Boost Sensor aka map/baro sensor

M

mesa3

Member

• May 19, 2009

• #1

I can't believe how many names there are for this part. I think some of the aftermarket suppliers also call it just a MAP sensor. Seems kind of strange how it is attached to the top of the air box without penetratating the air box. I bought this 2005 Mazda 3 2.0 at an insurance auction, and the air box and related parts were crushed and loose in the engine bay.

Three questions:
1. Would anyone be willing to take a digital pix of the pigtail that connects to this sensor? Again, due to the collision, the three wires for this pigtail were severed.
2. Is this sensor supposed to have a vacuum hose attached to the bottom of it?
3. Which Mazda 3 trim line has this sensor?

Thanks.

 

T

tsunami

Member

Contributor

:

mazda3 5 door

• May 19, 2009

• #2

it should be a maf sensor and barometer. the vac line should be a breather line going from the valve cover to the intake should be connected to a nipple on the intake housing. some one probably had an aftermarket intake in there and took it out and just tossed the oem one in.

 

M

mesa3

Member

• May 19, 2009

• #3

Thanks for the name clarification. When you say "intake", do you mean the intake manifold or the intake hose of the air box leading to the throttle body?

 

M

mesa3

Member

• May 19, 2009

• #4

I see the hose you are referring to that connects the valve cover to the air box hose. What I was actually asking about is the baro sensor. Does the bottom of the sensor that has a nipple connect to anything. Attached is a pix of the sensor to which I am referring. The nipple on the underside was broken off, so you can't see it in my pix.

And I am still looking for a pix of the electrical pigtail. In this pix, my three wires are loosely inserted into the pigtail, as I didn't know the order.

 

Last edited: May 19, 2009

T

tsunami

Member

Contributor

:

mazda3 5 door

• May 20, 2009

• #5

wow that sucks. no the "boot" is just there as a protector to the barometer itself looking at that pic i would say you need a new barometer.

 

M

mesa3

Member

• May 20, 2009

• #6

Question. Do I really need to replace that baro sensor just because that hollow tube broke off? I mean it will still monitor the atmosphere through the hole in the bottom of the sensor. What do you think?

 

T

tsunami

Member

Contributor

:

mazda3 5 door

• May 21, 2009

• #7

it might. since no one else seems to be steppin up i will see if i cant snap a pic for you today of the baro sensor wiring.

 

M

mesa3

Member

• May 21, 2009

• #8

Thanks, Tsunami. I plan on ordering from an internet parts dealer the following parts before I can start replacing damaged components:

Intake manifold
air box assembly (low emission)
Right motor mount
Left transaxle mount
Power steering resevoir
Radiator Support
Set of headlights
Hood
Bumper Cover
Right Fender
Clock Spring

I already picked up a driver's air bag locally; I will have to send my air bag module to a company who does the resetting of the module. Sounds like a lot of parts, but the car will look really good after replacing such parts.

 

T

tsunami

Member

Contributor

:

mazda3 5 door

• May 21, 2009

• #9

eh doesn't sound that bad. headlights are crazy money. there are a couple of guys that are sponsers here on the forum that sell discount oem parts. ken at protege garage is a great guy and jason at onlinemazdaparts.com is as well. i have dealt with both and their prices are fair and service is top notch.