Car stalling problem

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14 Jan 2004
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Reading, UK
Hi all, I realise this isn't a mechanic's forum but there are a lot of knowledgeable people floating around these boards and I thought I'd give it a shot here first before moving on to anywhere more purpose-built.

I have a '97 VW Polo 1l; just under 94k on the clock and generally good condition for its age.

Recently I've been having a problem whereby whenever I slow down to a stop and, with the clutch pedal fully pressed, the car will stall. Occasionally it will shudder and recover itself and not stall, but 99% of the time it will simply cut out for no good reason.

A friend suggested the engine breather might be blocked (and it was) so I had that cleaned but to no effect; the problem still remains. For some reason, this problem only occurs when the engine is at it maximum normal temperature; it will not occur on a short hop with a cold engine, but after I spend 10 minutes on the motorway it will do it when I hit the suburbs where there is traffic. Someone else suggested something may be dragging the engine to a stop, but I have no idea what that could be, and typing 'engine stalling' into google is hardly productive.

I recently had an exhaust replacement (my old one literally exploded, brilliant pics), and I was wondering if this could in any way be related (but what little I know about cars make me think not)?

Thanks in advance for any advice you may be able to provide.
 
my polo of the same year used to do this....it used to dip the accelerator though and stop itself totally stalling...

i got rid
 
definately check. if theyre dead, it disconnected, it wont idle.

even something like the dipstick tube has to be intact, otherwise its an air leak and the idle suffers
 
Possibly a split in the rubber airbox elbow.

But it's most likely a clogged up Idle Control Valve (ICV, or sometimes called an idle stepper motor). Some googling might bring up something about where it is on your car and how to get it off/clean it.
 
Have you changed the air filter itself?

My car would do this when I first got it, although it was more of a 'drop to 500 RPM then almost stall'

A new air filter sorted it out fine.
 
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