map sensor

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Apr 28, 2018 | 02:17 PM

#16

1TonBasecamp

Lead Driver

Joined: Jul 2017

Posts: 9,580

Likes: 1,162

From: San Jose, CA

All the cars (and old Broncos) that I've worked on with either the MAP or BAP sensor (same thing, but different) were mounted vertically in that area. Guessing the vertical mounting would make a big difference in itself, but that cowl area in general probably gets tons of water thrown at it.
With the BAP sensor on the MAF engines it pretty much has to be pointed downward since there is no vacuum hose attached to the nipple, so water would just walk right in whenever it felt like it otherwise.
Relocation seems a prudent course of action, as they used to say...

Paul

Apr 28, 2018 | 09:47 PM

#17

TobyB

Laughing Gas

Joined: Oct 2014

Posts: 946

Likes: 186

From: Carnation, Wah

Sadly, I had the same problem-
the aftermarket ones just don't last.
The local junkyard charged me for a
couple of 'relays', and 2 years later,
I still have a spare.

t

Apr 30, 2018 | 07:53 AM

#18

vjsimone

Cargo Master

Joined: Jun 2013

Posts: 3,177

Likes: 15

From: Somewhere n North America

Quote:

Originally Posted by presbow

1988 f150 with 5.0 what would cause my map sensor to fail every few thousand miles, have 5 volts and good ground. truck goes into limp home mode put new map in and runs fine for awhile

Define "a while" ?
Have you run the KOEO & KOER ?