Idling problem

[braco]

I have my mk2 for about 5 years,motor start to be tied (270000km) and i dicide to put 2.0lt. Motor in it. All job been done only i have problem with idling, i instoll new temp. Sensor (blue one) new idling reg. But still rews going up and down (1000 - 1300).i used 2.0 bottom and head from 1.8, down pipe and catal.converter from 2.0lt. I had this problem before i redone motor. If any body can give me advice what i have to check i appreciate.

Thanks braco

[VwJunkie]

Hey mate,

Sounds like your ISV might need a clean. Get yourself some carby cleaner and throttlebody spray and that should do the trick!

[velly_16v_cab]

yep, what he said above

the connector on the back of my ISV came off two days ago causing be to brack down on the way home from work...spotted it, plugged it back in and ran fine.

[MK2 GTI]

yep, what he said above

the connector on the back of my ISV came off two days ago causing be to brack down on the way home from work...spotted it, plugged it back in and ran fine.

I think your plug is missing the metal clip that holds it on.

[velly_16v_cab]

I think your plug is missing the metal clip that holds it on.

yeah it is bro...i blame the person who last worked on it TBH

[braco]

thanks gays i found broken wire on back of ISV, now idling OK.