Thermostat replacement in Jimny VVT (DOHC) - pain in the A$$

asypeer wrote: how do I remove the old thermostat from its housing ? flat screwdriver?

thanks!!
Assaf

I do, If it is stuck in the housing I get a lever, not necessarily a screwdriver, under the bell shaped top and pop the stat out from there. I just did that a few months ago on my Junior as it happens.

Eventually I was able to remove it pretty easily using pliers. Was not glued as I thought..
Any thoughts about cleaning the intake manifold while I have good access? Already cleaner the throttle body with carb cleaner..
What about ruining the engine without a thermostat and some laundry powder to give it a proper clean?

asypeer wrote: Eventually I was able to remove it pretty easily using pliers. Was not glued as I thought..

Yeah, they often get sort of corroded in place a little but usually come out without too much fuss.

I just had this out last week while doing my engine swap.
I think i would remove or loosen the complete intake manifold instead of just the throttle body. Again. But now i know how to and where it all hooks up.

Could maybe access the thermostat from above if you loosen the intake manifold from the engine, and press it against the wing/battery.

The same goes if i should change the starter motor.
will be very difficult to change that one as well without removing the intake manifold.
Maybe easier if you got a lift for the car and can access starter from underneath.

Actually had to remove my manifold twice because i thought i could get the engine and starter and gearbox to meet up and become friends with the intake manifold still on the engine. But i was wrong.. It was easier to remove the complete intake manifold again to make sure everything was in place underneath..

Hi, I was able to remove the thermostat. I guess it would be OK to get it back.
I was thinking maybe it's good opportunity to give the cooling system a proper wash (half a glass of laundry powder into the radiator without a thermostat and then wash it with clean water for several cycles till it's clean.
As for the intake manifold, I'm not planning to remove it so i guess cleaning it is not a good idea as all the crap would go straight into the engine..

Was able to replace the thermo, the old one seems to be OK. Cleaned it from some light rust and it looks as new. Open in boiled water.
I also cleaned the throttle body, replaced the gasket and gave a minor clean to the intake manifold.
After everything was re-assembled - I flushed the cooling system with some distilled water and then fresh 50% 50% coolant (peak).
No leaks so far