Just got my silver 300C...loving it! accelator hesitation problem?

[mrvortech]

I have noticed some accelator hesitation however anyone have more info and also wondering how you would know whether or not the MDS is working? TIA

[chasb]

Hesitation is normal with the 5.7L. Mine went away with the installation of my MOPAR CAI. Instant throttle response and no hesitation.



MDS can only be tested by taking mileage calculations. It's operation is not discernable when you are driving. Also make sure you use 89 octane gas, not higher, or the MDS will be impeded. (See your manual)

Originally Posted by mrvortech

I have noticed some accelator hesitation however anyone have more info and also wondering how you would know whether or not the MDS is working? TIA

[HEMMISSEY]

Also make sure you use 89 octane gas, not higher, or the MDS will be impeded. (See your manual)

huummm . Im running 91 all day, and my MDS is working fine..

[kevenj]

Originally Posted by mrvortech

I have noticed some accelator hesitation however anyone have more info and also wondering how you would know whether or not the MDS is working? TIA

hey you drive a 'hemi' now, why are you named after a GM engine? :-)

[300CGuy]

Or get some new exhuast to hear the mds hehe

[mrvortech]

Originally Posted by kevenj

hey you drive a 'hemi' now, why are you named after a GM engine? :-)

As you said, I drive a HEMI now baby! Also does anyone know how the 6 piece chrome pillars are installed, just something that's stuck on the outside or what?

[mrvortech]

Originally Posted by 300CGuy

Or get some new exhuast to hear the mds hehe

I reallly like the look of the chrome pillars, inexpensive but distinctive upgrade, just wondering I live in vancouver, bc and where can i get it from and how is it installed, thanx

[Hemi57]

Originally Posted by mrvortech

I have noticed some accelator hesitation however anyone have more info and also wondering how you would know whether or not the MDS is working? TIA

Hey I don't even have a "C" yet but I do recall a thread last year on the subject of calibrating the electronic accelerator for better response. You could do a search but from memory it is quite simply as follows:

1. Switch on ignition
2. Wait for all warning "bells" and dash lights flashing to stop
3. Depress the accelerator fully and smoothly
4. Release accelerator smoothly
5. Switch off ignition.
6. Then start as normal.

Other members reckon they notice a marked improvement.

[urbanchemist]

if you do a search on the site there are many posts that explain how to reset the calibration for the accelerator. it defintely works. enjoy the new ride

[joey]

The hemi has a built in hesitation which I don't think we will ever get rid of. It is very similar to turbo lag. I believe the hesitation is coming from the transmission, and probably related to the torque converter in certain situations. I have done the throttle calibration many times and have never noticed any difference. I notice the most hesitation when trying a fast acceleration after I have driving at a constant cruising speed, say 40 mph.
Push the gas hard, and I often notice the car seems to bog down for a second or so, and the RPMS even drop, before the car starts to accelerate.
At higher freeway speeds the hesitation is not as pronounced, but still there.
Knowing about the hesitation, I have learned to expect it and plan ahead.
Using the slap stick is another way to get a more reliable response.
This hesitation is a real downer in some driving situations.
I have several times chickened out trying to merge onto the freeway, or dive into a fast moving lane. The only way to avoid the long grueling hesitations is to floor the pedal to get the trani to get out of its funk.