Shift Solenoid woes... read here! - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST 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

Reply
 
Thread Tools Display Modes
Old 07-24-2008, 12:12 AM   #1
illinipo
Token Engin-nerd
 
illinipo's Avatar
 
Join Date: Aug 2006
Fan#: 37693
Location: Well wouldn't you like to know?, Not Listed
What I Drive: dirty wag; Party; Bavarian phallus

Posts: 3,408
FF Reputation: 272 illinipo Outstanding Standing Member illinipo Outstanding Standing Member illinipo Outstanding Standing Member
Buy-Sell-Trade Rating: (19)
Shift Solenoid woes... read here!

Okay so in an effort to dispel confusion and misinformation, I decided to make a user-friendly guide to 4f27e shift solenoids. im using these docs as my sources

http://www.atsgmiami.com/articles/ht...20Strategy.htm

http://www.zoom-tech.com/downloads/s...ford/4f27e.pdf

Shift solenoid A:
This solenoid appears to ONLY control 3-4 shifts.

Shift solenoid B:
This solenoid only controls torque converter lockup. When this solenoid is activated, The clutch inside the torque converter locks the stator to the impeller, making it a mechanical connection rather than a fluid one. Improves engine efficiency, and also drops the rpm by 200-300.

Shift solenoid C:
This is the big mamma. This solenoid controls the forward clutch for each shift. It is a pulsewidth-modulated solenoid, meaning the time length of a shift can be changed via an ECU tune. If this solenoid goes bad, you will have issues with the rpm jumping up really high during shifts and the trans will hesitiate to go into gear.

Shift solenoid D:
This solenoid controls whether or not first gear is engaged. When it is activated, it empties an accumulator filled with fluid, which releases a spring that engages 1st gear. This is why 2->1 downshifts are relatively rough. This solenoid also opens the 2nd/4th band of clutches when 1st is engaged. If this solenoid goes out, you may experience bucking when starting from a stop, or troubles downshifting into first.

Shift solenoid E:
im having a hard time figuring out what this one does, but it appears to only control 2-3 shifts.

EPC solenoid:
This solenoid controls how much pressure is in the solenoid system. It is told how much to give by the throttle position sensor. More throttle = more pressure.





obviously im just an amateur... just hope this will help someone out when we say "Shift solenoids are going out"


__________________
Quote:
Originally Posted by Dennis_Grant
Remember this list: Bilstein; Penske; Koni; Ohlins; Sachs; Dynamic Suspension.

Not on this list? Almost certainly crap.
SUV this!
illinipo is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 07-24-2008, 12:14 PM   #2
JRODSVT
Dragon Warrior
 
JRODSVT's Avatar
 
Join Date: Nov 2004
Fan#: 15362
Location: West Frankfort, IL
What I Drive: 03 SVT ZX5

Posts: 308
FF Reputation: 97 JRODSVT Excellent Standing Member
Buy-Sell-Trade Rating: (6)
good post with good information.

I say sticky. any other mods agree?
__________________
J-RAWK!!!
FocusFests best of sound 2008
(Oo> (SVT) <oO)
o xxxxxxxxxxxx o
JRODSVT is offline  
    Reply With Quote Quick reply to this message
Old 07-24-2008, 12:43 PM   #3
Mr.Bergner
coffee, have some
 
Mr.Bergner's Avatar
 
Join Date: Mar 2006
Fan#: 32799
Location: Overland Park, KS
What I Drive: 2004 TW Blue ZX3

Posts: 5,966
Points 6,353, Level 52
Points: 6,353, Level: 52 Points: 6,353, Level: 52 Points: 6,353, Level: 52
Level Up 2% Completed
Level up: 2% Level up: 2% Level up: 2%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 53 Mr.Bergner Excellent Standing Member
Buy-Sell-Trade Rating: (12)
That's awesome! Thanks for the info. I have a high mileage ATX so this is going to be handy.
Mr.Bergner is offline  
    Reply With Quote Quick reply to this message
Old 07-25-2008, 01:33 AM   #4
avengerc4
Broken cars s[:)][:)][:)] :(
 
avengerc4's Avatar
 
Join Date: Sep 2003
Fan#: 493
Location: Munster, IN
What I Drive: 02 PWorks SVTF, 2014 Subaru Outback

Posts: 18,829
FF Reputation: 4 avengerc4 Good Standing Member
Buy-Sell-Trade Rating: (17)
sticky for sure!
__________________
September ride of the month(2006)
Good judgment is based upon experience. Experience is based upon BAD JUDGMENT!!!
FF Member#: 493 and STILL LEARNING!
avengerc4 is offline  
    Reply With Quote Quick reply to this message
Old 07-25-2008, 01:36 AM   #5
Dcl2049
MyCarBreaksAlot
 
Dcl2049's Avatar
 
Join Date: Feb 2005
Fan#: 18957
Location: Auburn, AL
What I Drive: 2002 Malibu Blue ZX3

