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Discussion Starter · #21 ·
Well, just got the car back from the specialist, and had the following done:
1) Throttle Body Clean & Align
2) Air Intake Hose Replaced
3) Crankshaft Speed Sensor Replaced

The car now idles smoothly, the revs don't hunt and the car feels a little more nippy - this could be a placebo effect. And now that the revs don't hunt at idle, the car no longer shakes or stalls itself. In addition, I had no juddering/lumpy acceleration problems on the way back, however this fault was intermittant, and I'll report if it appears again this week.
 

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Discussion Starter · #22 ·
Even though my problems seem to have been resolved, I'm going to change the Coolant Temp Sensor soon anyways, as that may be the cause of my warm start issues - I've not tested to see whether this problem is still present.
 

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Heya Buddy,

Hope your 'rpairs' fix your car....

I had a few of the same problems last week - was out driving and the car lost all performance and 'spluttered' whenever reving....

I got the car home and called out the good old AA! - who plugged in their 'state of the art' laptop that couldn't find any faults! [:cool:]

Was told it could be a 'fried' ECU, fuel filter blockage, fuel/air ratio incorrect, spark plug/lead dis pack faliure!!!!

Anyway, took it to a local garage (well 'limped' there) and straght away pointed to the MAF, they plugged it in and confermed it - ?100 fix & all sorted - best performance I have ever had & better fuel economy!

Amazing how the MAF can 'mash' your motor!
 

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Discussion Starter · #24 ·
Just an update guys.

The car no longer cuts out when coming to a stop, nor does the engine knock/judder/struggle whilst accelerating.

However, I'm still having warm idle issues.

The car idles smoothly with constant revs when the enine is cold. However, when the engine has warmed up, the revs will alternate by 50RPM at idle, the car vibrates, and you can hear the lumpy idle from the outside. Giving it a little gas will erradicate the lumpy idle, but it will return once you off the gas. Now, the VW specialist said they have cleaned out and re-adapted the throttle body (this was last night), so this is probably not the cause. As I say again, this ONLY happens when the engine is warmed up, never when it's cold, so does anyone have any ideas?
 
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