New problem with my 2020 ranger.

[Navycwo2]

I have a 2020 Ranger. Love the truck but have had numerous issues. I bought it new in July 2020. At around 32000 miles, i started having transmission issues like so many have had. Delay shifts, hard shifts, hard down shifts etc. Took it to the dealer, they did the usual, the relearn as they called it. It seemed to be okay for a couple hundred miles, then the same issues started happening. Transmission was replaced at 35,000. the new transmission still has some peculiarities but nothing like it had.

The new issue is that at random time, when stepping on the throttle from a stop, nothing happens. Sometimes it takes up to 10 seconds for any response. It is absolutely dangerous when it happens when trying to pull out in to traffic. Any ideas from anyone would be helpful. I have 64,000 miles on it now, so any warranty has ended.

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[airline tech]

Ironically, a member posted a very similar issue recently.
Is the engine RPM's climbing when this happens?
or
Just engine revving and zero response from the transmission / drivetrain?

As far as the warranty - The Replacement transmission, should/ may have an additional warranty added to it - outside of the 60K warranty.

(1) Anyone had their transmission simply not respond, when flooring it? | 2019+ Ford Ranger and Raptor Forum (5th Generation) - Ranger5G.com

 

[Navycwo2]

In the past when I had the delayed shifting issue, the RPM would climb. This new issue, there is no response from the engine. No increase in RPM. According to the dealer, the new transmission is only warranted up to the end of the 60 month/60,000 mile power train warranty.

 

[airline tech]

If no RPM climb, at all

Then it's the Accelerator Pedal or Throttle Body.
Scan for codes and see what it shows.
I think you will find a code related to the Accelerator Pedal Position Sensor 1 or 2.

I was doing some research on this issue for the previous post and if one of the Accelerator Pedal inputs is lost - It will cause a delayed throttle response.
There are 2 position sensors on this circuit (one of them is dropping off)
This is the delay, as the PCM is lost and trying to determine correct Accelerator Pedal / Throttle Plate (Throttle Body) position and creates the delayed response.
When it does this - try tapping the Brake Pedal, this performs a (reset) of the Accelerator Pedal input and may provide a faster response.

 

[TJC]

Simply too many sensors... or worse, poor quality sensors.

 

[Motorpsychology]

Simply too many sensors... or worse, poor quality sensors.

Heavy truck diesels (Cummins INX 13's anyway) have sensors for some of the sensors! I'd bring my truck into our shop after a run and wrote up what codes it was throwing and the techs would try to diagnose it. Once there was a sensor that moderated other sensors malfunctioning. It seemed like there really wasn't an iron block, just a million sensors glued together and the pistons ran up and down in-between them.

 

[dtech]

If no RPM climb, at all

Then it's the Accelerator Pedal or Throttle Body.
Scan for codes and see what it shows.
I think you will find a code related to the Accelerator Pedal Position Sensor 1 or 2.

I was doing some research on this issue for the previous post and if one of the Accelerator Pedal inputs is lost - It will cause a delayed throttle response.
There are 2 position sensors on this circuit (one of them is dropping off)
This is the delay, as the PCM is lost and trying to determine correct Accelerator Pedal / Throttle Plate (Throttle Body) position and creates the delayed response.
When it does this - try tapping the Brake Pedal, this performs a (reset) of the Accelerator Pedal input and may provide a faster response.

Shouldn't that trigger a cel or go into limp mode? Usually the pcm monitors the output of both sensors, comparing them and if a delta exceeds a certain range you get a cel.

 

[Dereku]

Shouldn't that trigger a cel or go into limp mode? Usually the pcm monitors the output of both sensors, comparing them and if a delta exceeds a certain range you get a cel.

Fords can be particular when it comes to throwing codes. I replaced a COP before that I manually diagnosed. It threw a code on my test drive after the replacement lol. A very specific thing has to happen before it trips a code. Could be a soft code too.

 

[harringtondav]

Fly by wire is great....when it works. Better performance and fuel economy, lower emissions, etc.
But there are times when I miss the foot feed directly cabled to the throttle body with its position sensor telling the ECM what you want.

 

[Retirednavy2010]

In the past when I had the delayed shifting issue, the RPM would climb. This new issue, there is no response from the engine. No increase in RPM. According to the dealer, the new transmission is only warranted up to the end of the 60 month/60,000 mile power train warranty.

My trans was rebuilt and I have a 2 year unlimited mile warranty.

 

[airline tech]

While researching the other thread (issue) I wanted to see what kind of fail safe the throttle system had (if any) as this is (Electric Control)
and found this:

Block, 2 or 3 would describe the OP's issue. I am thinking #2

Note: The Accel Pedal has 2 circuits (redundancy)
Note: BPP = Brake Pedal Position

I am thinking both posts are related to this: Failure Mode

 

[Navycwo2]

If no RPM climb, at all

Then it's the Accelerator Pedal or Throttle Body.
Scan for codes and see what it shows.
I think you will find a code related to the Accelerator Pedal Position Sensor 1 or 2.

I was doing some research on this issue for the previous post and if one of the Accelerator Pedal inputs is lost - It will cause a delayed throttle response.
There are 2 position sensors on this circuit (one of them is dropping off)
This is the delay, as the PCM is lost and trying to determine correct Accelerator Pedal / Throttle Plate (Throttle Body) position and creates the delayed response.
When it does this - try tapping the Brake Pedal, this performs a (reset) of the Accelerator Pedal input and may provide a faster response.

Thanks for the info. I was thinking it could be possibly a position sensor. What kind of scanner do I need to check for codes?

 

[airline tech]

A scan from Auto-Zone etc. may show something. It's worth a shot if you do not own one. But it may take a high-level scanner to pull it. They generally use the cheaper Innova code readers.
If you have Forscan - it should pull it as well.
Hopefully it set a code - if not then it will take a Live Data (PID) monitor and watch the PIDS throttle travel to see which one glitches in the voltage reading.

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