help! juddering and loss of power

**ksw46** · 07-03-2010, 09:14 PM

hi all found loads of other threads but noting on my car.... i have a 1.2 16v sxi 2000 w reg. only had it a couple of weeks now but noticed in 1st it sometimes had a sort of lag no power for 1-2 seconds then no problems.

today i was driving along stopped at lights and revs droped to 300-400 rpm i set of and it would of been quicker to get out and push it struggles rite through the revs and gears and now occasionally gets a momentary boost of power then struggles again, idles at 400 and often cuts out

any ideas?

i have read about disconnecting negative on battery, does this just reset ECU as i have just done this will reconnect in bout 30 mins and see if it makes any difference.

**Tom B** · 07-03-2010, 09:23 PM

I'd guess if your having idle problems... then you might need a new idle control valve, or give your current one a good clean

**ksw46** · 07-03-2010, 09:26 PM

cheers pal were is it and how do i do it etc.

**ksw46** · 07-03-2010, 09:33 PM

reconnected battery and no changed

**Tom B** · 07-03-2010, 09:37 PM

There ya go

**ksw46** · 07-03-2010, 09:38 PM

cheers fella will try that tommorow

**Tom B** · 07-03-2010, 09:49 PM

This should help too:

http://www.allcorsa.co.uk/forums/sho...rol-26190.html

mattyr · 08-03-2010, 08:39 AM

plus you should check all the oil breather pipes, give them a good clean and change nay thats perished. could also be the EGR valve sticking open. give that a clean and if i remember rightly it will have 2 coolant hoses going in to it so could be messy. its down the right hand side of engine between the coolant tank and the oil filter.

**ksw46** · 08-03-2010, 04:59 PM

changed icv today made no diffrence and then it decided to die on the motorway and now wont start

**ksw46** · 08-03-2010, 05:59 PM

just to update i have:

disconnected battery for 1/2 an hour
changed idle control valve

could it be the MAF sensor or crank sensor?

**ksw46** · 08-03-2010, 09:12 PM

**ksw46** · 09-03-2010, 11:13 AM

would really appreciate some help with this, gonna do some trial and error tonight as my mate has the same engine as mine in his shed so gonna try crank sensor and maf sensor any more suggestions

**ksw46** · 09-03-2010, 02:37 PM

no one helping

**Tom B** · 09-03-2010, 04:05 PM

Well you might aswell try the other sensors if you can get hold of them.

**lipsmoker** · 09-03-2010, 04:43 PM

Alright mate
Crankshaft sensor is normally the starting problem you have
The loss of power could be your headgasket but its unlikely and unlucky lol
Loss of power could be an unbalance air/fuel ratio causing it to fail to accelerating then that would be your mas air flow (maf) that controlls the airflow

it could also be a Fuel pump, Take to garage check for missfires

**ksw46** · 09-03-2010, 08:55 PM

Quote:

Originally Posted by lipsmoker

Alright mate
Crankshaft sensor is normally the starting problem you have
The loss of power could be your headgasket but its unlikely and unlucky lol
Loss of power could be an unbalance air/fuel ratio causing it to fail to accelerating then that would be your mas air flow (maf) that controlls the airflow

it could also be a Fuel pump, Take to garage check for missfires

dought its head gasket as experianced this before the coolant is a bit gunky but think its just old no mayo on oil filler or smoke etc.

is pumping fuel and got preasure in the rail

things changed:
idle control valve
Mass airflow sensor
crank sensor

disconnected battery to reset ecu

the reason it wouldnt start was due to cylinder 1 spark plug having a piece of metal welded to the electrode causing it to earth and flood.

dont need a garage to tell me its misfiring can hear it and it does so next i am thinking change plugs if that doesnt work il change coil pack

any suggestions welcome. cheers kyle

patmore · 10-03-2010, 11:41 AM

I would have said it sounds like a coil pack did the not put it on a diagnostic ?

**ksw46** · 10-03-2010, 12:27 PM

Quote:

Originally Posted by patmore

I would have said it sounds like a coil pack did the not put it on a diagnostic ?

did who?

patmore · 10-03-2010, 06:18 PM

Sorry mate ( have you had it put on a diagnostics machine ? )

**ksw46** · 10-03-2010, 10:13 PM

not yet im gunna try plugs and coil and if that fails il go see one of the lads at the vauxhall dealer i do work for and get it checked

07-03-2010, 09:14 PM	#1
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	help! juddering and loss of power hi all found loads of other threads but noting on my car.... i have a 1.2 16v sxi 2000 w reg. only had it a couple of weeks now but noticed in 1st it sometimes had a sort of lag no power for 1-2 seconds then no problems. today i was driving along stopped at lights and revs droped to 300-400 rpm i set of and it would of been quicker to get out and push it struggles rite through the revs and gears and now occasionally gets a momentary boost of power then struggles again, idles at 400 and often cuts out any ideas? i have read about disconnecting negative on battery, does this just reset ECU as i have just done this will reconnect in bout 30 mins and see if it makes any difference.

