Identify Me

[Ajay]

Hi Folks,

I've got a mk1 golf with an AGU 1.8t engine and I'm curious.. what is this sensor missing a wire?

Cheers

Al

[gazareth]

looks like a coolant temp sensor of some kind, but it might not be relevant to your engine install. is your temp gauge working?

[Ajay]

yes temp guage seems normal but I am getting code p0116 too. I think there is another sensor in the block (where it should be) hence my confusion =/

The fault I am trying to cure is over-fueling (strong petrol smell and low mpg)... also when its coming down the revs to idle it almost stalls and it's like an anti-stall system kicks in. There's no specific patern, it does it all the time and after a few 'blips' of the throttle by this auto system, it stabilises

[gazareth]

is there not a wiring plug hidden away somewhere that should plug on to that? is it the full agu loom and how does it run when cold?

[Ajay]

I cannot see one around it. It runs like any normal car on startup/cold - it idles a bit smoother and the revs run a bit higher (1100?) I dont know if it has a full loom, this isnt a conversaion I have done myself - bought it like it is about a year ago

[itavaltalainen]

Looks a bit of a bodge to me - maybe the sensor is just in there to act as a plug?

[Ajay]

Maybe so - doesnt seem to be anything disconnected anywhere. Managed to knock the sump thismorning so it's going to be out of action for the next few days anyways.. #oops!

[Mr_Orange]

I'm 100% sure that's meant to be plugged in!
It's the coolant temperature sender and (as well as providing signal to temp gauge) provides the ecu with engine temp, to govern air/fuel etc. Car will run crazy rich all the time without it

[gazareth]

I would start by having a good dig around in the loom to see if the plug has been left off by mistake.

[Ajay]

I'm 100% sure that's meant to be plugged in!
It's the coolant temperature sender and (as well as providing signal to temp gauge) provides the ecu with engine temp, to govern air/fuel etc. Car will run crazy rich all the time without it

I do agree - BUT there is already a temp sensor plugged in on the block and the dash sensor seems to be working correctly as it's showing around half or under usually and slightly over if I lean on the turbo on the bypass...

I would start by having a good dig around in the loom to see if the plug has been left off by mistake.

Will have a good look tomorrow (when the sump turns up hopefully)

Question: Does anyone know of a manual for an AGU engine?

Al