car cuts out after journey

Just had my 1.8 clipper 1990 mot and it passed with flying colours apart from the emmisions which was corrected at the garage.

when i drive the car a short journey its fine but went on a run for 45 mins tonight at high speeds 60/70 mph and after 20 mins every time i came to a stop at lights etc the car just cuts out after slowing to 5/10 miles an hour.

i left the car 5mins on tick over at home after my big run out then took it out for 15 mins and it was fine at low speeds 30/40 mph

any ideas what could be causing this i have only owned the car a few days and not been out in it many times so im not sure if the emmisions correction is the problem.

thanks for any help tufty

Start by checking your pipes for a vacuum leak, Try asking the garage what they did to correct the emmisions too.

Been back to the garage, they have turned the mixture up on the carb said it was fine then it cut out the same loads of times everytime i stopped.
had to call the aa out he tried to do it by ear but failed, went back to garage they said they found a loose jet in carb said its fine now….its still the same….i need a vw specialist…im going to try vw rescue in wombourne i know the lads who work there so fingers crossed.

cheers tufty

yeah its strange some times that once people start messing about with stuff you can get all sorts of problems

Once warmed up, if you rev the engine then release the throttle, do the revs dip lower,  then return (perhaps even stalling and never reaching) to the idle speed?

Those symptoms are typical of rich mixture. If they adjusted it, its strange that it would now be out though. It could be that the system or control fuel pressure is so far out that they've made the adjustment to correct CO level at idle but its affected mixture elsewhere in the running envelope.

Been to a garage today and its a little better but still not correct they have advised me to buy a new weber carburetor !!

im not sure if it really needs a new carb or if it just needs a good mechanic to get the mixture correct

Did the garage have a proper look at the carb and deem it beyond economic repair, or are they just unsure on how to recondition/adjust it?

Can't really help further if its being looked at by a mechanic, after all, they have the car there, to run tests on, look at, try things etc and I'm hundreds of miles away on the internet with partial info etc.

You either need to trust the garage and let them fix it, or not pay any money to them.

cheers for your help
cheers tufty

i had the same prob, on 16v.

turned out to be the lift pump under the rear seat - dunno if you get them in carbs.