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Discussion Starter · #1 ·
have been to dealerships 18time the keep tell me not wrong about my car . if I diver for long time getting off exit come to red light RPM go up and down surging and buck no code light 47 000 milese help me out and I have video too .
no clue what is wrong with it
 

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Discussion Starter · #7 ·
13NOX said:
Not sure if this is of help but you may have a DTC stored in history since you don't have a check engine light. An auto parts store could pull the code for you, if there is one, for free and that could give you a starting point.
okay im going to autozone today.. w'e did use code scan and no codes /pep boys told me go cost 89.95 put on computer .
 

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Discussion Starter · #9 ·
New to the Nox said:
Have you checked the throttle body to see if it is all gunked up/dirty? That is easy to get to.
Dirty throttle body can make the RPM jump up and down. Interesting that it does so after a long trip.
ya all clean .
 

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Discussion Starter · #12 ·
New to the Nox said:
I don't think so. MAS/MAP sensor gets gunked up it won't be able to tell if there is a higher flow rate of air because the dirt insulates the wires and the air can't cool the wires. MAS/MAP sensor, I would think, is more of a problem at higher speeds and the engine would run lean.
spark plugs ? .I check for air leak .no air leak
 

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Discussion Starter · #14 ·
New to the Nox said:
I don't think it's the spark plugs. Don't hurt to look at them though. Easy to do. Check out my reply out on this thread.
http://www.equinoxforum.net/index.php?topic=23978.0

You can look at the spark plugs and they will tell you alot. Good fowled spark plugs and look at pictures to compare.

I think it is fuel related but possibly transmission too.

By surging and buck, do mean that the car physically surges and bucks or just the rpm... Guess if it is in gear than yes the car is physically doing this.
I am wondering if it's not the transmission.
soon as I put in N ITS STOP no surging hmm ..
 

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Discussion Starter · #17 ·
New to the Nox said:
I did a search on this forum for the word "surging" and the threads usually talk about the camshaft actuator and high pressure fuel pump. But they don't described your exact surging issue.
In N and it stops... Wondering if it is a selanoid in the transmission.

I'm just a diy who is learning quickly about my newly purchased Nox.

Take it to ANOTHER dealer.

I am waiting on this this to come in the mail😂
https://www.amazon.com/gp/aw/d/B005NLQAHS/ref=ya_st_dp_summary
The torque pro app ($5) is as good as most shop's scanner.
Must have PC laptop or Android. Doesn't work with i-phone etc

3 diff Car Dealership time cant find any thing ..tomorrow take to new dealer ..what is this post to ? ask about scanner.tool
 

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Discussion Starter · #19 ·
New to the Nox said:
It a tool you might find helpful. Supposed to be as good as the $200 scanner. Bluetooth device to hook up to obdll and the app is torque pro (other brands available). You can have it live scanning your cars systems from O2 sensor to transmission temp sensors (should be able to tell the tourque converter lockup from that). You will have to reaching and learn what each sensor should read but for less than $30 you may have a better chance of success than the dealer does in finding the problem.

I should be getting it Thursday 😊 I love cheap but fun toys.let ask a ? If transmission flud is drity will make selanoid act up ,
 

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Discussion Starter · #21 ·
New to the Nox said:
Yes it can.
I just got my Nox with 58,000 miles on it. I had the transmission flushed. I gave the mechanic the fluid I wanted (used 12 quarts Valvoline full synthetic dexron vi to do the flush and fill)
It was cruddy and needed it.
Others here do a simple drain and fill about 3 times which will clean out almost all the old fluid. They drain and fill, run it for a hundred miles or a week, drain and fill and repeat once more. I will do that every 25,000 miles or so from now on. I wanted a flush this first time.
My shifting has greatly improved.
At 44,000 miles, probably should at least do a drain and fill.
Also, I drained and filled my transfer case and differential on my own. Very easy. They were really bad/dirty.
i guve that a try too
 

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Discussion Starter · #24 ·
spook said:
I would have put money on a dirty / sticky throttle body.

I might drop a can or two of good fuel system cleaner like Techron or Sea Foam in the tank, just in case an injector is not giving a good spray pattern.
i clean all .throttle body no dirty and MAF .. So would do you think it maybe?.im going let deal shoping clean transmission


throttle body was bad update..yay fix it
 

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Discussion Starter · #26 ·
New to the Nox said:
Thank you for the update! Was it dirty or needed to be replaced?
Hope this solves the issue.
replaced . still act up now go back to deal men this so much of headache..
 

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Discussion Starter · #29 ·
Nick24 said:
When the weather gets better i'm going to change my spark plugs, while i'm doing that I might as well clean the throttle body too as its right there when you take off the ECO box. Is there any good info on how to clean it? I've seen tooth brushes
maybe I change spark plugs but servie adisor told me to wait
 

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Discussion Starter · #32 ·
New to the Nox said:
Either the throttle body was not the problem or they didn't reset the computer. ...I think.

Do you have an Android phone? $5 app for torque pro and the obd2 scanner I linked to above is great!

There are many causes.
Google search and learn what O2 sensor readings and fuel trim readings should look like.
My fuel rail pressure runs from 400 psi at idle to over 2,000 psi under load. My mainline fuel pressure is around 50 psi depending on load.
You will be able to look at the maf sensor readings and many other readings.

For $26 total, you can figure this out and it will be better than spending money on parts you don't need and doesn't fix the problem.

okay .

I was able to rent a compression tester from AutoZone for free(with deposit) and it's easy to test the compression on this engine. Look up videos on it.

Your dealer doesn't know what is wrong obviously.

Good luck and let us and others reading this what happens.
:thumb:
 

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Discussion Starter · #36 ·
New to the Nox said:
He has the word "okay" in the middle of the quote.
He is still getting used to working with this forum 😊
car is fix now about time take 1 year to find problem no lies . no surging all fix now thank god..
 

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Discussion Starter · #40 ·
will act up again after coming off inrerstate come to stop light after long trips do 75mph on highway . :shrug:
 
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