2003 Trailblazer No Mass Air Flow Sensor, Then What Are These?
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- Опубліковано 14 тра 2019
- In response to a question on a previous video, linked below: A quick run down of all the sensors on the air intake / cleaning system. There is no MAF (Mass Air Flow Sensor) on the older version of these Chevy Trailblazers until around 2006ish (Don't quote me on the year). But there are some sensors to know about, they just hardly ever need replaced.
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That motor is a 4.2. And yes it does have a mass air flow sensor text closest plug to the filter itself. And if you want your vehicle to perform properly after you clean a throttle body or do anything on that Chevy you need to disconnect the negative battery terminal so when you plug it back in the computer will tell you that you did a change to it no matter what it is
You are right. The one I bought from Rockauto is going back. They said it would fit my 2005 Trailblazer I6 4.2 liter. Wrong.
4 years later and helped me learn that isnt a maf but an air temp sensor. just ordered a new one. thanks!
My 2003 GMC Envoy XL (basically a Chevy Trailblazer) would stall at stop signs and eventually stalled out resulting in requiring starting car up at stops. Cleaned the throttle body with throttle body cleaner and completely resolved issue.
Ya, I have an '02 Olds Bravada, and it too is running around without a MAF sensor; this is a MAP sensor ONLY setup; good thing too. A new MAF sensor could cost up to 15 times as mush as a simple MAP sensor; on Amazon the MAF sensors for newer GM (Trailblazer, Bravada, Envoy, etc) are up to $150, whereas the MAP sensor for my vehicle is only $12. Thanks for the video!
Intake Air Temperature Sensor
I have a 2004 envoy with no mass air flow sensor. I'm a mechanic so i know where thing's are or normally are but this one doesn't have one and I've went as far as going through wiring system to make sure hasn't been eliminated. Nothing so guess it is what it is not sure why some have them some don't but this model is an xuv so assuming maybe that's why maybe where it was built for north or south. I worked in a factory for 20 years and it definitely makes a difference how the part is rust proofed or whatever depending on where its going in the country up north everything got a better grade of paint but its more or less a better grade rustproof coating. I've never seen a gmc after early 2000s without mass airflow sensor. So been trying to make sense of it. Specially since costumer is having symptoms that mass air flow sensor causes lol
I may suggest if you have a Chilton repair manual it will show you illustrations of where all your sensors and vacuum and everything is. I work on all types of vehicles periodically I even have a 07 Trailblazer that I maintain
I just needed to verify that i wasnt going crazy about that being the map and not a maf..just like no egr valve like i explained down before..and not many videos on bravadas. Have to watch a trailblazer or envoy video instead lol thanks for the explanations.
Eyvo auto. I have a question for you. Where can I find the pcv valve for that kind of truck? Mine it is also a 2005 6 cylinders inline 4.2 2wD. According to this one on your video there are some differences in the air resonator. Mine doesn't have the vacuum line inserted on the right side of it. Only underneath of it. But I can't find no pcv valve.
Thank you so much for this video!! Extremely helpful!! Now i can finally get my Envoy on the road!!
Thanks I appreciate you.
Will they supposed to have a power that wire
My engine icon is on and I don't know which sensor to replace. This is a 2003 Chevrolet Triblazer. Would you help me? Thanks.
Good day from Egypt
The box connected to the throttle body is called the silencer
I believe you might need a o2 sensor. There's a up stream and down stream
I tested that wiring they don't have no power my envoy 03 4.2
2006 has a MAF but doesn't that IAT.
I need help with my trail blazer