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Golf mk 4 dangly bit

I bravely (for me) changed the oil on my 02 Golf Mk 4 TDI yesterday. It all went well, but I came across something I didn't expect to find.

When under the car, in the space directly under the passenger side headlight there was a connector hanging loose on a lead. It might actually have been some sort of probe....

It was about an inch and a half long, black, round and the diameter of the end was a bit more than a centimetre I reckon - it was weird though as it only seemed to have one central contact, and outside of that it had 3 little metal spades sticking out an 8th of an inch or so, (as if it pushed into a round hole and locked into place).

So with these blades it looked a bit like a WW2 fighter plane seen from directly in front with a stubby little propellor (and no wings) - if that makes any sense. :)

I think this was dangling over the horn, can anybody identify what it might be, and what it should be connected to. I was struggling to see anything down there, so I just tried to tuck it away where it would get damaged, for the time being.

Cheers for any thoughts.

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring
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Outside air temperature sender?

Reply to
Duncan Wood

It's for the sump heater. Very handy if you live in Finland.

Reply to
Shawn Wilson

What colour are the wires? That would confirm what it is.

Reply to
Mrcheerful

On 11-Mar-09 21:17:14, Duncan Wood said

Based on a google image search, I think you are right it does seem to be the "OAT".

I have a real job seeing what I'm doing under there, but I was rolling around in the work car park at lunchtime, and I found a suitably sized opening in there behind the front bumper, and it pushed into that - which is hopefully where it belongs.

Sound right?

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring

On 11-Mar-09 21:52:21, Shawn Wilson said

Are you teasing me Shawn? :)

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring

The wires appear to be white and yellow, or close to that. What does that suggest?

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring

Outside air temp sensor wires should be brown with a white tracer and brown with a yellow tracer, so it sounds about right.

Reply to
Mrcheerful

Behold - the image, in case it helps:

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Does that confirm it?

I had a worry this morning, my engine temp gauge, is always at 90 degrees (straight up) after a few miles, but was reading a couple of divisions cooler, even after the 45 minute drive. I wondered if I might have accidentally biffed something while I was flapping about under the car. It was fine on the way home though, so I'm hoping all is well. :-/

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring

that looks distinctly temp sender to me

Reply to
Mrcheerful

=A0 (for e-mail remove ANTISPEM)

Hi,

I have a golf aswell and thought I'd go an have a look for you. This dangly doodah :) lives behind the lower left grill insert, god knows how it came lose. Its the outside :) temp sensor.

To remove the lower insert, you gently apply pressue downwards and angle it off towards you.

The temperature problem you mentioned aswell doesn't sound too strange as my golf does it occasionally, can explain it. But my VW specialist said its nothing to worry about, but if it doesn't move at all, its likely the coolant temp sensor is broken which is a common fault on the MK4 golf, I'm sure you know the golfs have more than there fair share of common faults lol.

But its a cheap fix for once a new sensor for future reference is about =A318/19 and takes about 3/4 minutes to change. I did mine about 4 months ago. Basically a case of removing old one and have new one ready to plug in quickly with new oring already fitted and connect back up. Theres a guide on it in somewhere

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Hope that helps ease your mind a bit, you've got nothing to worry about Angus :)

Reply to
soulman_uk

On 14-Mar-09 18:37:15, soulman_uk said

Thanks for that - I seem to have bodged the sensor into the right place, more by luck than judgement, but I may remove the insert to check.

Well, because the engine temp came up half way (about 1 and a half of the indications below 90 degrees up right) I was thinking it might have been the thermostat deciding to stay open for that trip, and generally being on the way out.

Okay thanks for that. If it does urn out to be the thermostat that's probably a bit trickier isn't it?

Cheers.

All the best, Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga Game reviews by Amiga players

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Reply to
Angus Manwaring

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