tried everything electrical problem on 05 ford focus need help - 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    
Ford Focus Tire & Wheels FocusFanatics Merchandise

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 08-07-2010, 12:54 AM   #22
Grumpy
Focus Addict
 
Join Date: Feb 2007
Fan#: 43791
Location: Vancouver, B.C.
What I Drive: 2005 Sonic Blue ZX3

Posts: 868
FF Reputation: 28 Grumpy Great Standing Member
Buy-Sell-Trade Rating: (0)
As the car has been doing this for a period of time but starts OK which suggests the battery has been getting charged sufficiently, so I doubt that it's the alternator. In the main fuse/relay junction box there is a relay called the power hold relay that puts battery power through a hot at all times 20 amp. fuse to the PCM when the Ign. switch is at On or Start. After checking the battery connections as suggested, I'd swap out this relay. It should be common knowledge by now, but I"ll repeat it.......NEVER, EVER disconnect the battery when the Ign. switch is selected ON, including any attempt to see if the alternator is producing current. It's a good way to zap the PCM and/or the alternator. The FSM for any modern car will have this warning.
Grumpy is offline  
    Reply With Quote
 

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:

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Ford Focus Parts List! gthang MK2 Focus 13 01-27-2009 12:05 AM
Focus Light Bulb Guide (MOD STICKY THIS) TKE_Quailman MK2 Focus 13 11-09-2008 05:36 PM
Aussie Fords Coming? igor Ford Focus & General Car Chat 27 06-06-2006 12:32 PM
Interesting Read on Ford Platforms on Wikipedia igor Ford Focus & General Car Chat 2 02-28-2006 03:45 AM


All times are GMT -5. The time now is 02:05 PM.


Copyright 2002-2014 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 Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat