Overheating while Idle... - HondaCivicForum.com


Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 04-22-2011, 12:44 PM
HCF Member
Thread Starter
 
Join Date: Oct 2005
Location:
Posts: 4,509
Default Overheating while Idle...

O.K. sorry I have not posted in forever. Well on to the problem.

Driving around, she is fine. If I sit idle for over 5 minutes or so she starts to overheat. If I kick the heater on she cools right back off.

I thought that if the heater cooled it down it was not the thermostat. Any ideas?

98 EX d16y8
Reply With Quote
  #2  
Old 04-22-2011, 01:05 PM
cvcrcr99's Avatar
Moderator
 
Join Date: Aug 2007
Location: DUB Caeser
Posts: 7,074
Default

Trouble-Shooting Guide: Car Overheating

Overheating at idle is easy to figure out IMO.

Does your fan come on? If the heat coming from the climate control is warm/hot, I would assume that the Tstat is functioning just fine.
Reply With Quote
  #3  
Old 04-22-2011, 01:23 PM
HCF Member
Thread Starter
 
Join Date: Oct 2005
Location:
Posts: 4,509
Default

Got it figured out. The switch on the t-stat housing is bad. I broke out the multimeter and some jumper wires. Tested everything and its the switch. Relay is working fine, the upper radiator hose is hot just the like the manual said it should be. No head gasket leak after raising the front, removing the radiator cap, and reving the engine.

When I jumper the t-stat housing switch the fan kicks on like a champ. So I am off to grab a new one. Thanks for the reply. HCF is still the best.
Reply With Quote
  #4  
Old 04-22-2011, 01:25 PM
Recognized HCF Member
 
Join Date: Jun 2007
Posts: 10,023
Default

Overheating only at idle is usually because the radiator fan doesn't come on. Bypass the fan switch on the thermostat housing (unplug it and put a jumper wire in the plug on the car side). Confirm that the fan now starts immediately when you turn the key on. If not, check the fan motor, fuse, and relay. Test drive with the fan running all the time. If no overheating, replace fan switch.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Overheating while idling? mhillips Mechanical Problems & Technical Chat 2 08-23-2013 09:11 AM
Civic 08, Horn making noise while driving or while parked civic08driver Mechanical Problems & Technical Chat 0 09-22-2011 06:24 AM
01 Civic EX starts fine, runs for a while, then major loss of power while driving fazerman Mechanical Problems & Technical Chat 3 07-20-2010 07:45 PM
Please Help! My Heat only working while driving and now its overheating! mck519138 Mechanical Problems & Technical Chat 8 02-25-2010 11:42 AM
Overheating - replaced Rad, Thermostat, Temp sensor, hoses...still overheating trebor_2005 Mechanical Problems & Technical Chat 4 05-19-2006 01:40 AM


Tags
2000, 97, 98, civic, climate, control, engine, fan, heating, honda, idle, idling, overheating, overheats, sti

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 12:49 AM.