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high idel while in gear

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Old Dec 3, 2015 | 04:47 PM
  #1  
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high idel while in gear

So finally got my truck running due to a fuel issue. Anyways been driving it for a week or two now, and I have a strange problem idk if it has been covered here or not.

Driving around tow ect if you come to a light or whatever and stop the rpms stay at 800rpm.

Now if you shift it out of gear and back into drive the rpms settle back down around 650. Where is should be.

My guess is the torque converter is not disengaged all the way when it stuck at high rpm (800-900) for this situation.

No cel, slippage, or crazy noises

2002 7.3 power stroke all stock right now @160k black crewcab

Previous owner had a tunner on it but not anymore. Could it have smoke the trans???
 
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Old Dec 3, 2015 | 07:27 PM
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Could possibly be your Idle Validation Switch on the go pedal. You could try cleaning it with compressed air. I think if the torque converter was still engaged it would stall the engine.
 
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Old Dec 3, 2015 | 08:20 PM
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On that idel validation switch would it affect it in park drive ect?
 
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Old Dec 3, 2015 | 08:35 PM
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On that idel validation switch would it affect it in park drive ect?
 
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Old Dec 4, 2015 | 02:53 PM
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TPS

I also have this exact problem now, pull up a light and rpm drops to 800
and sometimes 1000 and then down 650. I believe your problem is with
the TPS. My Ex has the adjustable pedals and tps is a $800.00 list price fix.
For the f250 I think it under $50.00.
 
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Old Dec 4, 2015 | 03:06 PM
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Originally Posted by Olafs 7.3 ex
I also have this exact problem now, pull up a light and rpm drops to 800
and sometimes 1000 and then down 650. I believe your problem is with
the TPS. My Ex has the adjustable pedals and tps is a $800.00 list price fix.
For the f250 I think it under $50.00.

Yes mine its Lariat so adjustable pedals.

I don't understand the difference between in gear or out of gear wether its the TPS or the idel validation switch??? Please elaborate

Oh previous owner did replace tps within a year before I bought it two months ago
 
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Old Dec 4, 2015 | 03:22 PM
  #7  
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Originally Posted by goose_ss4
My guess is the torque converter is not disengaged all the way when it stuck at high rpm (800-900) for this situation.
That makes no sense at all. The torque converter should NOT be disengaged. If the engine is running the torque converter is engaged and NEVER becomes disengaged. If you meant unlocked instead of disengaged, then the engine idle would be too low, not too high.

Look elsewhere for your problem.
 
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Old Dec 4, 2015 | 03:23 PM
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I highly doubt it has anything to do with the accelerator pedal or IVS.
 
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Old Dec 4, 2015 | 04:56 PM
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Second time around for me, First time same symptoms as this time, with the added benefit of no throttle response at all. Was in central Mexico (as in the Country of Mexico) the first time. Called my Ford Dealer and they told me to stomp on the throttle, It worked, problem Fixed-for awhile anyway. Stomped on that pedal all the back to NE Iowa. Dealer replaced TPS, throttle position sensor assembly under warranty. I’m not sure but I do believe the idel validation switch is part of that same assembly.
 
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Old Dec 4, 2015 | 05:03 PM
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There is no check engine light, so there would be any codes?


And checked fluid is all good
 
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Old Dec 4, 2015 | 05:05 PM
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Originally Posted by Olafs 7.3 ex
Second time around for me, First time same symptoms as this time, with the added benefit of no throttle response at all. Was in central Mexico (as in the Country of Mexico) the first time. Called my Ford Dealer and they told me to stomp on the throttle, It worked, problem Fixed-for awhile anyway. Stomped on that pedal all the back to NE Iowa. Dealer replaced TPS, throttle position sensor assembly under warranty. I’m not sure but I do believe the idel validation switch is part of that same assembly.

Your definitely right on mine there is only one pigtail going to the tps. One group of wires. To clear I do have the adjustable pedals
 
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Old Dec 4, 2015 | 06:12 PM
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Does this only happen when it's cold outside and the engine isn't yet up to operating temp? Do you hear a funny sound from the exhaust?
 
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Old Dec 5, 2015 | 12:34 PM
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Originally Posted by Shake-N-Bake
Does this only happen when it's cold outside and the engine isn't yet up to operating temp? Do you hear a funny sound from the exhaust?
I thought it was the ebv, but it does it when its hot or cold op temp.

No crazy noises anywhere, and runs good
 
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Old Dec 12, 2015 | 03:36 PM
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long time, update

So did a little more reading and I think i found it.

The tps sensor

I noticed it stays at that 800-900 rpm after driving around at or above 2,000 rpm with normal driving. Also I dont the think the transmission has anything to do with yelling the pcm where to idel.

Another thing is I dont hear the distinctive click when the throttle is off and you step on it....maybe needs adjusting, but can you adjust the tps with the moving adjustable pedals???

There is only one connection going to it.. help


I think it is just out of wack due it never going to normal idel, and it luggs alot. Instead of down shifting
 
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Old Jun 29, 2016 | 03:52 PM
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hey yall, dont know if anyone was still following this, and i may have posted some other threads, but no avail

been living with the strand intermit idle for awhile now. i have been doing little things to make this truck better.

fuel tank mods
regulated return
turbo rebuild
hpop reseal and fittings
melling lpop
new ebps sensor turbe fitting
evbp delete
lift kit
wheels and tires




still, driving normally in drive coming to a stop my truck idles at 800 rpm.

it only does this when its warmed up. first thing in the morning idle perfectly fine at 650.

i am going to try to swap the CPS this weekend and hopes that helps, but if anyone has any suggestions id be happy to hear them thanks
 
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