Ford Ranger map sensor.

dedrick · 08-25-2011, 09:15 AM

how can u troobleshoot a map sensor on a 97 ford ranger

**BrooklynBay** · 08-31-2011, 04:24 PM

Welcome to this forum! I've moved your thread into the Ranger section.

tmwalsh · 09-01-2011, 12:57 PM

You can use a DVOM with a frequency counter. The Hz will change with the change in manifold vacuum. There is a table in the shop manual that will indicate 'normal' ranges for given ambient atmospheric pressures or altitudes. The Hz should change as the throttle is opened and closed. A 'snap' of the throttle should show definite and quick response.
Generally, they go bad or work. When bad, the idle can go all over the place as the MAP is telling the computer the engine is under load and then .not., leading to a wandering and unstable idle.

tom

08-25-2011, 09:15 AM	#1
dedrick Wannabe Elite Explorer 1997 ford ranger Join Date: Aug 2011 Posts: 1 Vehicle Specs (Original Poster)	Ford Ranger map sensor. how can u troobleshoot a map sensor on a 97 ford ranger

08-31-2011, 04:24 PM	#2
BrooklynBay Aerostar Forum Moderator Brooklyn, NY 88 89 93 95 96 Aerostars Join Date: Nov 2005 Posts: 45,680 Vehicle Specs	Welcome to this forum! I've moved your thread into the Ranger section. __________________ My list of useful threads. My photo gallery. My product reviews. My list of items for sale. Aerostar owners thread. Aerostar parts work in Explorers, Rangers, and Bronco II thread. History of the Aerostar thread. Aerostar Forum. New Members Forum. Ford/Lincoln/Mercury Forum.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Jakee's 4.0 SOHC Build up discussion and motivation thread	Jakee	Need for Speed!	1549	04-09-2013 07:22 PM
Pulling a stuck o2 sensor	Stick_man	Stock 1995 - 2001 Explorers	20	02-14-2010 09:35 AM
Ohio Dept. of Education and Ford Motor Company Fund Join Forces on Education Program	chriswells78	Ford Industry News	0	06-08-2006 12:56 PM
Ford Fearful for Explorer's Reputation	Stephen	Ford Industry News	23	08-26-2000 11:00 PM

09-01-2011, 12:57 PM	#3
tmwalsh Wannabe Elite Explorer suburban atlanta, ga 85 Join Date: Dec 2007 Posts: 52 Vehicle Specs	You can use a DVOM with a frequency counter. The Hz will change with the change in manifold vacuum. There is a table in the shop manual that will indicate 'normal' ranges for given ambient atmospheric pressures or altitudes. The Hz should change as the throttle is opened and closed. A 'snap' of the throttle should show definite and quick response. Generally, they go bad or work. When bad, the idle can go all over the place as the MAP is telling the computer the engine is under load and then .not., leading to a wandering and unstable idle. tom