Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

um.... what?

Thread Tools
 
Search this Thread
 
Old 12-09-2008, 11:15 PM
  #1  
Registered User
Thread Starter
 
Squeebs's Avatar
 
Join Date: Jul 2007
Location: Bakersfield
Posts: 593
Likes: 0
Received 1 Like on 1 Post
um.... what?

So I drove my truck about 12 miles... got home, and changed my oil. yes, amsoil. its lovely.


anyways.


why is my lower radiator hose and lower part of the radiator cool after it had been running at tempature according to the guage?
Old 12-09-2008, 11:19 PM
  #2  
Registered User
 
thook's Avatar
 
Join Date: Sep 2005
Location: NW Ark on wooded ten acres...Ozarks at large!
Posts: 8,656
Received 15 Likes on 13 Posts
How long had the vehicle been stationary before you noticed the temperature of the hose and rad?
Old 12-09-2008, 11:22 PM
  #3  
Registered User
Thread Starter
 
Squeebs's Avatar
 
Join Date: Jul 2007
Location: Bakersfield
Posts: 593
Likes: 0
Received 1 Like on 1 Post
Well... Pull the truck in the garage... get a 12mm and 14mm socket, get the ratchet, get an extension...



Pull the skid plate, pull the drain plug, and then go for the filter... 5 minutes tops.
Old 12-09-2008, 11:35 PM
  #4  
Registered User
 
thook's Avatar
 
Join Date: Sep 2005
Location: NW Ark on wooded ten acres...Ozarks at large!
Posts: 8,656
Received 15 Likes on 13 Posts
5 minutes? Um....that's pretty fast.

Well, all I can figure is that your guage is off or the thermostat is not opening up. Probably the latter.
Old 12-09-2008, 11:37 PM
  #5  
Registered User
 
thook's Avatar
 
Join Date: Sep 2005
Location: NW Ark on wooded ten acres...Ozarks at large!
Posts: 8,656
Received 15 Likes on 13 Posts
I'd test the thermostat. Kind of pain......having to drain coolant and all, but if the thermo doesn't open you know what happens next. ???
Old 12-09-2008, 11:37 PM
  #6  
Registered User
 
Matt16's Avatar
 
Join Date: Oct 2007
Posts: 5,377
Likes: 0
Received 4 Likes on 4 Posts
If it were a gentle drive over flat ground, chances are you thermostat never opened. I would monitor the temp gauge as if the thermostat is stuck closed, it will overheat.
Old 12-09-2008, 11:42 PM
  #7  
Registered User
 
thook's Avatar
 
Join Date: Sep 2005
Location: NW Ark on wooded ten acres...Ozarks at large!
Posts: 8,656
Received 15 Likes on 13 Posts
That's definitely a consideration that had not escaped me. The thermo not getting warm enough to open, that is.

Maybe take it for another drive. A longer one. See what happens then.
Old 12-10-2008, 12:51 AM
  #8  
Registered User
 
ovrrdrive's Avatar
 
Join Date: May 2006
Location: Central Florida
Posts: 1,765
Likes: 0
Received 2 Likes on 2 Posts
Is it cold outside?

Was your heater blowing warm air?
Old 12-10-2008, 01:08 AM
  #9  
Registered User
 
scottsmomo's Avatar
 
Join Date: Nov 2008
Location: Eagle River, AK
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
I have been told that the way those cooling systems are run, that often even though the core temp and thus your gauge are running normal, the t-stat opens and closes until the entire system reaches running temp. Something to do with a cooler line running in right before the t-stat which cools it off. I don't know for certain, but I've noticed this before on mine, and that was a reason that was given to me. This was after I had tested my t-stat.
Old 12-10-2008, 01:24 AM
  #10  
Registered User
 
abecedarian's Avatar
 
Join Date: Mar 2008
Location: Temecula Valley, CA
Posts: 12,723
Likes: 0
Received 4 Likes on 4 Posts
12 miles... yeah that's a consiberable run....
thermostat should've opened at least once, but that doesn't mean the radiator didn't cool the water down enough to make the lower radiator and hose cool.
if the heater was on, that's yet another place the coolant was cooled down in
Old 12-10-2008, 07:18 AM
  #11  
Registered User
Thread Starter
 
