MAP Sensor Cleaning - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > OEM Issues

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Old 08-12-2008, 12:33 PM
02NYenvoy's Avatar
02NYenvoy 02NYenvoy is offline
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2002 GMC Envoy SLT
Black 4.2L I6 4X4
Join Date: Aug 2005
Location: Queens, NY
Posts: 66
MAP Sensor Cleaning

I am in the process of tracking down a slight hesitation problem. Noticed that the MAP sensor has oil from the drop-in K&N filter. What's the safest way to clean the sensor?
02 Envoy SLT 123k
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Old 08-13-2008, 01:02 AM
wardak33's Avatar
wardak33 wardak33 is offline
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2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Nov 2007
Location: Schaumburg, IL
Posts: 2,369
i had an attempt to clean in too, but someone on stated that the MAP sensor is a closed sensor and cannot be cleaned...i'm still going to give it a try though. When you do clean it, make sure you use MAF/MAP Cleaner and make sure its completely dry before putting it back in.
2002 Oldsmobile Bravada: 4.2L I6 w/ G80 Locker, AWD, TBSS springs, HD bilsteins, 6000k HIDs, Mobil1, Iridium Plugs
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Old 10-18-2009, 06:41 PM
cgallo cgallo is offline
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2003 Chevy TrailBlazer LTZ
Liquid Silver Metallic 4.2L I6 4X4
Join Date: Oct 2008
Location: Medellin, Colombia
Posts: 69
Today, I cleaned MAP sensor, carefully, I Unplug from the Intake, specially with the 2 Plastic Brackets Of the Body of the Sensor, I Cleaned with Electronic Contact Cleaner inside the Little Hole and Shook until no liquid go out from it.

I conect it to the Intake and run the car, It runs fine.

I did do tracking down a better milleage, I cleaned the IAT Too.

Cesar Gallo
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Old 09-27-2013, 11:29 AM
Tainstve Tainstve is offline
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qwerty qwerty qwerty
qwerty 6.0L LS2 V8 2WD
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Location: Palo Alto, USA
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This post is*very*informative.*Thank you!

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