fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
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afternoon all,
i keep juddering sometimes when i am in 3rd at 20mph and trying to accelerate. i read on here the clutch is slipping, however the mechanic says clutch is fine.
i am too cheap to get the engine light tested, any ideas what problems it could be?
car: X10XE  V reg
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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stop being cheap and get it looked at?
its impossible to diagnose an engine fault over the internet! but heres a few suggestions:
1. missfiring
2. gearbox problems
3. no petrol
4. you might have square wheels?
[Edited on 02-09-2006 by Dave A]
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abdus
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Registered: 23rd Feb 06
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quote:
Originally posted by Dave A
4. you might have square wheels?
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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well thats a more likely cause than a slipping clutch
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abdus
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Registered: 23rd Feb 06
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
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lol, am off in a few mins to get the fault code read.
Spark plugs have been changed in January.
I have used redex regularly this year.
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Planty02
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Registered: 5th Mar 05
Location: Burslem, Stoke-on-Trent
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spark leads possibly?
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
User status: Offline
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UPDATE:
i went to get the fault codes read, i have got:
PO115 Coolant Sensor
PO130 Oxygen Sensor
PO335 Crankshaft Position Sensor
Haynes Manual has all this under Fuel Injection System.
all i can assume is that there is a short circuit or moisture in the wire hosing.
i will start by checking the fuses and cleaning the connections with Electronic Switch Cleaner.
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Warren G
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Registered: 14th May 06
Location: Kent
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checked coolant level? any present codes? a faulty cranksensor could make the car judder, but normaly the car just cuts out
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vaux-tech
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Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
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faulty crank sensor wouldnt make the car judder, however a knackered mass air flow meter would decrease power and possibly make it missfire too (although the 1.0 litres missfire on idle anyway!!) does it rev past 3-3500rpm? if it doesnt, my advice is that the air flow meter is fooked. common as a priest shitting in the woods
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vaux-tech
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Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
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get the tech2 on it and check the datalist display when the car is idling, get a vx mechanic to check the readings of coolant temp, egr valve readings, mass air flow reading and check the readings on the oxygen sensors too! hope this helps
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
User status: Offline
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****Update****
cleaned around the engine bay, however, i can't seem to get the plug for the Coolant Temp Sensor off.
any tips for that?
i reckon the Coolant Temp Sensor is the one playing up, as Oxygen/Lambda must be fine, it passed an MOT today.
Also, having driven it not for long and in cool evening air, the temp sits between 90-100 and the fan kicks in - the engine hasnt been driven for long!
Any further help would be great
Can't get to the Crankshaft Position Sensor.
[Edited on 04-09-2006 by fudleone]
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
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Oh and vaux-tech, i will check the air flow meter pronto tomorrow. is it a good idea to have the car running with it disconnected, to see any difference?
[Edited on 04-09-2006 by fudleone]
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by vaux-tech
faulty crank sensor wouldnt make the car judder
a faulty crank sensor bracket (usually a snapped one) will make the car judder very badly, as will the crank sensor if its in the wrong position in relation to the crank pulley
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
User status: Offline
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UPDATE: I disconnected the wiring to the Air Flow Meter, the car performed a lot better.
also, i read that the crankshaft position sensor regulates the spark plug firing timing.....so could this be the major cause of the misfire?
How do i get to the Crankshaft Position Sensor?
[Edited on 05-09-2006 by fudleone]
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ed
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Registered: 10th Sep 03
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It wont be the CPS. When they fail, the engine will stop working all together. Or it will work until it gets hot and cuts out.
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fudleone
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Registered: 22nd May 05
Location: Isleworth, Greater London
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thanks ed, so i guess the air flow meter should be changed. the car has done 37000 miles - does it seem right?
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ed
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Registered: 10th Sep 03
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Could be, might just need a clean out as they can get a bit oily. Your best bet is to get a Vauxhall test done on it rather than a garage one as the garage only gives you fault codes.
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