Squeebs's Avatar
 
Join Date: Jul 2007
Location: Bakersfield
Posts: 593
Likes: 0
Received 1 Like on 1 Post
Ya, I like to drive with the window down and heater blasting. I'll play with it more today.
Old 12-10-2008, 07:22 AM
  #12  
Contributing Member
 
mastacox's Avatar
 
Join Date: Dec 2003
Location: Fort Worth, TX
Posts: 2,893
Likes: 0
Received 2 Likes on 2 Posts
Your lower radiator hose is your water return. If its cool, that means your radiator is doing a good job of cooling the water going through it. Congratulations.
Old 12-10-2008, 07:42 AM
  #13  
Registered User
 
jason191918's Avatar
 
Join Date: Oct 2007
Location: Hopkins, MN
Posts: 1,521
Likes: 0
Received 0 Likes on 0 Posts
If it is an auto tranny, is this where the tranny cooler is?

If it is a manual, the tranny cooler might still be here, but not be used
Old 12-10-2008, 07:44 AM
  #14  
Registered User
 
krb90's Avatar
 
Join Date: Apr 2007
Location: East Tennessee
Posts: 69
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by mastacox
Your lower radiator hose is your water return. If its cool, that means your radiator is doing a good job of cooling the water going through it. Congratulations.
that would be my thought too......
Old 12-10-2008, 08:22 AM
  #15  
Registered User
 
ovrrdrive's Avatar
 
Join Date: May 2006
Location: Central Florida
Posts: 1,765
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by Squeebs
Ya, I like to drive with the window down and heater blasting. I'll play with it more today.
If the heater was working the water was hot. Your cooling system is working fine.
Old 12-10-2008, 12:45 PM
  #16  
Registered User
 
just a 22re's Avatar
 
Join Date: Jan 2007
Location: milwaukee, WI baby muddin in the streets!!
Posts: 2,801
Likes: 0
Received 1 Like on 1 Post
ok sorry to hurt everyone and dont know why noone else saw this but here it goes

ok if the t-stat was stuck closed then the motor would have over heated in about 20 minutes of just idlesing not ever driving and forsay it is stuck closed then it would heat up and cause alot of things to go wrong but like mine was


t-stat is stuck open causeing the motor to run very cold no heat and both the upper and lower hoses were cold to the touch cause the water was just flowing though the motor and not heating up and thus the motor was almost in a warm up fuel state i say everythings normal for a 12 mile run the lower hose will be colder then the rest of everything if it would get super hot why would it be so close to the alt heating it up so it wont charge anymore so just a though everythin gis normal and you just freeked out over nothing man have fun on that oil its alot of fun when the oil hits the front diff
Old 12-10-2008, 08:23 PM
  #17  
Registered User
 
Pistonman's Avatar
 
Join Date: Dec 2007
Location: Kingston, Washington
Posts: 169
Likes: 0
Received 0 Likes on 0 Posts
What was that...
Old 12-10-2008, 09:54 PM
  #18  
Registered User
 
thook's Avatar
 
Join Date: Sep 2005
Location: NW Ark on wooded ten acres...Ozarks at large!
Posts: 8,656
Received 15 Likes on 13 Posts
That was Allan. Might get used to it.
Old 12-11-2008, 12:59 AM
  #19  
Registered User
 
ovrrdrive's Avatar
 
Join Date: May 2006
Location: Central Florida
Posts: 1,765
Likes: 0
Received 2 Likes on 2 Posts
Alcohol is bad mmmkay?
Old 12-11-2008, 06:33 AM
  #20  
Registered User
 
jason191918's Avatar
 
Join Date: Oct 2007
Location: Hopkins, MN
Posts: 1,521
Likes: 0
Received 0 Likes on 0 Posts
so are paint chips


Quick Reply: um.... what?



All times are GMT -8. The time now is 11:04 PM.