98 Tdi Occasional Jolting Total Loss Of Power.

[Brookydave]

For the past 3 days, when travelling along at a constant speed with very small throttle demand, my tdi has had an extremely sharp total loss of power, only for about 0.5sec as if either the throttle pot is duff or a fuel cut off relay (or similar) is dropping out. The are no indications on the dash post jolt, and even slipping my foot off the pedal cannot replicate the sharpness of the jolt. Any ideas please.

Thanks

Dave

[big_kev]

Mine exhibited identical problems, felt like someone had turned the engine off for a second.

Turned out to be the fuel cut off valve losing its feed.

 

Had other issues such as difficult starting, engine turns but doiesn't fire.

 

The culprit in the end was discovered to be the ignition relay no 109.

 

Changed this ( about

[NikpV]

For the past 3 days, when travelling along at a constant speed with very small throttle demand, my tdi has had an extremely sharp total loss of power, only for about 0.5sec as if either the throttle pot is duff or a fuel cut off relay (or similar) is dropping out. The are no indications on the dash post jolt, and even slipping my foot off the pedal cannot replicate the sharpness of the jolt. Any ideas please.

Thanks

Dave

 

 

so mk1 - is that the 90 or 110 bhp engine don't know mk1 very well?

Stick the details in your signature

[Brookydave]

90Bhp - signature updated as requested. Thanks