what I have noticed is that if fuel gauge is sitting between empty and 1/4 it's worse strangely enough but once engine is warm everything is fine.
Cheers Pete

[JamesV6CDX]

sounds like a little misfire

check the obvious like plugs etc

[Taxi_Driver]

Nope, not got that on mine, sorry.

The only time my coughs a bit is when it first switches to lpg when its still warming up

[Chopsdad]

I think I know what you mean - is it worse when you go downhill - ie foot off the throttle?

Cos mine gets little bursts of speed - and MID readout on fuel consumption shifts from 9999 to 45 MPG & then back again to 9999.  Sometimes feels like the wheels are unbalanced?

May just be settling in while the Lambda sensor heats up - but there'll be an expert along in a minute to advise.  

[old cruiser]

Haven't noticed it worse downhill, but the strange thing is that with low fuel in tank i.e between empty and 1/4 is particularly bad after filling up it's vertually eliminated!, now beginning to wonder about the fule pump not coping with low fuel.
Cheers Pete

[Marks DTM Calib]

It might be worth popping the level sensor/pump assembly out the tank and checking the pickup pipe....

[rpont]

When was the fuel filter last changed? Since it's when the fule is low it's likely to be something to do with the pickup pipe/pump/filter area. Mine sort of rumbled when the EGR valve needed cleaning but the engine light came on as well then.

[old cruiser]

Good point Mark, certainly worth checking pick-up pipe, is it easy to access and remove do you know off hand? can't remember from the last time I changed the fuel filter some months ago.
Cheers Pete

[Auto Addict]

Does anyone get this with their 2.2 Omega; when engine is cold and around the 1500 -2000 rpm, I get what feels like driving over rumble strips, what I have noticed is that if fuel gauge is sitting between empty and 1/4 it's worse strangely enough but once engine is warm everything is fine.
Cheers Pete

I used to get this before I cleaned out the throttle body and all the breathers, never had it since.

[old cruiser]

Cheers AutoAddict might be the wya to go then, did you have any other running probs/ warning lights on with it at the same time before you did the clean out?
Cheers Pete

[Auto Addict]

Cheers AutoAddict might be the wya to go then, did you have any other running probs/ warning lights on with it at the same time before you did the clean out?
Cheers Pete

No.

[old cruiser]

Ok thanks for that mate
cheers Pete