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Old 6th Feb 2010, 09:51   #1
frakker
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Car Juddering Under Acceleration

My VW Polo ('99 S Reg 1.4) seems to have developed a problem this morning whereby it judders when accelerating, more so when the revs are between 15-20k.

Was ok until I recently filled up with £10 worth of fuel from an independent garage down the road (which I've never used before), so wondering if it might be something to do with that, or perhaps something else?

Seems to be ok once the revs are up. But does feel as though it might cut out when stationary and trying to pull away.

AGNB - That's bang out of order.
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Old 6th Feb 2010, 09:53   #2
( |-| |2 ][ $
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I hope you mean 1.5 to 2k. Even then you shouldn't be fully loading the engine below that rev range.

Check the air filter first, does it idle okay, and fault lights?
Could well be bad fuel. I think I trip to Shell and a full tank might be in order.

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Old 6th Feb 2010, 09:57   #3
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Sounds like an ignition related issue to me. Does it go away when the car warms up? A change of plugs and/or leads might be in order

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Old 6th Feb 2010, 09:59   #4
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Originally Posted by ( |-| |2 ][ $ View Post
I hope you mean 1.5 to 2k. Even then you shouldn't be fully loading the engine below that rev range.

Check the air filter first, does it idle okay, and fault lights?
Could well be bad fuel. I think I trip to Shell and a full tank might be in order.
It does idle ok and starts fine no problems. Pulling away seems to be a massive chore though and when popping it into the next gear it judders some more. Difficult to get it above 40mph at the moment.

Going to take it to a local mechanic in a few hours for him to have a look at. Guess it could be one of many things, but I might try topping it up with some fuel later.

AGNB - That's bang out of order.
Last edited by frakker; 6th Feb 2010 at 10:17.
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Old 6th Feb 2010, 10:00   #5
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Sounds like an ignition related issue to me. Does it go away when the car warms up? A change of plugs and/or leads might be in order
I don't know. Wasn't present when I started it this morning from cold. Haven't had the chance to try it again yet. The problem did arise when it the engine was up to temperature.

Spark plugs were changed last April.

AGNB - That's bang out of order.
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Old 6th Feb 2010, 10:14   #6
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I hope you mean 1.5 to 2k. Even then you shouldn't be fully loading the engine below that rev range.
Why not?
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Old 6th Feb 2010, 10:27   #7
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Coil pack?
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Old 6th Feb 2010, 10:35   #8
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Could well be worn engine mounts.

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Old 6th Feb 2010, 10:37   #9
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Coil pack?
Doubt its a coil pack as its an older model-



Could be dirty fuel, plugs or leads. Might also be worth removing the distributor cap and cleaning the contacts. Number 2/4 here
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Old 6th Feb 2010, 10:43   #10
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Reckon it might be worth putting some more fuel in before taking it to the garage a few miles down the road, to see if that might be the issue?

AGNB - That's bang out of order.
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Old 6th Feb 2010, 11:00   #11
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Apply hand brake, first gear, start to lift clutch. If it judders as the clutch starts to bite, start crying and go suffer a £1000 bill for a new DMF and Clutch.
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Old 6th Feb 2010, 11:01   #12
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Apply hand brake, first gear, start to lift clutch. If it judders as the clutch starts to bite, start crying and go suffer a £1000 bill for a new DMF and Clutch.
Oh God. I look forward to trying this out in a minute.

AGNB - That's bang out of order.
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Old 6th Feb 2010, 12:15   #13
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Apply hand brake, first gear, start to lift clutch. If it judders as the clutch starts to bite, start crying and go suffer a £1000 bill for a new DMF and Clutch.

LOL in a 1.4 petrol - No DMF and new clutch is about £250 - £300

Coil pack, Distributor cap, HT Leads, could be damp due to the recent weather - get a can of WD40 and spay these


Last edited by Thebug; 6th Feb 2010 at 12:18.
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Old 6th Feb 2010, 12:42   #14
Lopéz
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Apply hand brake, first gear, start to lift clutch. If it judders as the clutch starts to bite, start crying and go suffer a £1000 bill for a new DMF and Clutch.
It's a 1999 Polo, it hasn't got a dual-mass flywheel.


In a collision, there you are. In an explosion, where are you?
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Old 6th Feb 2010, 13:15   #15
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Mechanic man reckoned he knew straight away what the problem was. Going in for a closer inspection on Tuesday and he suggests it may just be a simple plug and lead change. Hope that's all it is...

AGNB - That's bang out of order.
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Old 6th Feb 2010, 13:57   #16
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Apply hand brake, first gear, start to lift clutch. If it judders as the clutch starts to bite, start crying and go suffer a £1000 bill for a new DMF and Clutch.
Haha, what?

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Old 6th Feb 2010, 17:07   #17
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A quick google showed some MK3 Polos used a DMF - if this particular model doesn't have one, then sorry, I was wrong and there is nothing to worry about in that respect
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Old 6th Feb 2010, 17:19   #18
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Quote:
Originally Posted by Howard View Post
Sounds like an ignition related issue to me. Does it go away when the car warms up? A change of plugs and/or leads might be in order
I'm going with this for now, the fuel is probably not coincidence, it's harder to ignite (higher octane maybe), and so has highlighted an existing ignition system issue.


touch: cannot touch `this': Permission denied
Last edited by BigglesPiP; 9th Feb 2010 at 19:28.
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Old 9th Feb 2010, 18:45   #19
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I hate not seeing a thread through to conclusion. So...

One distributor cap, one rotor arm, one lead and four spark plugs later and the car is back to normal again.

Though I am £90 lighter in my pocket now.

AGNB - That's bang out of order.
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Old 9th Feb 2010, 19:24   #20
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Thought so

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