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Author Topic: engine temp switch  (Read 26041 times)

Offline 74chev4x4

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Re: engine temp switch
« Reply #30 on: August 31, 2010, 11:57:39 AM »
spring down pointed end up right
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Offline ccz145a

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Re: engine temp switch
« Reply #31 on: August 31, 2010, 12:01:14 PM »
right, you want the sensor part in the block's water.
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Offline 74chev4x4

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Re: engine temp switch
« Reply #32 on: August 31, 2010, 12:12:59 PM »
Should the water jackets where the wp mounts flow all the way around eachother cause I put the hose in the block in the water jacket when the wp was off and sprayed water in each side and they build up water and come back out the same side. I thought it should have came out the other side of the block.  Talking about where the wp flow coolant.
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Offline 74chev4x4

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Re: engine temp switch
« Reply #33 on: August 31, 2010, 12:16:25 PM »
just looked on my 454 thats in the garage and I don't think they are supposed to so its fine in that respect.
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Offline VileZambonie

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Re: engine temp switch
« Reply #34 on: August 31, 2010, 04:59:44 PM »
What makes you think there is no flow? how are you checking it? Are you saying if you pull off a heater hose and start the engine no coolant comes out?
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Offline 74chev4x4

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Re: engine temp switch
« Reply #35 on: August 31, 2010, 07:55:23 PM »
Cause the hoses have no pressure and I can open the cap and see nothing moving. Nothing in the heater hoses its not flowing. Now motor has a noise like a loud exhaust leak but it sounds internal this sucks.
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Offline VileZambonie

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Re: engine temp switch
« Reply #36 on: August 31, 2010, 08:40:14 PM »
Again, if you pull off a heater hose with the engine running no coolant pumps out is what you are saying correct? You will not see coolant flowing through the radiator unless your heater core return goes into the radiator and the level is low.
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Offline 74chev4x4

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Re: engine temp switch
« Reply #37 on: August 31, 2010, 10:42:49 PM »
Yea no coolant comes out correct.
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Offline VileZambonie

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Re: engine temp switch
« Reply #38 on: September 02, 2010, 10:03:18 AM »
Then there is either no coolant in the engine or the impeller is broken. As soon as the water pump starts rotating coolant is pumped into the heater core. This is the bypass side of the circuit.
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Offline 74chev4x4

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Re: engine temp switch
« Reply #39 on: September 05, 2010, 11:09:26 AM »
OK update, pulled the tstat out and ran it without and it pumps fine? Truck does not get hot now and is pumping coolant fine.  What should I do when I go to put a new tstat back in or what kind to buy dont trust the new old one?
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Offline Irish_Alley

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Re: engine temp switch
« Reply #40 on: September 05, 2010, 11:20:23 AM »
Put it in a boiling pot of water and see if it opens. They also make fail safe t-stat that if they do fail they stay open there a little more but if you want to be stafe. me I just use autozones haven't had bad luck with them
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Offline 74chev4x4

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Re: engine temp switch
« Reply #41 on: September 05, 2010, 11:22:12 AM »
yea that was the first thing I did before I changed the wp or anything else, it opened up in boiling water but wouldn't up in the truck?  Took it out and the cooling system is fine.
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Offline beastie_3

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Re: engine temp switch
« Reply #42 on: September 05, 2010, 12:39:24 PM »
It does take longer to open in the engine than a boiling pot of water. Just put it all back together and run the truck for a few minutes.
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Offline 74chev4x4

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Re: engine temp switch
« Reply #43 on: September 05, 2010, 12:45:42 PM »
with a new tstat right, I have been running it with out the tstat and its great.
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Offline Irish_Alley

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Re: engine temp switch
« Reply #44 on: September 05, 2010, 01:50:08 PM »
The only problem with that is it might run cooler in the winter it might not heat as well as you want
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