Thermostat / Coolent question please?
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From: East TN
Thermostat / Coolent question please?
Did a coolant flush yesterday.
I could not get the block drain plugs out as hard as I tried. Is there a trick or do I just need a " bigger hammer "?
Then in my frustration I took the thermostat out and didn't note the bleed hole position or how the gasket went in. It just fell out when I pulled the flanges apart.
Everything is back together and seems fine, heat is fine, no leaks, etc., but the rubber gasket is visible between the thermostat flanges and something just doesn't seem right about that.
Can anyone please tell me the proper position of the bleed hole and if the gasket is in correctly? I fiddled with it every which way and put it back in the only way I could figure out.
I could not get the block drain plugs out as hard as I tried. Is there a trick or do I just need a " bigger hammer "?
Then in my frustration I took the thermostat out and didn't note the bleed hole position or how the gasket went in. It just fell out when I pulled the flanges apart.
Everything is back together and seems fine, heat is fine, no leaks, etc., but the rubber gasket is visible between the thermostat flanges and something just doesn't seem right about that.
Can anyone please tell me the proper position of the bleed hole and if the gasket is in correctly? I fiddled with it every which way and put it back in the only way I could figure out.
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From: Long Island USA
I wouldn't even bother with the block drain plugs...
Not sure what you mean about "rubber gasket" - do you mean the o-ring? It shouldn't stick out - at least, that's what I remember from doing mine...
And bleed hole? You mean in the thermostat itself? Shouldn't matter which way you turn it...
Not sure what you mean about "rubber gasket" - do you mean the o-ring? It shouldn't stick out - at least, that's what I remember from doing mine...
And bleed hole? You mean in the thermostat itself? Shouldn't matter which way you turn it...
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From: East TN
Thanks for the reply.
I pretty much decided not to mess with the block drain plugs. They've never been out and the truck is over 8 years old, so I guess they'll just have to stay there.
Yep - the O-ring. I'll take it apart and look at it again. Something just doesn't seem right.
As for the bleed hole in the thermostat, there's no index tab, no nothing, so I figured as long the thermostat is right side up, it's good to go.
I pretty much decided not to mess with the block drain plugs. They've never been out and the truck is over 8 years old, so I guess they'll just have to stay there.
Yep - the O-ring. I'll take it apart and look at it again. Something just doesn't seem right.
As for the bleed hole in the thermostat, there's no index tab, no nothing, so I figured as long the thermostat is right side up, it's good to go.
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From: Oxford, NC
I just did mine two weeks ago and that o-ring should not be visible when re-assembled. It stayed with the elbow that I removed to get to the thermostat. It was so easy to change I figured I had to of done something horribly wrong, but it came up to temp after a while and then opened like it was supposed to so the truck retained temp. Went on a week long vacation to the mountains of western NC and never overheated even using the engine to slow me down, brakes were getting real hot coming down the winding side of the state routes.(I do mean mountains, had to crawl to cabin in 1st up and down driveway, made my wife motion sick from all the switch backs at 10-30mph)
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From: East TN
Took it apart, got a new o-ring and checked Haynes manual. The way I read it the o-ring goes in the lower housing half under the thermostat which is where I put it and bolted everything back up. I had it on the upper half of the housing which is wrong I figure.
Now juterbock says his was on the top. I'm really confused now. Anybody got a reference on this please?
Haynes manual also says to put bleed hole on thermostat centered to passenger side. I can't see why, but that's what it says and shows. It does not show where the o-ring goes. Figures.
Now juterbock says his was on the top. I'm really confused now. Anybody got a reference on this please?
Haynes manual also says to put bleed hole on thermostat centered to passenger side. I can't see why, but that's what it says and shows. It does not show where the o-ring goes. Figures.
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From: Long Island USA
The only reason I can figure for putting the bleed hole to one side is when they put a temp sensor in the elbow and the bleed hole will push hot coolant right past it. But then, I've only seen that sort of thing on the old motors that needed emissions help with the EGR or high-idle coming on (or going off) at the right time.
I remember the o-ring on mine, just lay it in the hole and put the elbow on. Carefully
I remember the o-ring on mine, just lay it in the hole and put the elbow on. Carefully
