High idle on a 95' 1.8GL

[Naj]

Engine code is ABS.

I've not done any work on my car this month but suddenly it's idling quite high. Upon starting the engine, it idles at 1200rpm, give it some throttle and it will stay stuck at 2000-2200rpm. Changing up the gears usually reduces the revs but not always. I've changed the spark plugs and air filter as they where due anyway but did not resolve the idle issue.

Any help on what could be causing the issue?

Update: on closer inspection, I've discovered that the rubber (intermediate flange?) between throttle body and inlet manifold gasket has cracked and become completely detached, possibly caused by the extremely cold weather.

- does anyone know the part code for the intermediate flange and where online I could buy one
- is it safe to continue to drive with the throttle body simply resting on the inlet manifold without a proper enclosed seal?

[Leon R]

Happened to me over Christmas but GSF and ECP didn't stock them. I get discount at VW and got mine for £38. Mine is a 95 GL with an ADZ engine code so my part number may be different? 050129761H

Either way it seems to be a dealer only part.

As for is it safe, my car didn't start because the split was so bad but it would run if I held it down and got someone to crank it. Only once did it cut out when i hit a pothole, I suppose the jolt dislodged it enough not to get any fuel in.

[Naj]

Happened to me over Christmas but GSF and ECP didn't stock them. I get discount at VW and got mine for £38. Mine is a 95 GL with an ADZ engine code so my part number may be different? 050129761H

Either way it seems to be a dealer only part.

As for is it safe, my car didn't start because the split was so bad but it would run if I held it down and got someone to crank it. Only once did it cut out when i hit a pothole, I suppose the jolt dislodged it enough not to get any fuel in.

Thanks, mine is the same part number. VW are quoting me £57 for the part. On ebay for £25 but don't think it's a genuine VW part.

[Naj]

Installed the flange. It now idles as expected 800-1000 rpm and it no longer sticks at higher revs when the throttle is not engaged.