Powetrain Malfunction / Reduced Power

[Garrett]

Just happened to me while driving 65 on the highway. Truck lurched back a couple gears on me and since has been in slug mode. Won’t barely go over 2k rpms and into 10th gear.

also threw a forward collision warning malfunction error.

Any ideas?

 

[99WhiteC5Coupe]

Just happened to me while driving 65 on the highway. Truck lurched back a couple gears on me and since has been in slug mode. Won’t barely go over 2k rpms and into 10th gear.

also threw a forward collision warning malfunction error.

Any ideas?

Under warranty? Tow it to the dealer for repair.

 

[JExpedition07]

There’s going to be stored codes whenever the wrench is thrown on the dashboard.

 

[AAOO]

Limp mode. Could be something major or just a computer glitch. Does it stay in limp mode if you turn it off. Get out. Lock the doors. Wait 5 minutes??? Then open and start.

 

[AAOO]

See this:

https://www.expeditionforum.com/threads/2019-expedition-limp-mode.40665/

 

[Garrett]

Parked it for 3 hours for dinner, got back tuned it on and it ran fine. No errors.

 

[Rick Anjel]

Same happened to me with only 95 Miles on it. Turned it off and on and worked fine, has never happened again.... just hope it was a one time ECU glitch.......

 

[Garrett]

Should I still bring it up to the dealer? My engine is tuned with 5Star...

 

[Deadman]

Should I still bring it up to the dealer? My engine is tuned with 5Star...

After you remove the tune you could. Or call 5 star first.

 

[Garrett]

Just happened to me again. 7 days after the first occurrence.