Another Range AFM Delete Question
Instructor
Joined: Aug 2016
Posts: 243
Likes: 52
From: Wake Forest NC
I have a 2016 Z06 and the Range module threw its first CEL while I was on vacation (about 4 months after I bought the Z). Two weeks later it happened again.
Unplugging the Range and restarting the car will clear the DTC (loss of communications with TCM) and resume normal operation but the CEL won't extinguish until after several starts without fault are completed.
I usually drive in manual mode but I did use the Range today. I have a switched OBD-II extension plug and I turn it on a few seconds after starting the car and used that way it never has a problem.
Unless you want to play torque converter roulette I would either deal with the Range shortcomings or drive in manual mode. The wear that results in excessive RPM fluctuation and shudder only gets worse with time.
It is inconvenient to switch the Range module on and off AND you can add a simple external circuit to do this for you automatically but regardless of Range operational shortcomings I would rather deal with minor Range inconvenience than the major transmission operation inconvenience brought to us by a major GM screwup.
Unplugging the Range and restarting the car will clear the DTC (loss of communications with TCM) and resume normal operation but the CEL won't extinguish until after several starts without fault are completed.
I usually drive in manual mode but I did use the Range today. I have a switched OBD-II extension plug and I turn it on a few seconds after starting the car and used that way it never has a problem.
Unless you want to play torque converter roulette I would either deal with the Range shortcomings or drive in manual mode. The wear that results in excessive RPM fluctuation and shudder only gets worse with time.
It is inconvenient to switch the Range module on and off AND you can add a simple external circuit to do this for you automatically but regardless of Range operational shortcomings I would rather deal with minor Range inconvenience than the major transmission operation inconvenience brought to us by a major GM screwup.
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
I received the latest Range AFM Beta device last week while I was away on business. I hope to put some miles on it over the coming weeks, hopefully they have the CEL issue finally resolved!
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
Someone recently posted where they use the extension cord but they wired the power on the cord to a switched accessory location. So now they have no switch, it just turns on when the power comes on for the car. Eliminates the worry about battery drain and potentially the CEL issue if it's power related. I'll try to find that post and see if they have a current update.
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
Here's the post. There are two versions in the post. One wiring it to an accessory/switched power source. Then another which inserts a time delay relay for the startup.
https://www.corvetteforum.com/forums...h-the-car.html
https://www.corvetteforum.com/forums...h-the-car.html
Banned Scam/Spammer
Joined: Nov 2014
Posts: 1,583
Likes: 381
That's probably because people assume that all Diablo products change the tune, which isn't true. The S1000 is the Range AFM equivalent, and it's OBD2 port based, no tune alterations.
I just spoke with them, and I'm going to give their s1000 device a try. I'm not seeing any feedback about CELs on theirs, so I'll see how it goes. They have a 30 days return policy.
I'll report back with results.
I just spoke with them, and I'm going to give their s1000 device a try. I'm not seeing any feedback about CELs on theirs, so I'll see how it goes. They have a 30 days return policy.
I'll report back with results.
Burning Brakes
Joined: Jul 2005
Posts: 836
Likes: 89
From: Tucson Az
2017 C7 of Year Finalist
I looked at Diablo's web site and they don't list a unit for the 2017 corvette. I would gladly lay down the 200.00 if the unit works without CEL and turned off on its own. And of course didn't goof with the warranty.
Team Owner
Joined: May 2004
Posts: 31,787
Likes: 2,413
From: DFW/Long Island
They also have a 30 day return policy, so it's easily returnable if it doesn't work.
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
Popped it in prior to start. Drove about 2.5 miles, shut it down for about 15 min. Then drove back about 1.5 miles, shut it down for about 20 min. Then drove a couple blocks, shut it down for min. On restart I had a CEL.
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Melting Slicks
Joined: Nov 2016
Posts: 2,274
Likes: 621
From: Los Angeles CA
Just posted my own question about this. We herds tend to move in the same direction ;-).
In any case, I looked around the interwebs and found no mention of anyone using the diablo with a corvette. There's tons of results for silverado trucks and other cars. Keeping my pessimism silent until the next dissappointment...
In any case, I looked around the interwebs and found no mention of anyone using the diablo with a corvette. There's tons of results for silverado trucks and other cars. Keeping my pessimism silent until the next dissappointment...
I don't think the circuitry is in question, it's the firm/software. I've been scouring websites looking for negative reviews or any that mention CEL problems with the Diablo product and I can't find any, but then again, I've only been looking for a short time, I'll keep looking.
Device should be here by Tuesday, so don't look for updates before then.
Device should be here by Tuesday, so don't look for updates before then.
Drifting
Joined: Jul 2016
Posts: 1,481
Likes: 394
From: Virginia Beach Virginia
I switch the Range on after the car is started and backed out of the garage or if in a parked position after it has obtained a steady idle. I switch the Range off when it is in a parked position and still running, and than I switch off the ignition. So far no CEL problems. Have used the Range for the past 300 miles or so. Car is a 2016 and has about 2300 miles.
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
From what I know from Range, the remaining issue seems to be with 2017+ vehicles. You have a routine now, but if you're certain you're on the latest production release of the Range stuff you may not have to shut on and off like you're doing.
Team Owner
Joined: May 2004
Posts: 31,787
Likes: 2,413
From: DFW/Long Island
I have a 2017 GS and the range unit was on the latest firmware 8.2R, and it was causing CELs, that's why I returned it.
Race Director
Joined: May 2001
Posts: 15,323
Likes: 2,077
From: Guelph, Ontario
If Range (or somebody else) doesn't solve this issue, I might be tempted to play warranty roulette and just have AFM tuned out. Chances are slim that I would have a warranty claim on the LT1 and if AFM is 100% disabled I would hope the chances of a warranty claim on the A8 might also be slim.
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,039
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
Happy that you have a 2017 GS like I do, which the betas from Range still are not solving the problem. The last one I got threw a CEL after 3 starts....didn't take long.
Naples FL
Joined: Jun 2010
Posts: 1,383
Likes: 175
From: FL
Thunder22, yes please, if you give the Diablo unit a try, let us know how it compares to the Range. I am afraid that if the two brands use the same circuit board internally, perhaps bought from an outside supplier, they may be identical. If some one has used the Diablo for a while with no CEL's set, maybe it is a different and better unit. I noticed that they are the same price.
Team Owner
Joined: May 2004
Posts: 31,787
Likes: 2,413
From: DFW/Long Island
That's not true, i had a range with the latest version 8.2R before i sent it back 2 weeks ago. It caused CELs on my 2017 GS.
Team Owner
Joined: May 2004
Posts: 31,787
Likes: 2,413
From: DFW/Long Island