mass airflow sensor

XJ?2010 · 10-01-2008, 08:20 PM

where is the mass airflow sensor?

BlueXJ · 10-01-2008, 11:03 PM

It is divided into several peces on an XJ. There is the MAT and the TB itself with the IAC and the TPS all together they do the job af a MAS on most systems.

okcjeeper · 10-01-2008, 11:07 PM

Also isn't the MAP sensor apart of that equation?

BlueXJ · 10-01-2008, 11:12 PM

Quote:

Originally Posted by okcjeeper

Also isn't the MAP sensor apart of that equation?

That's what I meant to type when I put MAT I should have put MAP. Thanks for proofreading behind me OKC!!

okcjeeper · 10-01-2008, 11:47 PM

Quote:

Originally Posted by BlueXJ

That's what I meant to type when I put MAT I should have put MAP. Thanks for proofreading behind me OKC!!

Anytime..

XJ?2010 · 10-02-2008, 04:13 PM

k thanks guys i wanted to check them out cause there are cleaners you can use on them and it may give a little more power for cheap

The Downward Spiral · 10-02-2008, 04:41 PM

Quote:

Originally Posted by BlueXJ

It is divided into several peces on an XJ. There is the MAT and the TB itself with the IAC and the TPS all together they do the job af a MAS on most systems.

Not really, but kinda sorta close. The mass airflow sensor is used to sense the density and volume of air going into the engine, along with a few other sensors as well. Jeeps use a speed density style fuel injection system. It uses the intake air temp sensor to check temperature, the map sensor to check barometric pressure, and the crank sensor to see how fast the engine is turning. The engine controller knows how much air the engine is drawing in at any given rpm and baro pressure, and uses the other sensors to complete the calculations required to run the engine efficently.

n_a_i_w · 11-09-2010, 07:55 PM

This is a old post but I'll try it anyway. How badly would this effect your gas milage?

UserID6095 · 11-09-2010, 07:56 PM

Quote:

Originally Posted by n_a_i_w

This is a old post but I'll try it anyway. How badly would this effect your gas milage?

Which part?

sems · 11-09-2010, 08:11 PM

As far as I know. Cherokee's use "speed density", speed density systems do not use a mass airflow (MAF) sensor.

10-01-2008, 11:03 PM	#2
BlueXJ Renix Super Guru Garage is empty, add now Join Date: Mar 2008 Location: In yourz postez fissin jurr spelinzs Posts: 24,198 My Photos 1990XJ/1989MJ Cherokee Engine: 4.0L Renix Transmission: AW4/AX15 Transfer Case: NP242 Front Axle: Dana30 Rear Axle: 8.25 Chryco 29 spline Tires: 31 x 10.50 BFG KOs Lift Specifications: 3.5" Rubicon Express Misc Accessories: Homemade bumpers & MM Winch JKS Trackbar ZJ steering	It is divided into several peces on an XJ. There is the MAT and the TB itself with the IAC and the TPS all together they do the job af a MAS on most systems. __________________ JEEP I bow to its almighty power which no mortal 4x4 can match. R.I.P. Zachman you will be missed. CF the friendly forum R.I.P. Brian (96_XJ) Perinne http://www.xjtalk.com/index.php www.ComancheClub.com CBW Member #69

10-02-2008, 04:13 PM	#6
XJ?2010 CF Veteran Garage is empty, add now Join Date: May 2008 Posts: 2,911 My Photos 1987 Comanche Engine: I6 4.0L Transmission: AX15 Transfer Case: NP231 Front Axle: Dana 30, 4.56's, Open Rear Axle: Ford 8.8, 4.56's, Elocker Tires: 33x13.5R15 Toyo Open Country Lift Specifications: RE 6.5" Short Arm, SOA, Bilstien 5100's Misc Accessories: Some Random Junk	k thanks guys i wanted to check them out cause there are cleaners you can use on them and it may give a little more power for cheap __________________ 87 MJ - 4.0 - 5 Speed - 6.5" SOA - 30/8.8 - 4.56's - Locked - 33's Build Thread

11-09-2010, 07:55 PM	#8
n_a_i_w Senior Member 1988 Jeep Cherokee Join Date: Jun 2010 Location: Arizona Posts: 651 My Photos 2000 Cherokee Engine: 4.0 Transmission: AW4 Transfer Case: 242 Front Axle: D30, Yukon 4:88 gears, Eaton E locker, Riddler cover Rear Axle: Ford 8.8, Yukon 4:88 gears, Eaton E locker, Ridder cover Tires: Goodyear Dura Trac 315/75R16 Lift Specifications: XJ 6.5" Critical Path Long Arm Lift Kit, IRO Heavt Duty Over THe Knuckle Steering Misc Accessories: Doetsch 8000 Shocks, XJ Hack-N-Slap Slip Yoke Eliminator And Driveshaft Kit, Cold air intake,	This is a old post but I'll try it anyway. How badly would this effect your gas milage? __________________ Check out my thread: Iron Rock long arm biuld: http://www.cherokeeforum.com/f2/iron...ift-kit-50027/ Overall Jeep biuld http://www.cherokeeforum.com/f46/198...ck-ride-49914/

11-09-2010, 08:11 PM	#10
sems Member Garage is empty, add now Join Date: Nov 2009 Location: Edmonton, Alberta, Canada Posts: 133 My Photos Cherokee	As far as I know. Cherokee's use "speed density", speed density systems do not use a mass airflow (MAF) sensor. __________________ 98 Jeep Cherokee XJ - 3.5" lift, 31x10.5 Good Year Wrangler Duratrac's, Homebrew front bumper, quick disconnects.

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10-01-2008, 11:07 PM	#3
okcjeeper ::CF Administrator:: Garage is empty, add now Join Date: May 2008 Location: Okc area Posts: 9,850 My Photos 1991 Cherokee Engine: 4.0 I6 Transmission: AW4 Transfer Case: NP242 Front Axle: D30 Rear Axle: D35 Tires: Treadwright MT-G 31x10.50 Lift Specifications: RE 3.5	Also isn't the MAP sensor apart of that equation?

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