jderimig

Threads are stripped now. There might have been a small crack (cause of the original leak). Won't know until I remove the radiator. Tried Teflon tape but when I installed (with torque wrench a 20N-m) switch didn't tightened, just turned and know the threads were toast.

Its the original 84 radiator so I suspect the plastic is shot.

V2Rocket

interestingly i was just reading about a possible solution for you...

on some models of VOLVO they used a push-in temp switch in the radiator.
the hole in the rad is 22mm and the grommet reduces i think to 16mm.
so you might be able to fit the grommet to your stripped threads and use the Volvo switch.

https://www.fcpeuro.com/products/vol...xoCY3UQAvD_BwE

https://www.fcpeuro.com/products/vol...RoClQcQAvD_BwE

jderimig

Cool, do you know if this approach has been used successfully with a 944 radiator? I am not sure I want to do R&D on this one.

I already ordered a replacement radiator but I might keep the old one and see what I can do with it.

V2Rocket

no, probably never on a 944, but it was factory fitment to 10 years of Volvo cars.

thomasmryan

check the PET diagram for your model. I do believe the sump oil drain is the same size as the temp switch on some models. if you are familiar, one usually hits the torque specification as the "crush" part of the washer bottoms out.

(strings of Teflon swimming around in the cooling system might give you a cavitation issue if it gets caught on one of the vanes.)

Jon951

New turbo water pump and fuel rail installed.

Attachment 1242547

Jon951

Turbo water pump

ealoken

What turbo is that?
Any more engine bay pictures`?

V2Rocket

i suspect you know this but in case anyone else gets any ideas...
teflon tape is NOT for sealing a plumbing joint, in any way, shape or form.
its only purpose is to act as a thread lubricant while tightening tapered threads, which themselves provide the seal...

jderimig

Yup, but I don't think the thermofan switch threads are tapered. Nothing else was working and thought it couldn't hurt....wrong!

odonnell

You can always epoxy a good switch in until you get a new radiator.

jderimig

Might have to try that. The $300 L&R radiators seem to be hard to find lately, out of stock at alot of sites.

V2Rocket

cause they're made by Modine now
http://www.pelicanparts.com/More_Inf...66&SVSVSI=944M

jderimig

Can't get those either. Out of stock.

Fortunately Ian at 944online had one left, snagged it. Almost had to go with a Chinese aluminum, not that there is anything wrong with that.

odonnell

Except the people saying they fit very poorly, or don't fit at all without modification.