Freaking high idle
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
There is no MAP/Baro sensor used on this generation MAF truck from the factory. Regardless if it is using OBD-I (EEC-IV) or OBD-II (EEC-V) a Baro sensor is not listed anywhere in the EVTM or service manuals that I have ever seen.
Tuned
Joined: Jan 2021
Posts: 377
Likes: 81
Ummmm, yes there is in this generation. That being said, it may not be on the 96 and newer vehicles. In the non MAF AKA speed density vehicles, it is a MAP sensor with a vacuum connection to the manifold. On the MAF vehicles, it is a Baro sensor not connected the manifold. It is the same sensor in both, and mounted in the exact same place. Now, it may have been removed in the 96 and newer ODB-II vehicles, but it is there in the pre 96 systems.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Please provide a photo of the MAP sensor you refer to on a factory EEC-IV MAF truck. Also post the input pin number for the Baro sensor to the computer.
This request is not intended to troll anyone. I truly want to see where this sensor is and what input pin to the computer is because none of my Ford documentation shows it on a factory MAF truck. If I missed it in my documentation, then I sincerely apologize for derailing this thread.
This request is not intended to troll anyone. I truly want to see where this sensor is and what input pin to the computer is because none of my Ford documentation shows it on a factory MAF truck. If I missed it in my documentation, then I sincerely apologize for derailing this thread.
Tuned
Joined: Jan 2021
Posts: 377
Likes: 81
Correct, but there is a Barometric Pressure sensor. Same sensor, just no vacuum connection to the manifold. It is used strictly to help the ECU adjust for altitude.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Most of us know the difference between a MAP versus Baro sensor. The point I am making is on a factory MAF truck of this vintage neither variation is used.
Computer Pin-out/functions for a 1995 EEC-IV F-Series and Bronco with a 5.8L engine and MAF:
Computer Pin-out/functions for a 1995 EEC-IV F-Series and Bronco with a 5.8L engine and MAF:
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Looked for the sensor for my 95 F350 and found this. It is however for a diesel only.
(Read Reviews)
Part Number: 5364-06220326
Brand: Walker
Notes: Sensor Only
- The Barometric Pressure Sensor measure fluctuations in the ambient air pressure exerted by the atmosphere. The Engine Control Unit (ECU) uses this information to adjust fuel trim and engine timing.
(Read Reviews)
Barometric Pressure Sensor - 1994-1997 Ford F350 - Walker
Review Fitment NotesPart Number: 5364-06220326
Brand: Walker
Notes: Sensor Only
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Tuned
Joined: Jan 2021
Posts: 377
Likes: 81
We will have to agree to dissagree on this till I have a bit more time to get you your requested proof.
THERE IS a BP sensor on MAF and a MAP on SD systems. I ask you, why would Ford even bother programing in such parameters, table, scalars and functions into their ECMs if they were not used?
Just trying to figure out stuff like this.
https://www.fordf150.net/forums/viewtopic.php?t=69459
where they are talking about a MAF being dirty and referance the BP sensor as well.
I know I have seen wiring diagrams with both as well.
More later.
THERE IS a BP sensor on MAF and a MAP on SD systems. I ask you, why would Ford even bother programing in such parameters, table, scalars and functions into their ECMs if they were not used?
Just trying to figure out stuff like this.
https://www.fordf150.net/forums/viewtopic.php?t=69459
where they are talking about a MAF being dirty and referance the BP sensor as well.
I know I have seen wiring diagrams with both as well.
More later.
Tuned
Joined: Jan 2021
Posts: 377
Likes: 81
Given this, and that when I was just now out data logging what should have been the BP sensor, and trying to pull codes that seem to be non-existent with it disconnected, AND, seeing in the tune that it is inferred as well, I will concede this battle.
I am thinking where I got stuck on this was a few of the charts that I used to re-pin for the MAF and SFIs that they just left the rows blank, kind of indicating that it was there, rather than saying NOT USED, as it does in the actual pinout charts from FORD
Thanks for setting me straight on this. I hope it helps others as well.
EDIT to add: It is odd to me, that my ECU tune EEC-IV with MAF actually has a data log point for the BP, I am now thinking it is the inferred value mentioned above.
I am thinking where I got stuck on this was a few of the charts that I used to re-pin for the MAF and SFIs that they just left the rows blank, kind of indicating that it was there, rather than saying NOT USED, as it does in the actual pinout charts from FORD
Thanks for setting me straight on this. I hope it helps others as well.
EDIT to add: It is odd to me, that my ECU tune EEC-IV with MAF actually has a data log point for the BP, I am now thinking it is the inferred value mentioned above.
Tuned
Joined: Jan 2021
Posts: 377
Likes: 81
Looked for the sensor for my 95 F350 and found this. It is however for a diesel only.
(Read Reviews)
Part Number: 5364-06220326
Brand: Walker
Notes: Sensor Only
- The Barometric Pressure Sensor measure fluctuations in the ambient air pressure exerted by the atmosphere. The Engine Control Unit (ECU) uses this information to adjust fuel trim and engine timing.
(Read Reviews)
Barometric Pressure Sensor - 1994-1997 Ford F350 - Walker
Review Fitment NotesPart Number: 5364-06220326
Brand: Walker
Notes: Sensor Only
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Given this, and that when I was just now out data logging what should have been the BP sensor, and trying to pull codes that seem to be non-existent with it disconnected, AND, seeing in the tune that it is inferred as well, I will concede this battle.
I am thinking where I got stuck on this was a few of the charts that I used to re-pin for the MAF and SFIs that they just left the rows blank, kind of indicating that it was there, rather than saying NOT USED, as it does in the actual pinout charts from FORD
Thanks for setting me straight on this. I hope it helps others as well.
I am thinking where I got stuck on this was a few of the charts that I used to re-pin for the MAF and SFIs that they just left the rows blank, kind of indicating that it was there, rather than saying NOT USED, as it does in the actual pinout charts from FORD
Thanks for setting me straight on this. I hope it helps others as well.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
We all learn from each other on this forum. I was hoping it would not go too far off the rails, but it sure did make me go back through my diagrams and service info to make sure I was not getting everyone off track. The link posted by sswari has the exact info I was not recalling, i.e. the Baro data is inferred from the MAF signal.
Good to go on to the next topic.
Good to go on to the next topic.