Mass Air Flow Sensor - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 2.9L & 3.0L V6 Tech

2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

LinkBack Thread Tools Search this Thread
Old 04-04-2014
Thread Starter

I am: bill
Join Date: Apr 2014
Location: colorado
Vehicle: 1990 ranger
Drive Type: 4x2
Engine: 2.9
Posts: 1
Total Props: 0
Mass Air Flow Sensor

I just bought a 1990 Ranger with a 2.9L engine and I'm trying to get it running right. I need help locating the MAF sensor. Here's a pic if it helps:
Reply With Quote
+ 0 -
Old 04-04-2014
I am: dennis amon
Join Date: Feb 2013
Location: washington,pa
Vehicle: Ford Ranger
Posts: 87
Total Props: -3
its the black plastic thing on the intake air hoes by the clamp it has a plug with wires coming off of it I just changed mine but you came clear them
Reply With Quote
+ 0 -
Old 04-05-2014
northshoreranger's Avatar
I am: nathan lassley
Join Date: Mar 2012
Location: clovis,ca
Vehicle: Ford Ranger
Posts: 33
Total Props: 0
You don't have a mass air flow sensor.
Reply With Quote
+ 0 -
Old 04-06-2014
iTrader: (1)
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,734
Total Props: 88
Yes, ^^

The 1990 2.9l used a MAP sensor as the main control for Fuel/Air mix, it was called a Speed Density system.
MAF sensors were used in later years, Mass Air Flow systems, the MAF system was more accommodating to engine wear and changes over time.
Many racing engines are setup to use MAP systems as these are better suited for fuel injection control in non-standard operation.

MAP sensor would be on the passenger side firewall, some times hard to find behind wiring, it is small square usually black plastic, it will have a vacuum hose connected(best way to find it) and a 3 wire connector.

These can't be cleaned, but vacuum hose often leaks which causes fuel/air mix issues, from high or surging idle to bogging and stalling.
If you put good vacuum line on MAP then suck on it, it should hold a vacuum, if not replace MAP.
MAP sensors rarely fail, not never, it just shouldn't be replace without looking at other possible causes of engine problems.

Last edited by RonD; 04-06-2014 at 11:59 AM.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mass Air flow sensor mod ??? markw_06 2.9L & 3.0L V6 Tech 17 04-14-2013 12:59 AM
jet mass air flow sensor 06fx4jb83 4.0L OHV & SOHC V6 Tech 2 10-22-2008 02:12 PM
cold air intake/ mass air flow sensor question RangerRunner96 2.9L & 3.0L V6 Tech 5 08-29-2008 01:01 PM
Mass air flow sensor question Redbeard90 SOHC - 2.3L & 2.5L Lima Engines 10 08-21-2007 09:28 PM
Mass air flow sensor????? simmons General Technical & Electrical 13 07-05-2007 07:23 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 On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 12:08 PM.