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Old 06-15-2021, 10:44 PM
Mike S's Avatar
Mike S Mike S is offline
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Default Need Ford technician, help

My 2012 F150 had the strangest problem towing the race car home tonight. Need help I am at a loss.
Speedometer quit working, air bag light came on, engine would not go above 2000 rpms and blinkers would not self cancel. What the hell. Ever try and pull a trailer with out the engine going above 2000.

Got home finally, shut off the truck and restarted it and everything is good. I didn't want to do it in the middle of no where when I was pulling the trailer. What in hell would make a truck at up like this?

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Old 06-15-2021, 10:59 PM
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It sounds to me that it went into "limp mode". Have it scanned with a good diagnostic scanner, not auto parts store free scan.

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Old 06-16-2021, 12:12 AM
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68 Caretaker 68 Caretaker is offline
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Quote:
Originally Posted by Mike S View Post
My 2012 F150 had the strangest problem towing the race car home tonight. Need help I am at a loss.
Speedometer quit working, air bag light came on, engine would not go above 2000 rpms and blinkers would not self cancel. What the hell. Ever try and pull a trailer with out the engine going above 2000.

Got home finally, shut off the truck and restarted it and everything is good. I didn't want to do it in the middle of no where when I was pulling the trailer. What in hell would make a truck at up like this?
The company that I worked for as a mechanic for 32 years had a fleet that included several f150 Fords from 2008- 2015. If you have codes for low voltage to any of the body control modules or the pcm, I would check the battery connections for corrosion and tightness. The 6 speed automatic trans had issues with the electrical pass through connector in the 2011 - 14 trucks also. Hope this helps.

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Old 06-16-2021, 07:38 AM
TAKerry TAKerry is offline
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Quote:
Originally Posted by 68 Caretaker View Post
The company that I worked for as a mechanic for 32 years had a fleet that included several f150 Fords from 2008- 2015. If you have codes for low voltage to any of the body control modules or the pcm, I would check the battery connections for corrosion and tightness. The 6 speed automatic trans had issues with the electrical pass through connector in the 2011 - 14 trucks also. Hope this helps.
I would check the battery as well. I have an 06, many years ago I had something similar happen, only not quite as bad. Gauges all started to act up and were going wonky. I feared the worse, come to find out I had a bad battery. Put a new one in and never looked back. Good Luck, hope IT is something simple.

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Old 06-16-2021, 09:53 AM
JohnnyAction JohnnyAction is offline
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Hello Mike, Another problem found in the Ford pickup trucks is water contamination in the "Body Control Module" or "GEM Module" as Ford calls it. The module is located behind the right side kick panel and gets water contaminated due to either a windshield leak or plugged cowl drain. I have also found water contamination of the interior fuse panel caused by the same problems. This is a very common problem that creates the same problems as you are having, and many more body electrical issues.

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Old 06-16-2021, 01:21 PM
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Talked with a Ford tech today. My truck has a recall for sudden down shifts into first. He told me they have to load a new program which is covered under warranty. He said if it did down shift to first it could have thrown it into limp mode. Makes sense to me since, I was decelerating when it happened. I thought it was a bump in the road but probably was that it dropped into first.
Also going to change out the 5 year old battery. Been on a charger for 2 hrs and won't fully charge.

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Old 06-16-2021, 01:51 PM
1965gp 1965gp is offline
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Another vote for the battery. Anytime you have a lot of crazy issues at once I would start there.

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Old 06-16-2021, 02:21 PM
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Another vote for "limp mode." Get on a Ford Truck forum and post your symptoms.

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Old 06-16-2021, 05:56 PM
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As much as I swear on the old Fords, electrical has always been their weak part.

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