My 1998 1.8 jerks when climbing hills, suddenly had high rerves... So I had it checked and the mechanic said the problem was with the curburator, so i changed it.. now the car is iddling funny, its not uniform ... it is as if something is stuck somewhere in the flow system and it is still jerking when I am climbing hills. The car switched off by itself when I am at stop signs or approaching a hump. What could be the problem? Max in East London

SOURCE: my car has a hard jerking when slowing (like exiting from the highway).

I have a 07 Passat and my car does this when I use plus gas too often (which was almost every fill up because gas is too high!!!). I brought my car to the dealership for the same problem and I was told to alternate the plus and premium gas to keep a balance. It's almost like a knock and then the car jerks hard after being sluggish. Try alternating between the plus and premium gas and see if that helps.

SOURCE: my car smokes and drives slowly, climbs hills very

Check Ebay for Turbo. Does sound like turbo has gone bad. It has what is called a fluid bearing which is oil that is pumped in and around the impeller shaft. when the seals burn out it will smoke terrible and reduce power. Hope this helps and have a good day.

SOURCE: JETTA IS JERKING HAS CHECK ENGINE EPS AND ASR

Brake light switch needs to be replaced.

SOURCE: '99 VW Beetle just recently started jerking...

check ball joint strut mount when you jack up the car you shouldnt be able to lift tire if you can strut mounts are bad and check control arm bushings rear ones on front arms are usually coming apart

SOURCE: my car keeps jerking even though i have changed

Dirty throttle body, obstructed air flow/intake, HT leads, check the gaps on the spark plugs too, if you haven't already.