Hi all, I am new to the forum, having previously had a scirocco which I loved but couldn't pour any more cash into, I bought a humble mk3 1.4 cl, k reg for a daily driver to feed my vw habit until I can afford something more whizzy.

It is hesitant accelerating when cold, it starts ok and idles fine, but between 1000 revs and about 1700 when pulling away, the revs suddenly drop even with my foot hard to the floor. It is pretty much ok when warmed up.

So far I have changed:

*leads (although the replacements were not new but in better nick than the originals)
*plugs
*distributor cap and rotor arm
*the temp sensor near the thermostat
*cooling fan switch
*fuel filter
*I can't see any problems with any of the vacuum pipes.

*I also put on a new catalytic converter in case this was breaking down, although I didn't change the lambda probe

*I have cleaned out the throttle body which had oil in it, I assume that the engine had been overfilled and oil was being blown up into the cover from a hose on top and also taken apart the pressure regulator (the thing with the weird rubbery condom membrane) which looks ok - couldn't see any leaks or holes.

Getting really puzzled. The car has done 78k, a non vw garage said there were no error codes when they checked it.

Any ideas gratefully received as I want to make sure it is ok as I will soon be selling to get money for next vw project.

Rob