Topic Sponsor
1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

High pitch ringing

Thread Tools
 
Search this Thread
 
Old 07-03-2015, 11:44 PM
  #11  
Senior Member
 
Jbrew's Avatar
 
Join Date: Nov 2006
Location: MI
Posts: 25,199
Received 5,544 Likes on 4,622 Posts

Default

Originally Posted by Green '01
Vacuum leak?
Spray a little starting fluid around the vacuum lines with engine running. When idle changes, you've found it.
Don't anyone every do that , unless you want to make leaks. That's just 100% bad info lol.
Old 07-04-2015, 12:06 AM
  #12  
Senior Member
Thread Starter
 
eff1fifty's Avatar
 
Join Date: Mar 2015
Posts: 206
Received 7 Likes on 7 Posts
Default

Update: you sons of guns were right.

It's in the accessory system

Fairly certain it's the AC bypass pulley. I sprayed the bearing area with WD to shut her up until a new pulley comes.

I think that should do it- but I will update post "fix"
Old 07-04-2015, 07:44 PM
  #13  
Senior Member
 
Green '01's Avatar
 
Join Date: Mar 2009
Location: Moncks Corner, SC
Posts: 199
Received 12 Likes on 12 Posts

Default

Originally Posted by Jbrew
Don't anyone every do that , unless you want to make leaks. That's just 100% bad info lol.
Really? I wasn't suggesting directly spaying the vacuum lines and certainly not SOAKING them. A LIGHT fog would do the trick.
If that is still bad advice, I apologize. Have read this same suggestion offered multiple times in various forums.
Old 07-04-2015, 07:55 PM
  #14  
Senior Member
 
Jbrew's Avatar
 
Join Date: Nov 2006
Location: MI
Posts: 25,199
Received 5,544 Likes on 4,622 Posts

Default

Originally Posted by Green '01
Really? I wasn't suggesting directly spaying the vacuum lines and certainly not SOAKING them. A LIGHT fog would do the trick.
If that is still bad advice, I apologize. Have read this same suggestion offered multiple times in various forums.
Well now you'll be able to straiten them all out with confidence. Say absolutely not, you'll do more damage then good as fogging works it way between the boot and the line causing a slimy chemical reaction that compromises the seal. That said, it should be repaired as it will get worse with time. To repair you clean the line w/spirits then soak the boot and line in MEK. Then shake it out while it drys. That will shrink the boot onto the line for an air tight connection.
The proper way to check vac problems is to smoke test. Cheap kits are readily available at most 3rd party suppliers.

You can also probe for leaks w/propane, but IME, that doesn't always work, SMOKE nets much better results.

Hows that ? You can copy and paste that if you want, - uknow, for all those in denial.

Last edited by Jbrew; 07-04-2015 at 08:21 PM. Reason: more details for Green.
The following users liked this post:
Green '01 (07-05-2015)



Quick Reply: High pitch ringing



All times are GMT -4. The time now is 02:28 AM.