Posts: 8,609
FF Reputation: 69 Dcl2049 Excellent Standing Member
Buy-Sell-Trade Rating: (0)
Indeed. If I had a nickel for every auto tranny shifting weird thread I've seen...
__________________
Yes, that is a banana in my pocket.
Dan - gumpcrew #4
[BBS][Borla][Focus Central][Hella][K&N][Koni][Lentech][Wings West]
#23 STS Wiregrass Region SCCA
Dcl2049 is offline  
    Reply With Quote Quick reply to this message
Old 07-25-2008, 02:05 AM   #6
Brindfan
Infidel
 
Brindfan's Avatar
 
Join Date: Jun 2007
Fan#: 48126
Location: High plains of....., CO
What I Drive: 2013 Ford Focus SE Hatch - Race Red

Posts: 3,205
Points 3,766, Level 38
Points: 3,766, Level: 38 Points: 3,766, Level: 38 Points: 3,766, Level: 38
Level Up 78% Completed
Level up: 78% Level up: 78% Level up: 78%
Forum Activity 2%
Activity: 2% Activity: 2% Activity: 2%
FF Reputation: 25 Brindfan Great Standing Member
Buy-Sell-Trade Rating: (3)
Well done! Thanks!
__________________
"The only thing worse than a knee-jerk liberal is a knee-pad conservative." - Edward Abbey (1927-1989)
Hatch Nation#61 B.T.T.C.#3 ATX Faction#37 Rocky Mtn. Crew#3
Brindfan is offline  
    Reply With Quote Quick reply to this message
Old 05-13-2009, 05:27 PM   #7
RDRG
Focus Enthusiast
 
Join Date: May 2007
Fan#: 47517
Location: california
What I Drive: 2003 SE

Posts: 51
FF Reputation: 1 RDRG Good Standing Member
Buy-Sell-Trade Rating: (1)
Bringing this from the dead

1. My problem has gotten significantly worse as of a week ago. My engine light has come on and my car will not shift into OD. When in 3rd if OD is on my car will rev (to redline if I push hard enough) but will not actually accelerate.

I'm wondering if this problem would need solenoid 'A' and 'C' replaced or just one? From the explanation on solenoid C it sounds as if that needs to be replaced for sure which brings me to my next question

2. Does anyone have the part number for SS 'C'?
RDRG is offline  
    Reply With Quote Quick reply to this message
Old 12-07-2009, 06:02 PM   #8
Focus15
Focus Rookie
 
Join Date: Dec 2009
Fan#: 71102
Location: Reading, PA
What I Drive: 2002 Silver SE

Posts: 1
FF Reputation: 1 Focus15 Good Standing Member
Buy-Sell-Trade Rating: (0)
Same problem going on as the previous post. Found out its the solenoid A.
Focus15 is offline  
    Reply With Quote Quick reply to this message
Old 12-07-2009, 06:25 PM   #9
Dcl2049
MyCarBreaksAlot
 
Dcl2049's Avatar
 
Join Date: Feb 2005
Fan#: 18957
Location: Auburn, AL
What I Drive: 2002 Malibu Blue ZX3

Posts: 8,609
FF Reputation: 69 Dcl2049 Excellent Standing Member
Buy-Sell-Trade Rating: (0)
My OD went out and had the same problem as above post and it was also only A. You should be able to scan it at a parts store and see what the check engine light says is malfunctioning.
__________________
Yes, that is a banana in my pocket.
Dan - gumpcrew #4
[BBS][Borla][Focus Central][Hella][K&N][Koni][Lentech][Wings West]
#23 STS Wiregrass Region SCCA
Dcl2049 is offline  
    Reply With Quote Quick reply to this message
Old 12-08-2009, 12:02 AM   #10
Feral
Focus Addict
 
Feral's Avatar
 
Join Date: Aug 2008
Fan#: 58350
Location: G-Town, Ontario (Canada), Canada
What I Drive: 1 2002 / 2 2001 Wagons

Posts: 1,199
FF Reputation: 53 Feral Excellent Standing Member
Buy-Sell-Trade Rating: (23)
o.o

ok im just swapping out the shifter solenoids of my parts engine to my wrecked cars engine.. XD yeah I have a lazy shift on that car it sounded like I was missing 1-2 everytime and pegging the rpm's

hehe I'm eventually gunna have to get to my blue focus's its starting to do that aswell
__________________
Wagon Partout - http://www.focusfanatics.com/forum/showthread.php?t=212282

My Wagon Rebuild - http://www.focusfanatics.com/forum/showthread.php?t=217009
Feral is offline  
    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 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
Engine Light zummracer General Technical Chat 18 12-10-2013 10:08 PM
Anyone in MA wanna trade shift knobs? rockthezx3 North East Fanatics 12 02-26-2007 06:04 PM
Shift boot problem Johnny_P MK1 Interior Mods & Upgrades 3 07-24-2006 12:48 PM
red line shift Shady R SVT Performance (2002-2004) 44 11-10-2004 05:24 AM
Best RPM to shift at for a zx3? thrill5one6 General Racing Chat 15 10-18-2004 03:12 PM


All times are GMT -5. The time now is 08:38 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 Cadillac ATS-V, 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.