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Author Topic: Juddery and Lumpy on Idle Please Help  (Read 5066 times)

Offline wardygt

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Juddery and Lumpy on Idle Please Help
« on: November 09, 2014, 11:41:37 am »
Can anyone help, I have a gt tdi mk5 and the engine runs fine, but on idle the engine is very juddery and lumpy, I was told it was the maf sensor and got that replaced but it has made no difference.
what else could it be?
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #1 on: November 09, 2014, 03:10:43 pm »
also I have disconnected battery for 30mins but didn't make any difference
anyone know what it could be?
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Offline StuF

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Re: Juddery and Lumpy on Idle Please Help
« Reply #2 on: November 09, 2014, 03:19:48 pm »
Could be the dual mass flywheel?
How many miles has it covered?
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #3 on: November 09, 2014, 04:20:19 pm »
100k

this is exactly what it sounds like just found it on youtube
just had cambelt done and water pumper also
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Offline jaye2992

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Re: Juddery and Lumpy on Idle Please Help
« Reply #4 on: November 09, 2014, 10:24:41 pm »
When was the egr valve last cleaned?
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Offline Golf_GT_TDI

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Re: Juddery and Lumpy on Idle Please Help
« Reply #5 on: November 09, 2014, 11:08:32 pm »
fault code scan?
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #6 on: November 10, 2014, 10:46:05 am »
Quote from: jaye2992 on November 09, 2014, 10:24:41 pm
When was the egr valve last cleaned?
last week I thought that was the problem but hasn't made a difference  :sad1:
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #7 on: November 10, 2014, 10:47:25 am »
Quote from: Golf_GT_TDI on November 09, 2014, 11:08:32 pm
fault code scan?
maf sensor but that has been changed but made no difference
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Offline jaye2992

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Re: Juddery and Lumpy on Idle Please Help
« Reply #8 on: November 10, 2014, 09:50:45 pm »
Quote from: wardygt on November 10, 2014, 10:46:05 am
Quote from: jaye2992 on November 09, 2014, 10:24:41 pm
When was the egr valve last cleaned?
last week I thought that was the problem but hasn't made a difference  :sad1:

Used to have an A3 with the tdi engine in and mine did this badly and even used to stall. Think what i did was use aload of injector cleaner, new fuel filter and egr delete..... after that it was spot on and never did it again.
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #9 on: November 11, 2014, 04:27:34 pm »

[/quote]

Used to have an A3 with the tdi engine in and mine did this badly and even used to stall. Think what i did was use aload of injector cleaner, new fuel filter and egr delete..... after that it was spot on and never did it again.
[/quote]
thank you
I will try that later
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #10 on: January 27, 2015, 01:03:32 pm »
Hi it is in the garage it is NOT
-Injector loom
-Dirty injectors
-Maf senor
-EGR
-ECU issue
-Fuelling issue

It is becoming a mystery and is having all these different tests but still is the issue is not resolved

Does anyone know what else it could be?


 
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Offline john87

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Re: Juddery and Lumpy on Idle Please Help
« Reply #11 on: January 28, 2015, 06:58:34 pm »
PCV valve possibly need replaced? I'm sure this would cause lumpy/poor idle..
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Offline boustie

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Re: Juddery and Lumpy on Idle Please Help
« Reply #12 on: January 30, 2015, 08:36:57 pm »
Are there any faults in it ?
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Offline jason_rmh

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Re: Juddery and Lumpy on Idle Please Help
« Reply #13 on: January 30, 2015, 08:52:23 pm »
Quote from: john87 on January 28, 2015, 06:58:34 pm
PCV valve possibly need replaced? I'm sure this would cause lumpy/poor idle..
TDIs don't have a PCV do they?

My TDI is a bit lumpy. One thing to check is the timing torsion value and injection quantities using vcds.
If injection quantities are out it could pin point the issue to a particular cylinder.
I'm about to start checking this on mine.

Jas
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Offline wardygt

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Re: Juddery and Lumpy on Idle Please Help
« Reply #14 on: February 04, 2015, 12:50:01 am »
Quote from: boustie on January 30, 2015, 08:36:57 pm
Are there any faults in it ?

no faults, they are saying

all fine starting from cold until say 2mins (maybe less) of running the lumpiness starts
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