The infamous Cooling Fan Bug round two - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
FocusFest FocusFanatics Merchandise

Reply
 
LinkBack Thread Tools Display Modes
Old 05-13-2015, 09:36 AM   #1
Focus Rookie
 
Join Date: Jul 2013
Fan#: 117259
Location: Philadelphia, PA
What I Drive: 2002 Black SVT

Posts: 15
Points 66, Level 1
Points: 66, Level: 1 Points: 66, Level: 1 Points: 66, Level: 1
Level Up 32% Completed
Level up: 32% Level up: 32% Level up: 32%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 1 cmisegadis Good Standing Member
Buy-Sell-Trade Rating: (0)
The infamous Cooling Fan Bug round two

Before we go there... yes I am aware of all of the other posts pertaining to this issue. I've been through them a few times now.

Here's the quick back story. When I first got this car I replaced the t-stat and housing. Couldn't get the cooling fans to turn on after refilling the system. Went through and replaced all of the common parts (relays, fuses, fan resistor, temp sensor all new, and checked the fan motors). The fans came on low with the A/C on, but would not come on automatically at 90C like they are supposed to. After popping the hood to show the problem to a buddy, all he did was squeeze the upper radiator hose to feel the temperature of it... and the damned fans turned on once it hit 90C. Good to go from there on out.

Fast forward 2 years, did a timing belt/water pump job recently and I'm having the same problem again. I went through and checked all of the same components, everything looks good. Anybody have any suggestions here? There seems to be some debate at what temp the fans should turn on at, does anyone have the word from Ford on this one? 90C for the low speed?

Thanks guys.

If this is of any help... the fans turn on high when the temp sensor is unplugged. If I jumper the two pins of the connector together, nothing happens and the fans stay on. Plug the connector back in to the temp sensor and the fans turn off again. Shouldn't the full voltage or zero voltage from jumping or opening the connector trigger a change in the signal?


cmisegadis is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-13-2015, 04:09 PM   #2
Where am I?
 
zetecDon's Avatar
 
Join Date: Feb 2009
Fan#: 62506
Location: east of Cincinnati, OH
What I Drive: 02 ZX3, 02 MX-5, 09 Coupe

Posts: 8,740
Points 13,852, Level 76
Points: 13,852, Level: 76 Points: 13,852, Level: 76 Points: 13,852, Level: 76
Level Up 51% Completed
Level up: 51% Level up: 51% Level up: 51%
Forum Activity 84%
Activity: 84% Activity: 84% Activity: 84%
FF Reputation: 29 zetecDon Great Standing Member
Buy-Sell-Trade Rating: (50)
Moved to "General Technical Chat" as this is an electrical issue and not a performance modification related subject.
zetecDon is online now  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
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:
What I Drive
Year, color, and model of your car. Example: 2003 Pitch Black ZX3
Name
Your real name.
City
State
Country
Insurance
Please select your insurance company (Optional)

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.



Thread Tools
Display Modes

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 -5. The time now is 05:31 AM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac ATS Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum, Civic Type-R Forum and Volvo XC90 Forum.





Search Engine Optimization by vBSEO 3.6.1