2.0 16v intermittant misfire

[F2 Stu]

Picked up a little gremlin in the past few weeks

Started off with it missing at 3k rpm - warmed up and then dissapeared - perfectly fine after that.

Did a not so clever thing by jetting the engine bay out last monday to suss out an oilleak ran like crap upto 4k rpm (no ****) - dryed out after 10 mins - ran fine thereafter.

Jumped in it tonight after work, and it started missing @ idle, 2.5k, 4k but pulled like it should - warmed up and all was fine

Its done 53k and apart from the ovbious service items is there anything else I should be looking out for? did a search which throwed up it could be a multitude of expensive sensors and I've not got Vag-Com.

 

[m0rk]

locate teh engine speed sensor connector & get some WD40 in it mate.

and all the other connectors you can be bothered to do as well

 

[F2 Stu]

Forgot to ask where that is, the leads & dizzy cap look like original from factory and the rotorarm is glued in.

I'm praying this isn't a legacy of my fumbeld change @ Brands.

 

[m0rk]

rotor arm is easy to break off - just take it easy with that (£6 for a new one from VW main stealer)

Engine speed sensor is behind the front engine mount, so play follow the wire

 

[WeeJase]

fiddly little sensor that used to live on the side of the air box(can you tell i've forgotten what its called).

 

[F2 Stu]

Played follow the wire and it took me to the g'box

Anyway ran fine from cold this morning & this evening.

WD'd all the connections I could get to, some of them had moisture in them - no rubberseals

I'll whack new plugs, leads rotor arm & dizzycap at the weekend

Jason, Ive left that sensor disconnected after I did the cam belt and ran no different bizarre.

 

[Fl@pper]

noticed on mine last time the engine speed sensor looked easier to get to with the oil filter off - easier but still not easy

was on a ramp though

as for follow the wire - iirc the 3 2 pin connectors on the end of the engine (in front of the big round main one) 2 are knock sensors and other is engine speed

brown/grey/black - cant remeber which is which i THINK the knock sensors were grey/black

 

[F2 Stu]

Did an oil & filter change the other week

 

[m0rk]

noticed on mine last time the engine speed sensor looked easier to get to with the oil filter off - easier but still not easy

was on a ramp though

as for follow the wire - iirc the 3 2 pin connectors on the end of the engine (in front of the big round main one) 2 are knock sensors and other is engine speed

brown/grey/black - cant remeber which is which i THINK the knock sensors were grey/black

I did mine with the front end off & the engine mount removed

 

[Fl@pper]

I did mine with the front end off & the engine mount removed

mine was in same situation when i saw possibility of filter off