Limp mode every 400+ miles
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5th Gear
Joined: Feb 2025
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Limp mode every 400+ miles
So I picked up a decent 2005 F250 4x4 with the 5.4 L 3 valve. The guy that had it before said it would go into limp mode with slight dead pedal until about 1/4 pressed. He replaced the throttle body and recently I had a wrench and check engine come up and the idle speed was a little high causing the transmission to downshift hard coming to a stop and threw a flashing tow/haul light of a stuck shift solenoid but I think was due to high idle upon stop. The only two codes that would periodically come up was p2106 and p2135. I also recently replaced the complete gas pedal. I haven't performed a throttle body reset or anything. But already after shutting off truck and restart, it runs and drives perfect again. Just kinda stumped and wonder if this might be a PCM issue, mass air flow sensor..... ??? Anyone else ever had this happen?
Last edited by Mustangboi2006; Feb 9, 2025 at 07:13 PM. Reason: Title change
Thread Starter
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5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
So far been running good for over a week
So I picked up a decent 2005 F250 4x4 with the 5.4 L 3 valve. The guy that had it before said it would go into limp mode with slight dead pedal until about 1/4 pressed. He replaced the throttle body and recently I had a wrench and check engine come up and the idle speed was a little high causing the transmission to downshift hard coming to a stop and threw a flashing tow/haul light of a stuck shift solenoid but I think was due to high idle upon stop. The only two codes that would periodically come up was p2106 and p2135. I also recently replaced the complete gas pedal. I haven't performed a throttle body reset or anything. But already after shutting off truck and restart, it runs and drives perfect again. Just kinda stumped and wonder if this might be a PCM issue, mass air flow sensor..... ??? Anyone else ever had this happen?
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