MAP specs
Thread Starter
|
Freshman User
Joined: Jan 2000
Posts: 40
Likes: 0
MAP specs
I was wondering if anyone knew the frequency of the MAP sensor for a 94 F-150 with a 302. The specs I have are 159 Hz at atmospheric pressure and 93 Hz at 25 inHg. My sensor only puts out 73 Hz at atmosperic and 60 Hz at 25 inHg. I don't think the specs I have cover the year model I have. Are these readings low and should I change the sensor or was there a change in the specs for my model and it is good. The sensor reacts fine and has no dead spots or fluctuations through out the entire vacume range. I did have a few hard back fires though. Any help would be greatly appreciated.
Elder User
Joined: Jan 2000
Posts: 966
Likes: 2
From: Crooked River Ranch, OR
MAP specs
>I was wondering if anyone knew the
>frequency of the MAP sensor for
>a 94 F-150 with a 302.
>The specs I have are 159
>Hz at atmospheric pressure and 93
>Hz at 25 inHg. My sensor
>only puts out 73 Hz at
>atmosperic and 60 Hz at 25
>inHg. I don't think the specs
>I have cover the year model
>I have. Are these readings low
>and should I change the sensor
>or was there a change in
>the specs for my model and
>it is good. The sensor reacts
>fine and has no dead spots
>or fluctuations through out the entire
>vacume range. I did have a
>few hard back fires though. Any
>help would be greatly appreciated.
According to the book "Ford Fuel Injection and Electronic Engine Control" the specs you show are correct for the 1988 thru 1993 model years. They would indicate your MAP sensor is faulty...BUT there could have been a change in 94 since this book went to print in 93 and does not cover the newer years. Deen
>frequency of the MAP sensor for
>a 94 F-150 with a 302.
>The specs I have are 159
>Hz at atmospheric pressure and 93
>Hz at 25 inHg. My sensor
>only puts out 73 Hz at
>atmosperic and 60 Hz at 25
>inHg. I don't think the specs
>I have cover the year model
>I have. Are these readings low
>and should I change the sensor
>or was there a change in
>the specs for my model and
>it is good. The sensor reacts
>fine and has no dead spots
>or fluctuations through out the entire
>vacume range. I did have a
>few hard back fires though. Any
>help would be greatly appreciated.
According to the book "Ford Fuel Injection and Electronic Engine Control" the specs you show are correct for the 1988 thru 1993 model years. They would indicate your MAP sensor is faulty...BUT there could have been a change in 94 since this book went to print in 93 and does not cover the newer years. Deen
Thread
Thread Starter
Forum
Replies
Last Post
02FX4Dude
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
7
Nov 1, 2018 05:19 PM
300-six
1987 - 1996 F150 & Larger F-Series Trucks
3
Nov 12, 2012 11:50 AM
davhut
1999 - 2003 7.3L Power Stroke Diesel
0
Feb 1, 2007 01:45 AM
weldman
1973 - 1979 F-100 & Larger F-Series Trucks
14
Mar 25, 2001 06:09 AM
