1991 F150 Maf Location Please - F150online Forums

1991 F150 Maf Location Please

Thread Tools Search this Thread
Old 12-09-2004, 07:10 PM
Junior Member
Thread Starter
Join Date: Dec 2004
Posts: 1
1991 F150 Maf Location Please

I have a 1991 F150 with a 5.8
Can someone tell me where the MAF sensor is located?
Reply With Quote
Old 12-09-2004, 07:42 PM
Senior Member
Join Date: May 2004
Posts: 544
you don't have a mass air flow sensor,you have a manifold absolute pressure sensor in the intake.i'm not sure on it though.if you do have an maf it'll be on the plastic intake tubes close to the airbox.
Reply With Quote
Old 12-10-2004, 12:08 AM
Senior Member
Join Date: Dec 2002
Location: Windsor, ON
Vehicle: 1993 Ford F-150
Posts: 295

Whitey Is right. There is no Mass Air flow sensor in these trucks. There's a MAP (Manifold Absoloute Pressure) Oxygen, And even An IAC (Idle Air Contol motor) But not Mass air flow. If you're having a problem with the way it's running, post your symptoms and we'll do our best

Reply With Quote
Old 12-11-2004, 05:50 PM
Junior Member
Join Date: Jun 2004
Posts: 6
I have a 93 F-150 w/5.8 and the Manifold Absolute Pressure (MAP) sensor is located on the left rear portion of the engine firewall. It has a few vacuum lines coming out from it.
Reply With Quote
Old 12-12-2004, 04:55 PM
Join Date: Oct 2004
Location: Iowa
Vehicle: 1987 Ford F150
Posts: 43
Yes, these trucks use a Speed Density system, which uses the MAP sensor. It reads vacuum from the intake manifold.

Like already mentioned, it's located on the firewall on the passenger side and looks like this. Mine is mounted with the connector and vacuum line pointing towards the front of the truck.

Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
F150 4.6 5.4 swap Kman52 1997 - 2003 F-150 7 07-13-2016 10:57 AM
I'm back ddolliver Introduction Forum 5 11-06-2015 11:59 PM
Help Diagnosing a Mild Misfire at Low Idle - 2007 F150 4.6L pa 150 2004 - 2008 F-150 6 07-19-2015 07:57 PM
power lock problem knownspace 1997 - 2003 F-150 5 07-19-2015 12:58 PM
power lock problem knownspace Introduction Forum 0 07-14-2015 07:17 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are On
Refbacks are Off

All times are GMT -4. The time now is 11:41 AM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Fordé is a registered trademark of the Ford Motor Company