Car bunny hops erratically and intimitently

[murph-16v 0]

Long story but a painful one - 500 down and it still has the problems. Had the car for 8 years (C 16v, 2.0, 1992). Throttle body/ air meter tubing all replaced last year and intact no leaKS. Regularly serviced.

The story- Left it in gear with the handbrake off whilst away for a month. On return, the battery was dead but got it started with AA. Whilst driving it felt like the brake was on as the accelerator had no effect, then it burst forward, with a smell of burning in car. AA said the clutch was gone, but the car drove fine when we took it out. Got it serviced, no problems with clutch but a VW code 00516 Throttle position error. Parked up 24 hrs, speedo flicked and did not start. Redirected to carb/ engine tuning garage as first garage failed to clear the VW error and suggested electrics. Second garage tuned the engine saying numerous faults were displayed, cleared 00516 error and battery, distributor and rotor not new but were fine. Worked perfectly for 24 hrs. Parked up for 24hrs. Failed to start, speedo flickering and idle setting had dropped from what it was set at. Car when driven is back to lurching, no acceleration and then bursting forward. Rear caliper/ brakes on passenger rear wheel smells of burning now- BRAKE problem maybe ??? What about battery and starting issues ?

[quicky1980 0]

could be a few things. check the brakes, most likely the rears have seized. if the brakes are ok, i would check the fuel delivery is good (ie is the fuel pump working fully).

[murph-16v 0]

Cheers for the reply- I will pass on the advise to the mechanic as hes says its like looking for a needle in haystack as laptop reports no faults. Second day in the garage and the third visit. Never seen the car like this so hopefully its fixed soon.

[murph-16v 0]

Spot on on your diagnosis.

Fuel pump is the problem. Not sure if its the pressure regulator or the pump but they are now looking in the right place. Forget the laptops, work in IT but in this case undetected by the computer.

Cheers

[quicky1980 0]

Spot on on your diagnosis.

Fuel pump is the problem. Not sure if its the pressure regulator or the pump but they are now looking in the right place. Forget the laptops, work in IT but in this case undetected by the computer.

Cheers

 

i had the same problem on a golf gti 16v. turned out to be the pump in the tank. funny thing was, if you hit the fuel tank with your palm hard it sorted it for a short time then end up bunny hopping again. think they cost about £30 to buy and dead easy to change

 

hope it helps

[corozin 0]

I thought you meant your "car bunny" was hopping erratically and intermittently (as demonstrated recently by Jeremy Clarkson)

LOL