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Limp Mode No Codes

bartman555

New Member
Joined
June 26, 2020
Messages
6
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0
City, State
Springfield
Year, Model & Trim Level
2003 Sport Trac XLT
I have an 03 Sport trac with a 4.0 that I recently rebuilt the engine and transmission. The truck is in limp mode and has me scratching my head. It won't go more than 25mph and 2000 rpm and there are no codes. I've replaced the throttle position sensor which did nothing. If you have any relevant experience please share
 






Fix4Dirt

Get a Load O' This Guy!
Elite Explorer
Joined
December 22, 2021
Messages
4,935
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3,537
City, State
Los Angeles, CA
Year, Model & Trim Level
1998 XLT 4x4
ECT? hows trans pressure? limo mode has a bunch of different causes, but most all can be traced to some rogue sensor
 






410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
28,700
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5,045
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
If the check engine light is flashing there are indeed codes
Manufacture specific codes
You may need a better scanner

It could be something simple like wiring was not plugged in it or could require a trip
Back to the rebuilder
 






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