It is currently Thu Mar 28, 2024 4:14 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 14 posts ] 
Author Message
 Post subject: How to test if MAF sensor or connector is bad
PostPosted: Thu Feb 04, 2010 3:18 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
I have a P0100 code showing up. Not sure if it's the MAF sensor or the connector, this happened after ORM and reconnecting the sensor ...... How can I test the MAF sensor to see if it's the culprit?

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Sun Feb 07, 2010 9:52 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
Can someone smarter than me help me out with this?

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Sun Feb 07, 2010 11:53 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Sun May 24, 2009 9:25 am
Posts: 909
Location: Kearney, NE
P0100-MAF SENSOR SIGNAL VOLTAGE TOO HIGH

My guess would be the MAF sensor was damaged while you had it unplugged... Can this be checked with a voltmeter?

I'm not smarter than you.... In fact, I don't have a freaking clue. But I thought I'd at least throw out a guess :SOMBRERO:

_________________
2006 Jeep Liberty CRD, Limited
GDE Eco Tune, GDE TCM Tune, Bauer 203* Tstat, Amsoil EaA 201 Filter, Clean MAP, Samco CAC Hoses, Magnaflow Muffler #12226.
New Mopar Fuel Filter, K&N Filterminder, Fumoto Oil Drain Valve
225/75R16 Hankook Dynapros


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 12:47 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
Thans Stout ..... I appreciate the advice.

Can anyone suggest a good electrical parts cleaner that will dissolve oxidation on the connector terminals?

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 12:55 pm 
Offline
LOST Member
User avatar

Joined: Thu Jul 30, 2009 9:26 am
Posts: 347
Location: MN
Check your FSM, there should be a MAF test sequence for the unit.

Your LAS should have a spray can of electric component cleaner, spray and pray. The best way is to remove the pins from the plug and give them a good cleaning with emery cloth, or a mixture of baking soda and water. After reassembly, use some dieletric grease on all connections, OR pack the plug and socket with grease and tape over to prevent further corrosion.

_________________
-Rich
It must be air in the fuel!


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 2:16 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
Thanks Rich,

Check your FSM, there should be a MAF test sequence for the unit, OK i'll have a look.

I am assuming that LAS = Local Autoparts Store?

You said that "The best way is to remove the pins from the plug" But the plug is super small and the pins are microscopic ..... how does one begin to do that.

I wonder if I couldn't just submerge it in a solution for a while, one that doesn't harm the plastic cover, what do you think?

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 3:28 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Thu Sep 11, 2008 2:03 pm
Posts: 1866
Location: Houston, TX
I would try chlorine-free brake parts cleaner - it evaporates rapidly and should only cause minimal damage to the plastic as long as you don't overspray.

_________________
In this war of lines, so many have been crossed. Where will it all stop?

2006 Deep Beryl Green CRD Sport *SOLD 1/22/12*
Provent, V6 Airbox, Fumoto, Samcos, GDE ECO & TCM Tune, Euro JK TC, Magnaflow Catback
245/70/16 Destination A/T's
Boiler's Radiator Skid Plate
Jeepin' By Al 2.5 inch Adjust-A-Strut Lift, JBA Gen 4.5 UCA's (6/5/10)

Image


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 6:48 pm 
Offline
LOST Addict
User avatar

Joined: Wed Mar 29, 2006 8:34 am
Posts: 1150
Location: East Tennessee
The original post doesn't say whether you tried to clear the code with a code reader. It takes a few drive cycles for it to clear on its own...

_________________
Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Tue Feb 09, 2010 7:35 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
Goglio,

I had the codes cleared at AutoZone several times, and it returned everytime.

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Wed Feb 10, 2010 1:49 pm 
Offline
LOST Member
User avatar

Joined: Sun Oct 19, 2008 4:51 pm
Posts: 255
Location: Madison, AL
Quote:
I had the codes cleared at AutoZone several times, and it returned everytime.


I've done the same thing; codes came back as I was backing out of parking lot. When I get around to it on a warmer day, I'm gonna try and clean the pins if possible, not sure how to make sure pin sockets are clean. Someone mentioned that we should've put som sort of dust cap or tape over connector to keep it clean and protect from corrosion. I just wanted to plug mine back up and clear codes to see if CEL was indicative of any other problems. Found out I might have GP#1 and #3 problem.

_________________
Solar Yellow 2001 TJ Sport 4.0 auto 4X4
White 2006 Liberty Limited 2.8 CRD 4X4...SOLD 4-21-2012


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Wed Feb 10, 2010 9:26 pm 
Offline
LOST Member
User avatar

Joined: Thu Jul 30, 2009 9:26 am
Posts: 347
Location: MN
racertracer wrote:
Thanks Rich,

I am assuming that LAS = Local Autoparts Store?

Yep, stolen from LBS (Local Bike Shop)

Quote:
You said that "The best way is to remove the pins from the plug" But the plug is super small and the pins are microscopic ..... how does one begin to do that.

I will check on my Jeep when my wife gets back from her parent's place. Subaru is dead, so we are down to one winter-able vehicle till insurance gets around to their job. Should be a matter of slipping the main lock out of the plug assy, using a probe to move the locking clips, and pulling the wires/pins out of the plug. Sadly there is nothing you can do for the male pins on the MAF itself, because they are fuzed in there. Best bet there is some electrical parts cleaner and some compressed air to dry it out.

DO NOT USE BRAKE CLEANER Most are quite corrosive to plastic, rubber, and silicone... which your MAF plug is made of.

Quote:
I wonder if I couldn't just submerge it in a solution for a while, one that doesn't harm the plastic cover, what do you think?


CAC has a very nice product for cleaning the MAF sensor, it is safe for the sensor, plastics, and all other bits in the assembly.

_________________
-Rich
It must be air in the fuel!


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Wed Feb 10, 2010 9:48 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
I heard of CRC cleaner but never heard of the one you mention.

Google came back with nothing.

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Wed Feb 10, 2010 9:51 pm 
Offline
LOST Member
User avatar

Joined: Thu Jul 30, 2009 9:26 am
Posts: 347
Location: MN
racertracer wrote:
I heard of CRC cleaner but never heard of the one you mention.

Google came back with nothing.


http://www.crcindustries.com/auto/conte ... aspx?ID=79


05110 -- Mass Air Flow Sensor Cleaner, 11 Wt Oz

Image

_________________
-Rich
It must be air in the fuel!


Top
 Profile  
 
 Post subject: Re: How to test if MAF sensor or connector is bad
PostPosted: Wed Feb 10, 2010 9:53 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Tue Sep 22, 2009 10:16 pm
Posts: 3059
Location: Oxford, Connecticut
Thanks

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 14 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 37 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!
Logo by pixeldecals.com