Power cuts out and check engine light pops up when I accelerate
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Freshman User
Joined: Aug 2017
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Power cuts out and check engine light pops up when I accelerate
So since yesterday every when I go to accelerate about every other time It wont accelerate and my check engine light comes on till I tap the brake then the check engine light goes off and I get my power back any ideas
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
I'm thinking the IVS (idle validation switch) on the go peddle is flaky. If you push on the peddle and it does not switch positions the computer will ignore your foot pressing on the peddle. It's a two wire sensor on the peddle assembly, probably has lots of crud built up on it. Spray it with some contact cleaner as the part is no longer available and you would need to purchase the entire peddle assembly, kinda costly.
Really need a little more information on when this happens, driving normally or when taking off from a stop light?
Really need a little more information on when this happens, driving normally or when taking off from a stop light?
Fleet Mechanic
Joined: Dec 2006
Posts: 1,925
Likes: 10
From: Phoenix, AZ
Sounds similar to what was happening with me. There's a good chance one (or both) sensors in your accelerator pedal are going bad or the connections are getting corroded/dirty.
Take a look down at the accelerator pedal, you'll see one plug near the top go into a switch that is attached to a rod with a spring over it. This is your accelerator position sensor (sometimes referred to as TPS). Try unplugging this and spraying electrical contact cleaner in the plug and the switch. Also, just under that switch you'll find another plug that has a small button that registered if the pedal is being pressed or not. Again, clean that out with electrical contact cleaner and try and check over the wiring two these switches as best as you can.
Some people have had luck with simply cleaning those connections out, not me though.
I've also read on automatic transmissions, the wiring to one of these sensors likes to get chaffed up in the steering column next to the transmission selection lever (or somewhere in that location) and can intermittently ground out. It would be worth checking up there to see if those wires are starting to do that if cleaning the switches doesn't work out.
Take a look down at the accelerator pedal, you'll see one plug near the top go into a switch that is attached to a rod with a spring over it. This is your accelerator position sensor (sometimes referred to as TPS). Try unplugging this and spraying electrical contact cleaner in the plug and the switch. Also, just under that switch you'll find another plug that has a small button that registered if the pedal is being pressed or not. Again, clean that out with electrical contact cleaner and try and check over the wiring two these switches as best as you can.
Some people have had luck with simply cleaning those connections out, not me though.
I've also read on automatic transmissions, the wiring to one of these sensors likes to get chaffed up in the steering column next to the transmission selection lever (or somewhere in that location) and can intermittently ground out. It would be worth checking up there to see if those wires are starting to do that if cleaning the switches doesn't work out.
Tuned
Joined: Apr 2018
Posts: 329
Likes: 17
I added PIDs for the TPS and IVS after my deep water issue. I think you can monitor those. It didn't prove out a problem for me but it might work for you. My problem hasn't been back after the one incident.
I am coming up on my second oil change so I have put several thousand miles on my truck lately. I'm paying $2.74 for diesel, it's working for me.
I am coming up on my second oil change so I have put several thousand miles on my truck lately. I'm paying $2.74 for diesel, it's working for me.
Fleet Mechanic
Joined: Dec 2006
Posts: 1,925
Likes: 10
From: Phoenix, AZ
I added PIDs for the TPS and IVS after my deep water issue. I think you can monitor those. It didn't prove out a problem for me but it might work for you. My problem hasn't been back after the one incident.
I am coming up on my second oil change so I have put several thousand miles on my truck lately. I'm paying $2.74 for diesel, it's working for me.
I am coming up on my second oil change so I have put several thousand miles on my truck lately. I'm paying $2.74 for diesel, it's working for me.
Tuned
Joined: Apr 2018
Posts: 329
Likes: 17
PIDs are live data from memory locations on the truck's computer. Using a OBDII adapter and a program like Torque, Forscan or CarGaugePro we can see the data coming in from the sensors and going out to the actuators.
Some of the other forums here use this a lot more than it seems this forum does.
https://www.ford-trucks.com/forums/1...nd-others.html
Some of the other forums here use this a lot more than it seems this forum does.
https://www.ford-trucks.com/forums/1...nd-others.html
Fleet Mechanic
Joined: Aug 2014
Posts: 1,821
Likes: 238
From: piedmont mo
Just a possibility but the tin ipr nut can fall off and every time u excelerate the ipr selonoid slides back and hitting the brake makes it go back forward may be wrong but there’s a chance happened to me twice on two different trucks
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Tuned
Joined: Apr 2018
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,925
Likes: 10
From: Phoenix, AZ
Yeah I may give them a quick call and see if I can get those values working (because they aren't on the stock list on my gauge when I went to add them to the values I monitor, but the website mentions TPS at least.) I'm thinking my IVS is intermittently failing so the pedal assembly you sent over may help. I hate intermittent problems, especially the electrical ones!
Edale4, have you made any progress on your issue?
Edale4, have you made any progress on your issue?
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hogdogs
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Oct 8, 2007 05:38 AM