thermostat stuck open?
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Senior User
Joined: May 2007
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thermostat stuck open?
hey guys today we installed egr delete stc update new intake gaskets and blue spring but now my truck is running very cold I cant get it up passed 167 degrees for my oil temp and my coolant is sitting at 160 degrees would this be caused by my thermostat being stuck open?
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
You may have an air bubble in there. A damaged
sender or a bad T-stat. But you need to use some gauges not the ones
in the dash.
Give the upper rad hose a squeeze and see if the level in the tank
goes up and then drops lower after you let go. I understand that
it can take a bit of time if you don't use a vac fill system.
Last time it took me a week to get the bubble out after I had the
hoses off.
Sean
sender or a bad T-stat. But you need to use some gauges not the ones
in the dash.
Give the upper rad hose a squeeze and see if the level in the tank
goes up and then drops lower after you let go. I understand that
it can take a bit of time if you don't use a vac fill system.
Last time it took me a week to get the bubble out after I had the
hoses off.
Sean
Thread Starter
|
Senior User
Joined: May 2007
Posts: 165
Likes: 0
You may have an air bubble in there. A damaged
sender or a bad T-stat. But you need to use some gauges not the ones
in the dash.
Give the upper rad hose a squeeze and see if the level in the tank
goes up and then drops lower after you let go. I understand that
it can take a bit of time if you don't use a vac fill system.
Last time it took me a week to get the bubble out after I had the
hoses off.
Sean
sender or a bad T-stat. But you need to use some gauges not the ones
in the dash.
Give the upper rad hose a squeeze and see if the level in the tank
goes up and then drops lower after you let go. I understand that
it can take a bit of time if you don't use a vac fill system.
Last time it took me a week to get the bubble out after I had the
hoses off.
Sean
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Your just North of me. We are getting COLD rain here in Tacoma.
If you can gets your hands on a Vac fill kit that would help remove the
air. If not you could use a system tester and instead of putting it under
pressure. Just use a hand vac pump to pull a light vac on it.
This Youtube shows how it done.
I'll have to look up how much you want for the vac.
Sean
If you can gets your hands on a Vac fill kit that would help remove the
air. If not you could use a system tester and instead of putting it under
pressure. Just use a hand vac pump to pull a light vac on it.
This Youtube shows how it done.
I'll have to look up how much you want for the vac.
Sean
Logistics Pro
Joined: Jul 2004
Posts: 4,859
Likes: 55
From: Middleville, MI
tstat. mine did the same thing early this fall, ironically right after i did the EGR delete too... related, not sure, but a new one made it better.
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Posting Guru
Joined: Jun 2012
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I can verify that if you are getting 165ish on both temps, it's the thermostat. I just changed mine. I am monitoring the coolant level waiting for the air to burp out, since it took less to fill it that what came out when I drained it (by about a half cup, not much).
Brian
Brian
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Senior User
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came in this afternoon I live 1.5 hours from the nearest city center so had it shipped up. So I got the t-stat and installed and bam both temps reached 190s pretty quick so id say it was a success thanks for the help guys?
Lead Driver
Joined: Oct 2010
Posts: 5,420
Likes: 16
From: Ouray, CO
Great to hear it worked! Thanks for the update...
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