temp guage: up and down, and up and down! - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-17-2003, 01:18 PM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,529
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Post temp guage: up and down, and up and down!

i just replaced my thermostat for the second time in a month (2.5 liter grand am)and the temp guage still goes up and down. stays at 100 degrees for the first 10 miles, then it goes up to boiling, the red light comes on, i turn on the heater and it goes down to 200 or so then down to 190, then up to 240 then down to 200. does this sound like a electric fan switch? or like i have a dead rat inside my cooling system floating around? i plan on draining it by removing the lower hose tonight after work. good idea?

[ March 17, 2003: Message edited by: bullheimer ]</p>

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-17-2003, 03:08 PM
PrimeMover's Avatar
Sittin' on top of the world...
 
Last photo:
Join Date: Dec 2002
Location: Portland, Oregon
Age: 63
Posts: 467
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

sounds like a bad fan temp sender and, or restricted air flow. Lots of the newer cars have all kinds of junk stacked in front of the radiator like real thin finned AC condenser coils.. I've seen them plug up solid with road junk. I'd try pressure washing the core out towards the front of the car.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-17-2003, 03:14 PM
Member
 
Join Date: Dec 2002
Location: north florida
Age: 71
Posts: 220
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

check for a bleeder valve some were near the thermo. housing, could be an air lock. good luck JF
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-17-2003, 03:53 PM
Member
 
Join Date: Jan 2003
Location: chico california
Posts: 134
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

dont wanna say you dont know how to work on cars or anything but make sure the thermostat is in right side up. sadly enough, it was me or my dad that accidentally stuck mine in upside down and it would have pretty weird temp. readings while driving it. just gotta look at the obvious sometimes :p
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-17-2003, 05:03 PM
milner's Avatar
Member
 
Last photo:
Join Date: Feb 2003
Location: ontario canada
Posts: 245
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

i agree with toymobile, sometimes these things are a bear to get the air locks out of . leave the rad cap off and the heater on the hot position with the fan off. bring up to tempature. run at fast idle, but be very carefull, if it has a air lock, it will boil over and throw hot antifreeze. your cooling fan only comes into affect when idling. good luck!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-18-2003, 07:33 AM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,529
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Post

i pulled off the top hose and let the water spray out all over a couple times, now it works okay, except my bud mr goodwrench has one of laser thermometers and determined my coolant temp. switch turning the fan on at 220 and off at 200 and says to replace it which i will do today. it's supposed to turn on the fan at 205 or so and off at 175. it ran okay otherwise on the way to work today so i must have dropped some piece of gasket or silicone down the hole or else that damn rat got in there when i wasnt lookin first time i changed the thermostat. i had them in the right way btw. $22 bucks for that sending unit. not bad
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 03:53 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.