Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: kevin xf on 11 December 2013, 17:38:40

Title: V6 engine self revving
Post by: kevin xf on 11 December 2013, 17:38:40

Hi all.  Not been on here for a while that's a good thing  :y           Last couple of days I've noticed on tick over in neutral the revs start creeping up on its own and if I have the blower on the revs drop  ??? It's a 3.2 auto..

Title: Re: V6 engine self revving
Post by: Webby the Bear on 11 December 2013, 18:21:56

Are they jumping up and down as you idle?

Title: Re: V6 engine self revving
Post by: kevin xf on 11 December 2013, 19:26:24

no its ticking over and just slowly creeps up. it stops when i rev it.      if im sat still with the blower on in driver the revs suddenly drop then pick up drops every 10 seconds as if it going to stall. if i turn the blower/heater off it doesnt do it... im looking at selling now as its costing too much on fuel  6 mile round trip to work everyday   need a small run arounnd.

Title: Re: V6 engine self revving
Post by: 05omegav6 on 11 December 2013, 19:36:35

Sticky throttle or throttle position sensor would be my first guess :-\

These do idle higher when cold... probably best not to leave it idling in drive whilst it's warming up, though in six miles you won't warm up much more than the headlights :-\

Title: Re: V6 engine self revving
Post by: AndyStobbs on 11 December 2013, 21:05:03

Is that with your air conditioning on?

Title: Re: V6 engine self revving
Post by: kevin xf on 12 December 2013, 10:34:50

I've had it 2 years and have no idea how to turn air con off.   It make a difference when I turn the ECO on.      It doesn't do it when engine is cold only when hot ?! But only does it when heater blower is on. I've just had oil service and gearbox oil changed and breathers cleaned out AGIAN..

Title: Re: V6 engine self revving
Post by: RobG on 12 December 2013, 10:40:10

Quote from: kevin xf on 12 December 2013, 10:34:50

I've had it 2 years and have no idea how to turn air con off.   It make a difference when I turn the ECO on.       It doesn't do it when engine is cold only when hot ?! But only does it when heater blower is on. I've just had oil service and gearbox oil changed and breathers cleaned out AGIAN..

Turns the A/C off :)

Title: Re: V6 engine self revving
Post by: kevin xf on 12 December 2013, 19:50:18

Oh right ok.  Thanks for that.  Sounds like its air con related then?

Title: Re: V6 engine self revving
Post by: Webby the Bear on 12 December 2013, 20:13:34

Quote from: kevin xf on 12 December 2013, 19:50:18

Oh right ok.  Thanks for that.  Sounds like its air con related then?

It's perfectly normal...the revs increase as the engine drives the A/C compressor. When you hit the ECO button which turns A/C off...revs drop as the compressor is no longer being powered by the engine :)

Title: Re: V6 engine self revving
Post by: AndyStobbs on 12 December 2013, 22:31:42

Sounds fan related at first guess. Do your radiator fans work correctly, and on both speeds?

Title: Re: V6 engine self revving
Post by: kevin xf on 13 December 2013, 06:41:36

I know they kick in when the temp gets high. Just over 100   Normal temp is just below 80 but in traffic it slowly goes up to just over 100 then the fan kicks in.