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Author Car revving on its own?
Jamie Walby
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Registered: 15th Nov 04
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19th May 05 at 08:02   View User's Profile U2U Member Reply With Quote
Why would it be doing this? It happens at traffic lights/junctions etc! It even revs when it isnt in gear and the handbrake is on! Normally it ticks over at around 1000rpm but its going up to around 3000rpm?

Why would it be doing this?

cheers
ed
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Registered: 10th Sep 03
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19th May 05 at 08:03   View User's Profile U2U Member Reply With Quote
ICV or Vacuum pipe....
Skinz
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Registered: 15th May 03
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19th May 05 at 08:04   View User's Profile U2U Member Reply With Quote
my gsi used to do this, i first thought it was IACV which i cleaned but no difference, they i changed the HT leads which made a difference for a while, but then it came back, eventually i think it was down to a split fuel tank causing the fuel system to depressurise.

Could be any number of things, inluding them above
Edd
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Registered: 8th Nov 04
Location: Glasgow
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19th May 05 at 08:06   View User's Profile U2U Member Reply With Quote
any eml on?
Skinz
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Registered: 15th May 03
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19th May 05 at 08:07   View User's Profile U2U Member Reply With Quote
also inductions kits can cause it too
Jamie Walby
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Registered: 15th Nov 04
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19th May 05 at 08:07   View User's Profile U2U Member Reply With Quote
The strange thing is, it only does it on my way home from work! Never on my way to work in the morning!

I got a feeling this could be expensive!

I dont have an induction kit!

[Edited on 19-05-2005 by Jamie walby]
Skinz
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Registered: 15th May 03
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19th May 05 at 08:08   View User's Profile U2U Member Reply With Quote
when the engine is cold then just like my gsi used to
Edd
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Registered: 8th Nov 04
Location: Glasgow
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19th May 05 at 08:08   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Edd_20
any eml on?
Jamie Walby
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Registered: 15th Nov 04
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19th May 05 at 08:10   View User's Profile U2U Member Reply With Quote
If by eml you mean engine managment light......no, nothing is coming on!
Edd
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Registered: 8th Nov 04
Location: Glasgow
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19th May 05 at 08:16   View User's Profile U2U Member Reply With Quote
will most probably have to check the diagnostics though just to rule that out can you do the paper clip test?
Skinz
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Registered: 15th May 03
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19th May 05 at 08:21   View User's Profile U2U Member Reply With Quote
its paper clip day on here today
Edd
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Registered: 8th Nov 04
Location: Glasgow
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19th May 05 at 08:23   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Skinz
its paper clip day on here today


not for me
Joff
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Registered: 17th Oct 00
Location: Cambridgeshire
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19th May 05 at 08:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Skinz
also inductions kits can cause it too


How?
L33 LEG
Banned
Registered: 6th Jan 03
Location: Blackburn . Drove: Dimma Saxo VTR
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19th May 05 at 08:38   View User's Profile U2U Member Reply With Quote
my saxo used to do this all the time. i could never be arsed to find out why tho
ROBSTA
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Registered: 29th May 03
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19th May 05 at 10:40   View User's Profile U2U Member Reply With Quote
clean the potentionmeter or map sensor, sorted my random revving problems on mates corsa and my 106
James
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Registered: 1st Jun 02
Location: Surrey
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19th May 05 at 10:41   View User's Profile U2U Member Reply With Quote
Id say 75% likely to be the ICV, VERY common on corsas.
Skinz
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Registered: 15th May 03
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19th May 05 at 12:21   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Joff
quote:
Originally posted by Skinz
also inductions kits can cause it too


How?


can let in too much air/hot air causing the IACV to over compensate

[Edited on 19-05-2005 by Skinz]
Andrew
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Registered: 5th May 04
Location: Skoda Octavia Estate, Ford Puma
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19th May 05 at 12:37   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by L33 LEG
my saxo used to do this all the time. i could never be arsed to find out why tho


Mine does it too I couldn't give a wank Not as if it's stalling all the time like my 106 did Cost me loads so sold it as broke in the end
stuartmitchell
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Registered: 24th Apr 04
Location: Kirkliston, Edinburgh
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19th May 05 at 14:31   View User's Profile U2U Member Reply With Quote
my pug did this after I cleaned out the throttle body It idled at 3k then the guy down the road had to reset my potentiometer (shite name for idc)

however my cars french so take no notice but it sounds like the idle control valve to me so..

take it out, clean it and put it back in
Jamie Walby
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Registered: 15th Nov 04
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19th May 05 at 14:43   View User's Profile U2U Member Reply With Quote
The thing is, it doesnt do it all the time! Only seems to do it on my way home from work!
Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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19th May 05 at 14:46   View User's Profile U2U Member Reply With Quote
Its the overtime fairies trying to get you to stay with them for longer .
Jamie Walby
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19th May 05 at 14:56   View User's Profile U2U Member Reply With Quote
sassyminx
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Registered: 10th Jan 04
Location: Hartlepool Drives: Cossie
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19th May 05 at 15:18   View User's Profile U2U Member Reply With Quote
took me about 500 quid and a lot of tryin to figure this out on my GSi, changed IACV, throttle body inlet, EGR valve, checked all round for leaks and still didnt get back to the bottom of the problem

Vaux were no help either


hope its something simple mate cos theres so many problems it COULD be
Jamie Walby
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Registered: 15th Nov 04
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19th May 05 at 15:30   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by sassyminx
took me about 500 quid and a lot of tryin to figure this out on my GSi, changed IACV, throttle body inlet, EGR valve, checked all round for leaks and still didnt get back to the bottom of the problem

Vaux were no help either


hope its something simple mate cos theres so many problems it COULD be


Er thanks
sassyminx
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Registered: 10th Jan 04
Location: Hartlepool Drives: Cossie
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19th May 05 at 15:48   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Jamie walby
quote:
Originally posted by sassyminx
took me about 500 quid and a lot of tryin to figure this out on my GSi, changed IACV, throttle body inlet, EGR valve, checked all round for leaks and still didnt get back to the bottom of the problem

Vaux were no help either


hope its something simple mate cos theres so many problems it COULD be


Er thanks


i just hope you have it easier than i did

poss things it could be are....

IACV
AFM- is it an ecotec or pre ecotec??
Throttle body inlet
air leaks around engine
Ecu problem
Throttle potentiometer
EGR valve


reason i got a dub instead


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