12-29-2019, 09:08 PM | #1 |
Drives: 45th anniversary camaro ss Join Date: Sep 2014
Location: South Carolina
Posts: 131
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AFM delete
I tuned out the AFM with Hp tuners. My engine light is on, and if I turn if off and start the car. The light comes back on and the oil pressure gauge drops and the engine shuts down. After restarting the light is on, the oil pressure is normal and it's runs fine. Any suggestions on what might be the problem.
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12-29-2019, 09:56 PM | #2 |
Drives: Never just fly under the radar Join Date: Jul 2015
Location: Kansas
Posts: 1,531
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Thought the cams for AFM are ground special for AFM. Doesn't seem like you could just turn it off
Yes I've heard people do and sell devices to do so, but I think you need the supporting mods first
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12-30-2019, 07:50 AM | #3 |
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While there may be a cam difference between the LS3 and the L99 (AFM/VVT variant), the real difference is in the lifters (8 of them) that are controlled by the computer. The computer commands 4 electric solenoids that either allow or block oil passage to those lifters, thereby controlling the valves for those cylinders.
Did you do anything mechanically to the engine when you were disabling AFM? Just using HP Tuners to disable AFM should not have caused any type of oil pressure issues, IMO. To me, that sounds like a mechanical issue of some sort. Can you post your tune file for us to check out? |
12-30-2019, 08:34 AM | #4 |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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Disabling it in the ECM shouldn't effect anything else. You might have another issue to look at. Start with that cel you got, you should be able to read it with your HP tuners.
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12-30-2019, 08:49 AM | #5 |
Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,092
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How did you do it? Did you just switch DOD to disabled in the tune, save it and call it a day?
That shouldn't have affected anything. That's how I have my winter tune set up.
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LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS |
12-30-2019, 10:51 AM | #6 |
Drives: 45th anniversary camaro ss Join Date: Sep 2014
Location: South Carolina
Posts: 131
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I did the delete over six months ago, it's on my son's car and there are no drivability issues at all. Only upgrade is long tube headers. I'm going to enable the AFM and see what happens with the engine light.
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12-30-2019, 10:54 AM | #7 |
Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,092
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What's the CEL? If you have long-tubes, is it a catalytic code? Or is the car leaning out too much? Did you tune for the long-tubes?
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LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS |
12-30-2019, 11:03 AM | #8 |
Instagram: Sangstah
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A lot of people tune out AFM so that shouldn't be an issue. I would start with getting the code read and go from there.
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2019 SS 1LE - "CaSSandra" 2014 SS - "AleSSandra - Sold" 94 Z28 - Sold
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