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AFM/Range Question

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Old Oct 18, 2022 | 01:04 AM
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Default AFM/Range Question

I have not seen this in any of the prior threads. I have a Range device. It works great. Took it out in advance of a smog check in a few days. Not that I'm complaining, but the AFM does not seem to be functioning. Just wondering if anyone else has had this issue. Thanks.
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Old Oct 18, 2022 | 01:52 AM
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Originally Posted by jcwallace54
I have not seen this in any of the prior threads. I have a Range device. It works great. Took it out in advance of a smog check in a few days. Not that I'm complaining, but the AFM does not seem to be functioning. Just wondering if anyone else has had this issue. Thanks.
I maybe wrong, but, the oily thing I can remember recently was in this thread.

https://www.corvetteforum.com/forums...post1605680496
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Old Oct 18, 2022 | 09:28 AM
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It is rare but these do fail from time to time. I had one crap out and freaked out the car's computer system! I got all sorts of errors and it went into limp mode. Luckily once I took it out, all I had to do is clear all the error codes and the car was fine. The funny thing, Range sent me a replacement and that didn't work! After plugging it in the car wouldn't start! So they sent me another one which was fine. The one currently in my new (to me) Grand Sport has been fine. Like I said, it's rare that these fail, but it can happen.
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Old Oct 18, 2022 | 11:35 AM
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Just to clarify......the range device is out of the car and now you don't see it go in to 4 cylinder mode ??

I have used them in 3 C7's and they have never caused this problem.
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Old Oct 18, 2022 | 12:05 PM
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No AFM in manual mode, is that where you were testing it in?

Last edited by kiki 1; Oct 18, 2022 at 02:57 PM.
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Old Oct 18, 2022 | 01:28 PM
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Originally Posted by dyoung
Just to clarify......the range device is out of the car and now you don't see it go in to 4 cylinder mode ??

I have used them in 3 C7's and they have never caused this problem.
So that's a good thing but strange with range removed.
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Old Oct 19, 2022 | 06:25 PM
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Originally Posted by dyoung
Just to clarify......the range device is out of the car and now you don't see it go in to 4 cylinder mode ??

I have used them in 3 C7's and they have never caused this problem.

Correct. Took the Range out and it is not going into 4 cyl mode.
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Old Oct 19, 2022 | 06:26 PM
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Originally Posted by kiki 1
No AFM in manual mode, is that where you were testing it in?
Sorry. Should have said in OP - this is an A8 car.
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Old Oct 19, 2022 | 06:59 PM
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Took my range out today and it went in and out of 4 cylinder mode as it should.

You have a weird problem there.
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Old Oct 19, 2022 | 10:48 PM
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I have an A6, and when I remove the Range AFM Eliminator it goes in and out of 4 cylinder mode.
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Old Oct 26, 2022 | 01:44 AM
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Default Update

Apparently, the AFM is still working. On a recent drive, I was scrolling through info screens (Touring Mode & Display) and on the screen that displays current range and current fuel economy I noticed the green "V4" icon was displayed (I was on the freeway). I have not checked the other displays (i.e. Sport, Economy, Track). Not sure why it is different now than when I purchased the vehicle.
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