08-03-2010, 04:59 PM	#9
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	changed icv today made no diffrence and then it decided to die on the motorway and now wont start Last edited by ksw46; 08-03-2010 at 06:00 PM..

08-03-2010, 09:12 PM	#11
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	bttt

09-03-2010, 04:43 PM	#15
lipsmoker Gold Member Join Date: Jan 2010 Location: chorley,wigan Drives: Corsa b 1.2 SXI Gender: Posts: 981 iTrader: (0) Thanks: 61 Thanked 18 Times in 16 Posts	Alright mate Crankshaft sensor is normally the starting problem you have The loss of power could be your headgasket but its unlikely and unlucky lol Loss of power could be an unbalance air/fuel ratio causing it to fail to accelerating then that would be your mas air flow (maf) that controlls the airflow it could also be a Fuel pump, Take to garage check for missfires __________________ Check out the project >>Clicky << Ongoing Task - Engine Restoration

10-03-2010, 10:13 PM	#20
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	not yet im gunna try plugs and coil and if that fails il go see one of the lads at the vauxhall dealer i do work for and get it checked __________________ If it can't be fixed with a hammer its not worth fixing. y girlfriend just came home crying her eyes out asking me to console her so i smashed her in the face with my playstation. The Project

07-03-2010, 09:23 PM	#2
Tom B Gold Member Join Date: Nov 2009 Location: St. Helens Drives: Corsa B 1.0l 12v Gender: Posts: 462 iTrader: (0) Thanks: 26 Thanked 20 Times in 20 Posts	I'd guess if your having idle problems... then you might need a new idle control valve, or give your current one a good clean

07-03-2010, 09:26 PM	#3
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	cheers pal were is it and how do i do it etc.

07-03-2010, 09:33 PM	#4
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	reconnected battery and no changed

07-03-2010, 09:37 PM	#5
Tom B Gold Member Join Date: Nov 2009 Location: St. Helens Drives: Corsa B 1.0l 12v Gender: Posts: 462 iTrader: (0) Thanks: 26 Thanked 20 Times in 20 Posts	There ya go

07-03-2010, 09:38 PM	#6
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	cheers fella will try that tommorow

07-03-2010, 09:49 PM	#7
Tom B Gold Member Join Date: Nov 2009 Location: St. Helens Drives: Corsa B 1.0l 12v Gender: Posts: 462 iTrader: (0) Thanks: 26 Thanked 20 Times in 20 Posts	This should help too: http://www.allcorsa.co.uk/forums/sho...rol-26190.html

08-03-2010, 08:39 AM	#8
mattyr Member Join Date: Jun 2009 Location: Leeds Drives: Corsa b Sport 1.4i 16v 2000 Gender: Posts: 396 iTrader: (0) Thanks: 1 Thanked 22 Times in 22 Posts	plus you should check all the oil breather pipes, give them a good clean and change nay thats perished. could also be the EGR valve sticking open. give that a clean and if i remember rightly it will have 2 coolant hoses going in to it so could be messy. its down the right hand side of engine between the coolant tank and the oil filter.

08-03-2010, 05:59 PM	#10
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	just to update i have: disconnected battery for 1/2 an hour changed idle control valve could it be the MAF sensor or crank sensor?

09-03-2010, 11:13 AM	#12
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	would really appreciate some help with this, gonna do some trial and error tonight as my mate has the same engine as mine in his shed so gonna try crank sensor and maf sensor any more suggestions

09-03-2010, 02:37 PM	#13
ksw46 Gold Member Join Date: Mar 2010 Location: rochdale, gtr manchester Drives: 1.2 sxi, silver Gender: Posts: 345 iTrader: (0) Thanks: 24 Thanked 18 Times in 16 Posts	no one helping

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09-03-2010, 04:05 PM	#14
Tom B Gold Member Join Date: Nov 2009 Location: St. Helens Drives: Corsa B 1.0l 12v Gender: Posts: 462 iTrader: (0) Thanks: 26 Thanked 20 Times in 20 Posts	Well you might aswell try the other sensors if you can get hold of them.

10-03-2010, 11:41 AM	#17
patmore Member Join Date: Mar 2010 Location: Essex Drives: corsa b Gender: Posts: 217 iTrader: (1) Thanks: 24 Thanked 5 Times in 5 Posts	I would have said it sounds like a coil pack did the not put it on a diagnostic ?

10-03-2010, 06:18 PM	#19
patmore Member Join Date: Mar 2010 Location: Essex Drives: corsa b Gender: Posts: 217 iTrader: (1) Thanks: 24 Thanked 5 Times in 5 Posts	Sorry mate ( have you had it put on a diagnostics machine ? )

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