[Billy94Z]

I can't find the thread but I wanted to thank whoever figured this out and I was curios how you found out.

I am talking about turning the key on but not starting it and after all of the sensor lights turn off you push the accelerator on and off as quickly as possible. Mine must have been way off because there was a huge difference. Try it you'll like it

 

[Gary C]

What motored model are you talking about.... All they all the same?

thanks for the tip

 

[Billy94Z]

This is for the 300C and I did try to do a search to find it but was unsuccessful.

 

[jcsganga34]

I don't ever remember this post, if someone knows the original thread could they post a link? I tried searching for it and could not find it. Thanks

 

[indyCoder]

http://www.300cforums.com/showthread.php?t=377&highlight=Easter

 

[jeepgrady]

What is this supposed to do?

 

[AndyK]

Improves pedal response, basicially. Feels 'crisper'. No solid numbers, but I did notice a difference when I did it; doing it a diff speeds 'feel' different.

 

[steves300c]

Improves pedal response, basicially. Feels 'crisper'. No solid numbers, but I did notice a difference when I did it; doing it a diff speeds 'feel' different.

Okay, so what did you do? I cannot find this info in the link provided by indycooder?
Do you run through the actuator test, then press/depress the accelerator when the test is complete?

 

[Billy94Z]

I remember now that I got this off of the other website. You guys got me paranoid to even post because all some people post is "you should of done a search." etc....

 

[jcsganga34]

Now that we've established this has come from another site, would someone who has done this please post the procedure and what the results are supposed to be?

 

[Billy94Z]

The first post says it all... You turn the key on but dont start car. You wait untill all lights on dash turn off 10-15 seconds. Then press and release accelerator as fast as possible. This removes the 1/2 second lag time some people feel when you floor the accelerator and gives instant acceleration. It made a big difference in my car. I got it off of dodgemagnum.net

 

[KC300C]

I would be interested in this information as well.

 

[HEMEEE]

I would be interested in this information as well.

Read Billy94Z's post #11 above... it's all there!

 

[II kings 9:20]

I tried it, the car is so responsive anyway it's hard to tell, Audi did this several years ago to improve off the line "feel" though 0-60 was unchanged the cars felt quicker unlike (until recent) some German cars with very long throttle tip in and 2nd gear starts unless floored.

 

[jcsganga34]

I performed the procedure above and I *think* I feel a difference. Of course it could be my mind or this car messing with me again. Oh well, I guess I'll never know

 

[myrtle300c]

I did it last night and thought maybe I felt something, but could have been psychological.....Does the system reset to a default setting everytime you turn the car off, Or is this trick a one time thing???

 

[AndyK]

myrtle300c: It does not reset.

 

[bos447]

Yes, the original thread was posted on another website. The purpose as stated in the discussion is to calibrate throttle response. Some of the folks have said that the throttle response feels quicker after doing the procedure. Primarily there seems to be no delay in response when the accelerator is pressed. Here is the procedure. Once in the car turn on the key without starting the motor. Allow all the start-up lights and sounds to go off. Then press the accelerator all the way to the floor and then release. Turn the key off and then start the car. That's all there is. It appears that the primary confusion comes in when discussing how fast or slow to depress and release the accelerator. Some have done it very quickly and others have said they pressed slowly and released slowly. I have tried it and think there is some difference although I do not know how to verify that.

 

[HEMEEE]

Okay I did it...

The lag time was slightly annoying for me. After driving Corvettes for many years, I really appreciate the immediacy of response. So I tried the procedure today, using the fast depress/release recommended (since I want it to be faster ) No doubt about it, it definitely made a difference...

Whoever discovered this little gem of a procedure, bless you!

 

[joey]

This may be one of the original threads where the calibration was discussed.
The calibration procedure was in the 2003 Ram manual.
http://www.dodgeboy.net/forum/viewtopic.php?t=2215&postdays=0&postorder=asc&start=15

No one seems to know for sure if it works on the 300c/Magnum hemi.
I tried the procedure but didn't notice any change.

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"The Accelerator Pedal Position Sensor (APPS) assembly is located under the vehicle battery tray. A cable connects the assembly to the accelerator pedal. A plastic cover with a movable door is used to cover the assembly. The APPS is used only with the 5.7L V-8 engine."

After changing the ECM it states:

"Turn key to ON position. Without starting engine, slowly press throttle pedal to floor and then slowly release. This step must be done (one time) to ensure accelerator pedal position sensor calibration has been learned by ECM."

If changing the accelerator pedal position sensor it states:

"Leave ignition switch ON for a minimum of 10 seconds. This will allow PCM to learn electrical parameters."