Hi Guys and girls Help!! My Accelerator stuck in limp mode. I have been to 6, yes 6 mechanics, and everyone says they cant work it out so please help. 1) Accelerator in Limp Mode 2) Battery light was on the dash. Replaced Battery Replaced Alternator Light goes off on dashboard and now there is no acceleration not even in limp mode checked wiring checked ECU still nothing please help.

Replacing accelerator cable and gearbox cables would have no bearing on this, and replacing the fuel pump and injectors likely not going to help. Is the vehicle overheating? That is the place to start as overheating can cause Limp Mode.

Or you find a local auto electrician to connect a professional grade scan tool computer to check for Diagnostic Trouble Codes and historical data. It sounds like the dealership don't have a clue. A pro scan tool can record what happens when it goes into limp mode.

Make sure there is no air in the cooling system

https://www.fixya.com/cars/r29872074-vehicle_cooling_system_no_heat

https://www.google.com/search?q=2018+hyundai+h100+limp+mode+problems

https://www.google.com/search?q=auto+electrician+near+me

..

Yes, that is the whole idea of Limp Mode. It limits you to first and second gear so you can limp slowly to the nearest garage without causing catastrophic damage to the engine. What you need to do is connect a good quality DTC code reader scan tool and see the real reason that Limp Mode has been engaged.

https://www.google.com/search?q=1999+jeep+cherokee+limp+mode+causes

..

hello
u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store
the girl in the chat box can help u instantly... im a frequent buyer there since Im a mechanic so take help from there

My friend is a part time mechanic he gets his solutions from www.reliable-store.com he gets from their every single detailed info, instructions, diagrams, error codes, troubleshooting, transmission etc. everything
on all vehicles, and factory manuals for service, repairs, parts, owner's, operations, maintenance etc.
U can get help from there
there is a girl at chat she can help you

With engine off tap the accelerator pedal several times on and off quite hard , this will free up the electronic mechanism that controls the amount of fuel going to the engine.Now start car ,your engine management light(usually yellow) should go out and the limp mode of car will switch off and resume normal driving.If still in limp mode will need error codes deleting from ecu by garage.

d/c battery for a spell. then reconnect it and stat up without touching the accelerator pedal. Let it idle and warm up and then drive it normally. If no help then consult check engine codes to see what caused it to go into limp mode.

Sure will happen,second gear is the "limp " mode if the Tcm sees a problem with the tranny. Key on,off ,on,off,on will flash the codes with the check engine light. That will point you in the right direction.
Can't recall how to reset the limp mode,thinking it's key on engine off ,press gas to the floor 3 times within 5 seconds. If a speed sensor goes bad they will do just that,many other problems will also tho. So check for codes first,if there are none it will flash a 55 .That is five flashes of the engine light then a pause then 5 more.

P 1751 Shift Solenoid" A" performance. The solenoid is part of the transmission valve body and yes if this solenoid fails you will get limp mode.The only solution is a new solenoid may be even the wires to it or even the transmission module

have the mechanics checked the egr valve and the vacuum lines and hoses. like vac leaks, n75 bad, vnt sticking, intake sooted, egr passing, and sooted up exhaust turbine. Bad Maf (Oxygen Sensor)
Leak in the vacuum system
Faulty N75
Bad actuator
Dirty gummed up turbo causing variable vanes to jam or stick

it can be any of above symtoms. hope this steers you in the right way. have a good day !!

unhook the battery for about 15 minutes and hook it back up... that should reset it