OLD NAVY: Tech Discussion of MAP Sensor/Boost Pressure Senso

Kniggit · **Posted:** Mon Jun 09, 2008 2:55 pm

I just cleaned the Map sensor on my wifes 06 it had 21,000 on it and it has not mods at all. the first Time I cleaned it at 6,000 it was sticky and nasty, but this time it was Dry and not near as much Build up.

K

kntrygurl · **Posted:** Wed Jun 18, 2008 3:08 pm

Cleaned my MAP yesterday and since i have only had it for three months and it has 42K on it i had nothing to go by on how dirty it was. However it was dry soot and a lil brake cleaner cleaned it right up.

jmoomaw · **Posted:** Tue Sep 16, 2008 11:56 am

Just bought a '05 CRD. It threw...PO299, PO401, PO107. the PO401 is gone with a replacement of the EGR valve. The other two keep coming back. The MAP is crusty and wet....wetter now that it is soaking in Diesel. I looked at the pictures for the CCD (?) and I can't tell if there are springs or "O" rings. Springs make me nervous given the postion of the bolts to remove it. I would hate to drop anything down into the engine.

Are they "O" rings as I hope?

Back to scrap off more crud....
Jim

ATXKJ · **Posted:** Tue Sep 16, 2008 1:38 pm

The CCV - Closed Crankcase Ventilation system - doesn't actually need the valve cleaned - you just need to stop the oil that comes out of it - from going to the intake system - some folks do 'EHM - Elephant Hose Mod' - which vents to atmosphere - some do a Provent - which puts a trap in the line that needs to be cleaned periodically.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=22703

Also the P0401, P0299 tend to be focused on the EGR/FCV - although someone else mentioned the turbo hoses - they'll split from the oil in the intake.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=34886&highlight=p0299
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=26489&highlight=p0299

P107 - sound like MAP sensor problem
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=25049

johnyrr · **Posted:** Tue Sep 16, 2008 3:55 pm

I just bought a 06 with 17K miles. when I got it home I pulled the MAP sensor and it was caked more than those pictures with half the miles. Ive since done the Elephant and ORM mods. Has anyone ran water/meth injection or just water on one of these to clean the manifold and intake system over time? I have a Jetta TDI and over at Tdiclub some say it is great at keeping the intake clean. I am just wondering if anyone has tried it on our CRD?

johnyrr · **Posted:** Tue Sep 16, 2008 3:56 pm

I just bought a 06 with 17K miles. when I got it home I pulled the MAP sensor and it was caked more than those pictures with half the miles. Ive since done the Elephant and ORM mods. Has anyone ran water/meth injection or just water on one of these to clean the manifold and intake system over time? I have a Jetta TDI and over at Tdiclub some say it is great at keeping the intake clean. I am just wondering if anyone has tried it on our CRD?

hankdz · **Posted:** Tue Dec 30, 2008 5:46 pm

Thanks for the great how-to and pictures. I just completed cleaning our little 06 with 27,000 miles. Not known whether cleaned previously we purchased it with 22,000 miles last summer. Had small amount of gunk but mostly loose soot. Cleaned up easily with spray intake cleaner. Used about a quarter of a can. Did remove cable tray so I could get at the sensor. Hands too big to fit otherwise. Took advise and did not remove wires to sensor until I had it off the manifold and safely in my hands. Magnet advise also followed and no lost washer.
Thanks again.
Hank
PS
As soon as the little beasty is off warranty I'll tackle the SEGR and elephant trunk mods.
Thanks
H

CRD Joe · **Posted:** Wed Apr 22, 2009 1:26 pm

I plan on doing this as soon as I buy my CRD. I plan on
cleaning this and then adding a E. hose and ORM before I drive
the truck home. I suspect Ill be picking the truck up somewhere
nation wide. Should I bring break cleaner or intake cleaner with
me?

dog_party · **Posted:** Wed May 20, 2009 5:40 pm

CRD Joe wrote:

I plan on doing this as soon as I buy my CRD. I plan on
cleaning this and then adding a E. hose and ORM before I drive
the truck home. I suspect Ill be picking the truck up somewhere
nation wide. Should I bring break cleaner or intake cleaner with
me?

Shopping list for you -
EHM:
4" length of 3/4" Inner Diameter tube (clear seems to be the popular choice)
Zip ties
Hose clamp(s) if you want them (I just used zip ties)

ORM:
Your hands

Cleaning MAP:
4mm allen wrench
Non-chlorine brake parts cleaner (or some other cleaner listed)
Magnet

I think that's about it.

RAF 3829 · **Posted:** Sun May 24, 2009 11:40 am

Just cleaned the MAP on mine for the first time, a little over 40K on it.

tugdrivinj · **Posted:** Sat Aug 22, 2009 4:39 pm

anyone have the specs on the 4mm allen screw? my dad just took his out to clean it and the screw has gone a missin.

ATXKJ · **Posted:** Sat Aug 22, 2009 5:36 pm

small - I think it's 05010858AA - at least that's what it look like on the diagram - but no idea of real size
if you have a generic collection of Metric screws - you could probably match it.

Glend · **Posted:** Sat Aug 22, 2009 6:02 pm

If that screw has gone missing you better be very very sure it has not fallen into the sensor hole (which is a real possibility). Mount a search for the thing, I dropped mine once and found it on top of the transmission housing wedged in a casting rib. If it has gone down that sensor hole it may find its way to an intake valve (think $$$$$$).

tugdrivinj · **Posted:** Sat Aug 22, 2009 9:48 pm

thanks for the input, but false alarm the offending screw was found and everything is back together

flyboy · **Posted:** Sun Dec 13, 2009 11:06 pm

0311_DoC wrote:

So what do you clean this with? just soap and water or simple green ????

Try a good quality carby cleaner,worked well for me.

drtydzel · **Posted:** Wed Jan 06, 2010 12:42 pm

Cleaned my map sensor the other day now my mileage went down to like 20 from 25 mpg do i need to do anything else to reset the computer or anything thanks in advance for the help im sitting at 49,500 miles.

jksuperstar · **Posted:** Wed Jan 13, 2010 8:44 pm

Cleaned at 60k miles. I have no idea if it was ever cleaned before this (as I just got it), but it was 1/2 way between pic 3 & 4 in the original post (crud filled, but not outside the sensor cage). Brake-Cleaner zapped, and it's now clean & shiny looking brass.

linewarbr · **Posted:** Wed Feb 24, 2010 10:46 am

Bump to stay relevant

dac44444 · **Posted:** Sun May 09, 2010 9:21 am

Pulled mine last night with 58K miles and it was caked in sludge. Cleaned with brake cleaner and went for a drive no more limp mode hura!

TXriverrat · **Posted:** Tue May 25, 2010 12:45 am

Finally cleaned mine today 64k. I have been rolling with only ORM for a while but just did the EHM and decided it was time for this too. Mine was caked and oily. Used some paint thinner with a tooth brush, swished sensor around in some paint thinner for a while, then rinsed it off with some soap and hot water put her back on a took a short ride down the street. Can't tell much of a difference yet but I'm sure it wasn't sensing much. If I see any dramatic improvement I will post again.

She runs like a dream now!

OLD NAVY: Tech Discussion of MAP Sensor/Boost Pressure Senso

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