***MAP sensor humming/buzzing, key not in ignition*** - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 1 Old 03-01-2012, 01:34 PM Thread Starter
Powerstroke.org Rookie
Join Date: Nov 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
***MAP sensor humming/buzzing, key not in ignition***

Was attempting to remove tranny dipstick today due to it having a crack where bracket is tack welded and having leakage where short tube goes in tranny (finish working on this tomorrow, POS). While I was under the hood I noticed a very low buzzing or humming noise. Thought it may have been GPR so listened close but that wasn't it. Finally found the noise coming from MAP sensor. I find it weird because the key is not in the ignition and if I move some of the wires connected to it the pitch changes or quits. Is my sensor going bad or is the connections to sensor not as conductive as they use to be? Should it make a noise with out the key in ignition? It's a early '99 by the way.
altoids is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel 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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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

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