IcyFridge Posted July 6, 2020 Report Share Posted July 6, 2020 (edited) I noticed something real interesting yesterday. When my AC is running and the engine is in Drive on my 2019 Edge; if you hold the brake and stay (like at a red light) the car will rock slightly. Turning off the AC (not fan) or shifting to P or R will stop it. Anyone notice this? It rocks from front to back, not sideways. I think it might be the load from the AC compressor. Edited July 6, 2020 by IcyFridge Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted September 6, 2020 Report Share Posted September 6, 2020 Only thing i can think of is, the fan is cycling on and off, causing the alternator to load the unload, which causes the enging to speed up or down, which puts more power into the drive train. Thus, the car tries to speed up, but the breaks (evil grin) are holding the car. Think of it like your stepping on tbe brakes and step on ghe accelerator. The front end will raise up. Let off and it drops again. Do this over and over and the car will seem to rock. Quote Link to comment Share on other sites More sharing options...
Snoking Posted September 6, 2020 Report Share Posted September 6, 2020 It is Ford's way to tell you not to disable the engine Auto-Start-Stop feature. Chris Quote Link to comment Share on other sites More sharing options...
IcyFridge Posted September 6, 2020 Author Report Share Posted September 6, 2020 5 hours ago, Snoking said: It is Ford's way to tell you not to disable the engine Auto-Start-Stop feature. Chris I despise the start/stop. I had it disabled via Forscan the first week, and now with the LMS tune it's disabled as well. Quote Link to comment Share on other sites More sharing options...
Snoking Posted September 6, 2020 Report Share Posted September 6, 2020 2 hours ago, IcyFridge said: I despise the start/stop. I had it disabled via Forscan the first week, and now with the LMS tune it's disabled as well. I despise it also! Probably will install the module in the center console at the switch. Quote Link to comment Share on other sites More sharing options...
2FAST4U Posted September 6, 2020 Report Share Posted September 6, 2020 (edited) 7 hours ago, IcyFridge said: I despise the start/stop. I had it disabled via Forscan the first week, and now with the LMS tune it's disabled as well. I asked LMS not to disable the start/stop feature as I prefer turning it on/off myself via the console-mounted switch. If it's automatically turned off because of the tune, there's no way to turn it on even if you press the switch. Claude Edited September 6, 2020 by 2FAST4U Quote Link to comment Share on other sites More sharing options...
MelissaInParts Posted October 12, 2021 Report Share Posted October 12, 2021 (edited) My 2020 Edge is doing the same thing. We found [somewhere else] online where a tech reset the PCM and TCM and that fixed the issue. However, our tech here (I work at a Ford dealership) cleared the transmission tables on mine - it fixed the issue for about 2 weeks (was completely gone). Now it is slowing coming back...more each day. By "more" I just mean it started coming back barely noticeable and is slowly increasing. He is now going to discuss with another senior tech to see what they are going to try next...he's contemplating updating the TCM this time. Any input from you folks? Edited October 13, 2021 by MelissaInParts Quote Link to comment Share on other sites More sharing options...
MelissaInParts Posted October 12, 2021 Report Share Posted October 12, 2021 P.S. I can only confirm these facts: 1. Only happens when A/C is on and stops/starts back when toggling A/C power 2. Switching off Auto Stop/Start does not affect it at all. 3. I have notice no RPM changes while it is occurring. 4. No Error Codes Quote Link to comment Share on other sites More sharing options...
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