MAP Sensor problem?

Aaronchev72 · 10-22-2009, 09:39 PM

Hello all, I have a '99 3/4 ton that started acting up last night. The check engine light came on and it was sluggish for a minute, then it ran like normal. I ran it around this morning and had the computer checked, the code that came up said the MAP sensor had low voltage or something. After the computer was hooked up the check engine light went off and it ran great till this afternoon. Again it ran real sluggish, wouldn't tach up like normal, then it ran like normal again. Does this sound like something that the map sensor would cause?? Also, i noticed that there was a connection unplugged on the fuel filter housing this morning and i reconnected it. But it is still connected so i'm sure that it can't be part of the problem. Will a new MAP sensor fix the problem? The truck is all stock with the exception of a K&N air filter, straight pipe, and a fass lift pump. Any imput will be great appreciated!

01quadcab · 10-23-2009, 01:00 AM

remove the map sensor and clean it. http://mopar.mopar1973man.com/tips/c...map-sensor.htm

Mopar1973Man · 10-27-2009, 03:08 PM

Quote:

Originally Posted by 01quadcab

remove the map sensor and clean it. http://mopar.mopar1973man.com/tips/c...map-sensor.htm

You might want to catch up a bit and read my article...

Quote:

Mopar1973Man Notes: This cleaning procedure will not correct any error codes that are being produced by the MAP sensor (P0237 or P0238). If you got a fueling enhancement box of any type hooked to the MAP sensor lines it could be a internal fault of the boost fooler circuit causing the MAP sensor error code. If the truck is stock then the MAP sensor requires replacement.

Then here is the diagnostics for MAP sensor codes...
http://mopar.mopar1973man.com/tips/c...nsor-codes.htm

Dinner · 10-28-2009, 11:25 PM

Could be something as simple as corrosion inside the plug as well.

Mopar1973Man · 10-30-2009, 02:28 AM

Any news to if you figured out you problem???

Aaronchev72 · 10-30-2009, 12:09 PM

Yeah, i ended up just replacing the sensor. Seems to have cured the problem. I read through the cleaning proceedure and gave it a try, but it didn't help so i just replaced it. No problems now! Thanks for all the advice guys!

10-23-2009, 01:00 AM	#2
01quadcab Senior Member Join Date: Jan 2009 Location: Shingletown ca Posts: 1,189 Points: 14,282 Thanks: 4 Thanked 63 Times in 59 Posts	remove the map sensor and clean it. http://mopar.mopar1973man.com/tips/c...map-sensor.htm __________________ 01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works

10-28-2009, 11:25 PM	#4
Dinner Junior Member Join Date: Mar 2009 Location: London, Ontario Canada Posts: 90 Points: 2,722 Thanks: 0 Thanked 5 Times in 5 Posts	Could be something as simple as corrosion inside the plug as well. __________________ 2001 Dodge 2500 4X4: Goerend, TST, Smarty, MVP, BD Rad, Injectors, Two Turbo's, Snow Performance, Supporting Mods... 12.7 @ 108mph Aug 2011 Canadian Club Member #14

10-30-2009, 02:28 AM	#5
Mopar1973Man 2nd Gen Guru Join Date: Dec 2008 Location: New Meadows, Idaho Posts: 2,641 Points: 27,077 Thanks: 9 Thanked 140 Times in 131 Posts	Any news to if you figured out you problem??? __________________ Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser 116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!

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10-30-2009, 12:09 PM	#6
Aaronchev72 Junior Member Threadstarter Join Date: Nov 2006 Location: Brockway, Pa Posts: 22 Points: 690 Thanks: 2 Thanked 0 Times in 0 Posts	Yeah, i ended up just replacing the sensor. Seems to have cured the problem. I read through the cleaning proceedure and gave it a try, but it didn't help so i just replaced it. No problems now! Thanks for all the advice guys!

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