Clean those MAP sensors!

Saber · **Joined:** Fri Jul 07, 2006 10:48 pm **Posts:** 160

This is something I have been meaning to do, but never got around to. Now @40k I thought it would be a good idea to do.

Anyways here's a pic. NASTY

DarbyWalters · **Posted:** Fri Apr 20, 2007 4:55 pm

You are not allowed to show the DIRTY ONE without showing the CLEANED ONE :wink:

dgeist · **Posted:** Fri Apr 20, 2007 5:20 pm

DarbyWalters wrote:

You are not allowed to show the DIRTY ONE without showing the CLEANED ONE :wink:

think he cleaned the sand off too... or left it as a battle scar?

Seriously, that's nasty. I'm glad I got mine at 12.5k.

Dan

Universeman · **Posted:** Fri Apr 20, 2007 5:23 pm

Good info but could you snap a shop of where it came from, I could prolly figure it out myself but hey what good is a forum if we don't share the info right?

Saber · **Joined:** Fri Jul 07, 2006 10:48 pm **Posts:** 160

To late it's back in. Next time I do that those hose are going to get moved. That was a pain in the butt with them in the way.

And yes I got the sand off it :lol:

BVCRD · **Posted:** Fri Apr 20, 2007 5:30 pm

Universeman wrote:

Good info but could you snap a shop of where it came from, I could prolly figure it out myself but hey what good is a forum if we don't share the info right?

Full photo shoot for your enjoyment in the CRD FAQ section.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Universeman wrote:

Good info but could you snap a shop of where it came from, I could prolly figure it out myself but hey what good is a forum if we don't share the info right?

Check the FAQ

Sir Sam · **Posted:** Fri Apr 20, 2007 5:33 pm

mine was dirtyer, much more soot and then all covered in oil.

Saber · **Joined:** Fri Jul 07, 2006 10:48 pm **Posts:** 160

I touched it and a chuck came off. From the FAQ it looked like a dry soot. This was wet and oily

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Saber wrote:

I touched it and a chuck came off. From the FAQ it looked like a dry soot. This was wet and oily

For the reason for the difference, check the FAQ on the EHM.

BVCRD · **Posted:** Fri Apr 20, 2007 6:00 pm

Saber wrote:

I touched it and a chuck came off. From the FAQ it looked like a dry soot. This was wet and oily

Mine was the way you described. More oily vapor circulating around than Elephant guys.

chadhargis · **Posted:** Fri Apr 20, 2007 6:01 pm

After only 9700 miles, mine looked the same. That stuff is hard to get off too. Used "sensor" cleaner from Advanced Auto. That alone didn't do it. I had to take a toothbrush and lighty brush it.

BVCRD · **Posted:** Fri Apr 20, 2007 6:03 pm

chadhargis wrote:

After only 9700 miles, mine looked the same. That stuff is hard to get off too. Used "sensor" cleaner from Advanced Auto. That alone didn't do it. I had to take a toothbrush and lighty brush it.

I blasted mine with brake parts cleaner. Leaves no residue and the force out of the can was like a car wash spray.

BiodieselJeep.com · **Posted:** Sat Apr 21, 2007 10:11 am

Saber, that thing is WAY oily. Get the Elephant hose or a provent on that beasty. Just did mine and it was only sooty, not oily. Sorry, I didn't take a pic, but it looked uch different than yours. Hopefully now with the Off Road Mod no egr) there won't beany soot next time.

I am SO in love with the ORM that I think I need a bumper sticker or something.

Saber · **Joined:** Fri Jul 07, 2006 10:48 pm **Posts:** 160

yea I'm going to do the provent now the warm whether is here. No garage sucks :roll:

I just had to undo the ORM, and clear the code with the scanner

. My ball joints came in so it goes to the dealer on Monday

kccrd · **Joined:** Thu Mar 08, 2007 10:35 pm **Posts:** 267

Where is the map sensor located?

dgeist · **Posted:** Tue Apr 24, 2007 9:29 am

kccrd wrote:

Where is the map sensor located?

http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=15249
...well, it's not actually located at that link

The link has full instructions, but the short answer is: Bolted into the top of the intake manifold with one allen-head bolt on the driver's side rear (closest to the firewall) just under the plastic engine cover.

kccrd · **Joined:** Thu Mar 08, 2007 10:35 pm **Posts:** 267

Thanks for the quick reply. Just found it.

gsbrockman · **Posted:** Fri May 11, 2007 11:56 pm

The 2005 Jeep Liberty Limited 4x4 CRD just turned over 29,382 miles this evening. It was time for the new OEM oil filter, 5W40 Rotella-T, and the OEM fuel filter change, in addition to a tire rotation and pressure check.

While I was draining the oil, and after I'd rotated the tires, I decided to check my MAP sensor.

One word : NASTY !

I had printed out the pics from the FAQ Thread {very helpful, I might add} on my lunch break at work so I'd be better prepared for the task. It was indeed a piece of cake. Mine had never been cleaned, and it had 29k miles worth of crud to prove it.

I used some Valvoline Synthetic Throttle Body / Carb Cleaner (I keep it around for the throttle body of my 2004 Dodge Neon SXT---it's safe for "coated" throttle bodies) and it cleaned up nicely.

My fuel economy had been down since December, but I attributed it to #2 winter blend and the F37 that was performed late December. I think the dirty MAP sensor has been the real culprit all along.

I can't wait to burn up another tank of #2 and compare the results.

For those of you that have not cleaned or checked your MAP sensors, do so ASAP ! You'll be amazed !

Greg

fatweasel · **Posted:** Sat May 12, 2007 7:20 am

I cleaned my MAP senser a wekk or so ago. Like most, it was totally caked up with crap. I scrubbed it as best I could with a toothbrush, but did not use any type of cleaning spray.

To get the improved mileage performance, do you think that the MAP senser needs to be spotless, or just get the major crud of of it and out of cage?

Clean those MAP sensors!

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