Are the temp sensors in the exhaust where the dpf was?

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No, the plugs are zip tied up to the harness not plugged in. It just has a straight delete pipe in place.

 

No, sensors are gone, harness side plugs are zip tied up to the harness. It has a delete pipe installed there. I did see on my scan tool that the bank one sensors 1 and 2 were reading 1400ish degrees and didn't change with throttle so Im assuming they are showing the max value. Im wondering if the truck is in regen mode?

 

You need the sensors plugged in. The computer thinks the sensors are bad and it defaults to a high idle. If you had the old sensors you could use them. Try making a jumper wire for each sensor plug, jump the two pins together on each plug and then start it.

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Agree withe Lipka101 on this. Most if not all the programmers now allow you to remove the sensors from the exhaust, but they still have to be plugged into the harness. The truck is thinking the sensors are bad and that is why you are getting that high reading.

 

I counted 3 plugs back there, is one a pressure sensor? Also noticed when I was watching parameters that it showed "dechoke mode - NO" Is this a double negative meaning it is in choke mode? just something I was thinking could be part of the problem. With the open circuit it is reading 1400 deg so maybe returning 12v to the computer will make it think it is at the lowest temp it can read. I will try jumping the plugs. Are all three temp sensors? I worked on an 09 that a local perf shop deleted and noticed they did not have sensors installed. Is this something that could hurt the engine or just making it idle a little high? Thanks for the info guys!

 

It's not going to hurt the engine. The purpose of jumping the plugs is to fool it into thinking it has sensors plugged in. Some tuners do not require the sensors to be hooked up. Most do not need them installed in the exhaust but do need them plugged in.

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im having the same problem with my truck. all my exhaust sensors are in tact and plugged in and im fully deleted for about 35k miles now and no problems before.

PS- ive got an exhaust leak either between turbos or in one of the up-pipes. im going to be pulling the cab here in the next couple weeks and replace the pipes and install headstuds and see if I can find if I have another leak. would a low pressure reading from my leak cause a higher idle?

 

hopefully you guys can help me out I just recently installed a 5 in straight pipe down pipe back and I am using a DPFR ford 4.0 tuner and in the hand book it even says the EGTs do not need to go back into the exhaust so I did what everyone else does and plugs them in and zip ties them out of the way and now I am experiencing high idle should i just get 3 new sensors and drill and tap them in and i am not sure if i need to put any washers in so it can read the correct temp without the sensor being too low or too high also should i keep them spaced out as much as possible one more thing i have theory on whats happening the computer is reading the temp to be cold so it puts it into high idle but lets say i had them in the exhaust it would read a warm temp and it will idle lower

 

I'm running the same set up as you, with out the high idle. I have the temp sensors just hanging under the truck. To me your problem sounds like you have a sensor being grounded out. If I'm thinking correctly, if the tip is pressed against the frame you could have it ground fault thus making the computer think you are running high. I wrapped my sensors in foam and then put a baggie over them before I zipped tied them to the frame. I have been this way for about 3 years now with out an issue.