MAP Sensor
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Senior User
Joined: Aug 2001
Posts: 275
Likes: 1
From: Lexington Park, MD
MAP Sensor
Hey everyone,
Here I am again. Ive searched all over and cant seem to find the answer to a question that I should know. I know what the MAP sensor does. I dont want to r&r it. I just would like to know where it is on my truck. Im confident that I dont have a MAF sensor cuz Ive never seen a sensor anywhere near my air filter. Im gonna assume that I have that big black map sensor, but I cant seem to find it anywhere under my hood. Its not in any of my pubs anywhere that I saw. Im hoping you guys can steer me in the right direction. All thanks for you guys help in advance.
Chris
Here I am again. Ive searched all over and cant seem to find the answer to a question that I should know. I know what the MAP sensor does. I dont want to r&r it. I just would like to know where it is on my truck. Im confident that I dont have a MAF sensor cuz Ive never seen a sensor anywhere near my air filter. Im gonna assume that I have that big black map sensor, but I cant seem to find it anywhere under my hood. Its not in any of my pubs anywhere that I saw. Im hoping you guys can steer me in the right direction. All thanks for you guys help in advance.
Chris
Senior User
Joined: Jan 2003
Posts: 383
Likes: 1
From: Newport News USA
MAP Sensor
Check under the cowling, mounted to the firewall on the passenger's side next to the evap. core/blower motor box. It should have a single vacuum hose running off it to the vacuum tree on the upper intake, as well as the plug running back to the wiring harness.
Fleet Mechanic
Joined: Aug 2001
Posts: 1,526
Likes: 0
From: Round Rock, TX
MAP Sensor
Chris, just to be clear, what you've found is the MAP sensor; the MAF sensor would be just on the throttle body side of the air filter box. Your original post and title was a bit ambiguous as to what you were looking for, but you were correct that your '91 does not have a MAF sensor.
