Temperature Senders?

[VWaxilMK1cab]

Good news on a MK1 changing the heater matrix is an absolute doddle, remove the passenger side lower dash tray, disconnect the 2 pipes and it just slides out!

Easiest car that I ever done. Why they went away from that idea and started burying them in the dash, behind the heater I'll never know

Cool. I'll keep an eye on it then.

As for my overheating, i've done 100 miles in it today and all is well. Since taking off the new expansion tank cap & putting my old one back on, it seems to be behaving. So i may try flushing out the system, then fill it back up with some proper coolant. Maybe a drop of radweld too, just to be on the safe side - do you know if radweld has any detrimental effects?

[gibby]

I personally would not put any radweld in my car.

[VWaxilMK1cab]

I personally would not put any radweld in my car.

Why not? or just being precautious?
It is only to try and seal up my leaky head, til I can either A) replace the gasket & flow the head (regbuild) or B) replace the engine with a new one

[gibby]

I personally would not put any radweld in my car.

Why not? or just being precautious?
It is only to try and seal up my leaky head, til I can either A) replace the gasket & flow the head (regbuild) or B) replace the engine with a new one

I've used it on old bangers that I've had to save myself some cash when I was younger and it worked, but I just don't like the idea of something in the cooling system maybe blocking more than the leaks. I guess I'm just being precautious.

[rubjonny]

well I used radweld in mine and it clogged my heater matrix!

[VWaxilMK1cab]

well I used radweld in mine and it clogged my heater matrix!

Hmm, right, well maybe i'll stay away from radweld for the timebeing! My leak seems to have all-but-stopped now! I've not had to top it up for days!
Wish I could get it to act stable for 5 minutes, if it's broken, why doesnt it just stay broke! if it's ok, just stay ok!!!! bloody cars!

[VWaxilMK1cab]

Another thing I've noticed is if I start the car & drive with the heaters on cold and then turn them to hot, the windscreen steams up, totally! i have to stop & wait for it to clear.
If I set off with it set to warm, I also get it fogging up the screen but not as bad.
Why is this?

[rubjonny]

Your matrix is dead, get a new one before it blows completly!

[VWaxilMK1cab]

<**NUMPTY WARNING!**>

Sorry, I'm useless with cars. where is the matrix located? & wat does it look like?

</Numpty warning>

[rubjonny]

It looks like a mini radiator, its located in the heat exchange box behind the dash.  Easy to swap, drain you coolant then remove the passenger side dash under tray.  You'll see 2 coolant hoses coming thru the bulkhead running to the hatrix, unclip the end cap, remove the 2 hoses then it just slides out!