what does that sensor do?

[tom w]

I was out this morning having a level top up on the 172, had a check under the oil cap and then i noticed that there was a plug just behind the oil filler that was unplugged.

So i plugged it in, next the car was rattling like the valves were hitting and was down on power.

Upon unplugging it, the car is back to normal.
I have taken a picture and will popst up in a bit, but its a circluar plugg looking this literaly just behind the oil filler hole

can anyone shed some light?

 

[tom w]

 

[Fred@BTM]

vvt solenoid

 

[tom w]

should it be unplugged?

It honestly sounds like there is a bag of nails in the top end when plugged in

why would it be unplugged

 

[Fred@BTM]

no idea why it would be unplugged, but it should be plugged in

has the car had a cambelt/any wrk done recently?

 

[tom w]

Had a belt done about 10k ago

If its not plugged in does that mean the vvt does not work?

could someone have left it unplugged as when a cambelt was done the vvt was damaged.

would this make the car slower not having it in

 

[Fred@BTM]

not plugged in = no vvt

you say when its plugged in it sounds like there metal on metal contact?

who did your belt? Renault? a specialist? or some random?

 

[tom w]

It was a garage, it was done before i bought it.

Yeah its like a metaly noise, very fast rattle, un plug it and it sounds fine.

the car is still very powerful and revs fine, could it just be solanoid just broken?

 

[Fastchip]

not plugged in = no vvt = no midrange torque

 

[Fred@BTM]

i'd check the timing before doing anything

 

[davebem]

Id take it to the garage and complain. Its prob a broken solonoid or they've made a mess of the cam timing procedure. Either way your car will be down on power.

 

[sideways danny]

probably a dead de-phaser pulley, and the solenoid has been disconnected to stop it operating. car will be losing noticable power without it on

 

[bmh.01]

probably a dead de-phaser pulley, and the solenoid has been disconnected to stop it operating. car will be losing noticable power without it on

Thats what i'd assume, the sneaky b******s.

 

[tom w]

I did think they had taken it off on purpose, ow well, i was selling it at end of feb so no point me trying to fault find it.

You will be suprised the car still pulls very well, i had a gti6 before and this feels just as fast

 

[iimushroomzii]

Note to self : Dont buy a car off him ^^

 

[partyboy23]

for the dephaser,am i right?