causes that make a car buck when coasting

[steveo3002]

ive got a golf g60 , it bucks when easing off for traffic etc , so car at speed throttle closed , bucks until i dip the clutch

im a keen tinkerer and ive checked all i can think off , ajusted this n that and cant get rid of the bucking

any suggestions for further trouble shooting (its too old for plugging in for diag )

[Locknut]

Play in the engine mounts?

[one eyed mick]

Change down at least one gear!

[benters]

does it have a engine stabiliser bar . . . like the old classic mini's ???

[steveo3002]

doesnt have a stabilser bar

seems to do it regardless of the gear its in...is the same symptoms as grandad driving along in 5th gear at 5mph though

[benters]

sounds to me like something is worn, engine mounts as was suggested is worth a look, i am suprised it doesnt have a stabilizer bar as this is often used to prevent manifold to exhaust system breakage as i am sure you know. I dont know your car model very well, but is the engine etc on a subframe and where it fits the body, could these pads need replacing ??

[steveo3002]

has fresh mounts ...the subframe bolts directly to the body

[cptsideways]

A G60 is 4wd right?

You have odd tyres & or a locked diff somewhere in the system

[steveo3002]

its 2wd

it does it however i close the throttle , ive not driven anything else that you cant snap the throttle shut on ? maybe get the odd jolt if it was high revs but mine bucks like crazy

i cant drive around it ..only by dipping the clutch

[benters]

its the rallye thats 4wd the G60 is supercharged . . .have i got that right ? either way nice motor

[steveo3002]

yeah the rallye is 4wd and wide body ..mines same engine but looks like a gti

[nsa]

If I understand correctly it bucks when off throttle but still revving and sorts itself out when the clutch is depressed and it returns to idle. Could it be related to the fuel supply? Fuel pump relay?

[ringram]

yeah id go with fueling or spark issues.
look at plugs, wires etc first

then injectors or carb, maybe their is a partial block etc.

[Pumaracing]

Sounds fairly simple. The overrun fuel cutoff isn't working correctly and keeps injecting fuel on some sort of sporadic basis until the revs drop below the cutoff rpm limit (usually about 1800 rpm) which is what happens when you dip the clutch and let it return to idle.

Next please.

[SuperchargedVR6]

What is 'bucking'?

I seem to remember 1st and 2nd gear being pretty short on the G60, so you can get a bit of drivetrain shunting coming on and off very light throttle openings in traffic, in 1st and 2nd.