Stuck open thermostat.

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Originally Posted by roofy

4.5 is different to a 3L

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Just a tad. jaysee might be in for a surprise when he gets to Johns. Lol.

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Originally Posted by mudski

Just a tad. jaysee might be in for a surprise when he gets to Johns. Lol.

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yep but he can get in tight spots better than me

Im not too bad in small spots, you may be surprised what John and I can acheive
Plenty of bandaids he he he

Ow yea.. I just remebered all this chat of a shoit location on the 3ltr

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Originally Posted by threedogs

So your an old hand at this, good to hear

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Yep, on my own cars.

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Originally Posted by roofy

4.5 is different to a 3L

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No not really, sames things just in a different place. Will work our way through it. I've had a heap of different of cars over the years.

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Originally Posted by mudski

Just a tad. jaysee might be in for a surprise when he gets to Johns. Lol.

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Always up for a challenge....

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Originally Posted by roofy

yep but he can get in tight spots better than me

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Well well see about that.

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Originally Posted by threedogs

Im not too bad in small spots, you may be surprised what John and I can acheive
Plenty of bandaids he he he

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Hopefully not.

Attachment 66172
this is a thermostat from a td42. seized open.
couldn't get it warm normal driving had to thrash it up a steep hill to warm it a bit.
then it would cool off pretty quickly.

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Originally Posted by garett

Attachment 66172
this is a thermostat from a td42. seized open.
couldn't get it warm normal driving had to thrash it up a steep hill to warm it a bit.
then it would cool off pretty quickly.

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My td42 thermostat was also frozen open..
Had no idea untill I removed it at 500,000k overhaul lol..
No wonder the heaters took forever to work lol..

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Originally Posted by biggqwesty

Ok so today while driving around I've noticed the normal driving temp ranges from 83 threw to mid 90's.
But when pulled up and at idle for 5-10 mins coolent temp drops right off to like 60 ish..

Now my understanding is the thermostat should close keeping engine temps up around 80 odd and then open when around 88??

So with my temps dropping so low is it unreasonable to suspect a stuck open thermostat?

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Just installed VDO temp gauge in ute and noticed same issue. Temps vary from about 75 to 85 degrees depending on load when on the move but yesterday in Brisvagas traffic noticed temp just once drop to about 50 when stopped at lights. New thermostat installed at same time as new Dessert Cooler radiator and gauge.

Hmm interesting.. did you test thermostat before installing?

But if your working your engines hard and temps rise a bit while at it, when you back of go slow stop and idle
then the temps are going to drop any way ?