lumpy idle....

[SuperMario]

with the blue temp sensor removed it idles perfectly, once plugged back in it get lumpy and sometimes cut out! any ideas??

[sinister polo]

i have the same problem!
iv replaced the blue censor as well!

[SuperMario]

its a pain aint it! yea mines a vw sensor aswell, ive had a few problems with my dizzy recentry but i think thats sorted now, it use to breakdown under load. but ic it runs fine when d/c its gotta b firing up ok surely?

[cheys03]

My money's on lambda. Both times I've seen a (later) proven duff lambda idle got lumpy once the engine was warm and it would struggle for revs, usually then die.

As I understand it, once the blue temp sendor is unplugged the ECU ignores engine sensors, increases fuel and no longer advances timing with revs to protect the engine.

[DKnight]

yup sounds like lambda as above, look for a different blue temp sender aswell as the new ones are notorious for being dodgy