4wd Accuator System Problems - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel Forum for discussion of the Ford F100, F150, F250, F350, Superduty and Diesel trucks.

 
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 08-01-13, 05:54 AM Thread Starter
Registered User
 
Join Date: May 2007
Posts: 18
4wd Accuator System Problems

2005 Ford F150 FX4 8Cyl

Some time ago had an issue with a metal on metal grinding sound coming from front axle area.

The noise seemed to happen mostly when going uphill when the truck was under a load. It would stop as soon as I let off the accelerator. After some trouble shooting found the problem definitely to be something with the 4wd accuators losing a vacuum and the 4wd attempting to engage..... apparently a common issue. I also did some troubleshooting by driving up a hill where the sound would always happen but in 4wd and the sound did not happen at all.

The first step i took was to replace the accuators themselves but it did not fix the problem (figures I took the most expensive route first) Next I replaced the solenoid for the system along with the vacuum hose assembly going to both hubs. After doing that the noise stopped and truck has been quiet for over a month.

Yesterday I towed my boat for the first time since making repairs and the noise returned. It only happened when I was driving on the highway and kept happening when ever going up a steep incline. After i unhooked the boat I drove the truck quite a bit including going up more hills and the noise did not happen at all.

As far as I know I have replaced all parts of the 4wd accuator system and it did seem to work because no more noise but it is still happening when under a heavy load (towing boat).

Anyone have any options I can try now ?

captainron19 is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome