cruise control save gas? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 23 (permalink) Old 06-01-2008, 12:18 PM Thread Starter
Intrepid Fan
 
Join Date: Oct 2006
Location: Dallas
Posts: 240
Feedback: 0 / 0%
                     
cruise control save gas?

in long highway, using cruise control save gas? since gas price is so high
BlueTrep is offline  
Sponsored Links
Advertisement
 
post #2 of 23 (permalink) Old 06-01-2008, 12:24 PM
Intrepid Pro
 
tooch926's Avatar
 
Join Date: Feb 2008
Location: Concord, Ohio
Posts: 1,069
Feedback: 0 / 0%
                     
Quote:
Originally Posted by BlueTrep View Post
in long highway, using cruise control save gas? since gas price is so high
You're damn right it will. It does make a difference. I've tried all the ways there are. haha. No on gets cheaper than I do.
tooch926 is offline  
post #3 of 23 (permalink) Old 06-01-2008, 12:29 PM
Intrepid Pro
 
Join Date: Apr 2008
Location: New Port Richey, Florida
Posts: 1,225
Feedback: 0 / 0%
                     
i dont see how this will work where the engine still needs gas to run. your using the same amount of gas keeping your foot steady so you stay one speed. is this not true or am i missing something here?
mysteryemotionz is offline  
Sponsored Links
Advertisement
 
post #4 of 23 (permalink) Old 06-01-2008, 12:39 PM
Intrepid Modder
 
Starnerf's Avatar
 
Join Date: Feb 2005
Location: Rochester, NY
Posts: 636
Feedback: 2 / 100%
                     
Cruise control can keep your speed much steadier for much longer than you can on your own. And it's one less thing you need to think about while you're driving. Though I have noticed that if there are a lot of hills it may not work as well because it doesn't use gravity to build up a reserve of speed on the declines.
Starnerf is offline  
post #5 of 23 (permalink) Old 06-01-2008, 12:53 PM
Intrepid Pro
 
Join Date: Apr 2008
Location: New Port Richey, Florida
Posts: 1,225
Feedback: 0 / 0%
                     
personly i like to be in controll of my so i dont use the controll but when i do if im goin up hill the engine will rev high to gain the speed back. and on a down hill it wont let off so keeping the speed steady yes would help but there are other conditions that make it worth
mysteryemotionz is offline  
post #6 of 23 (permalink) Old 06-01-2008, 12:54 PM
Intrepid Pro
 
linuxglobal's Avatar
 
Join Date: Sep 2005
Location: Mississauga-Toronto, Ontario
Posts: 2,840
Feedback: 5 / 100%
                     
Quote:
Originally Posted by mysteryemotionz View Post
i dont see how this will work where the engine still needs gas to run. your using the same amount of gas keeping your foot steady so you stay one speed. is this not true or am i missing something here?
you cant keep your foot as steady as cruise control does. Downhill its a different story, i use cruise control on steady ground and then turn it off up and down hills. It will down shift to keep the speed down instead of braking so it will use engine braking in a sense and eat more gas than brakes.

Personally i dont like it because it has the tendency to put you to sleep. Wasting another 10$ of gas on a trip is nothing vs totaling the car if you fall asleep.

I use cruise control when cops are around or in a cop infested zone just so i dont forget and go to pass someone and get myself a stupid ticket.

linuxglobal is offline  
post #7 of 23 (permalink) Old 06-01-2008, 01:07 PM
Intrepid Pro
 
tooch926's Avatar
 
Join Date: Feb 2008
Location: Concord, Ohio
Posts: 1,069
Feedback: 0 / 0%
                     
Quote:
Originally Posted by linuxglobal View Post
you cant keep your foot as steady as cruise control does. Downhill its a different story, i use cruise control on steady ground and then turn it off up and down hills. It will down shift to keep the speed down instead of braking so it will use engine braking in a sense and eat more gas than brakes.

Personally i dont like it because it has the tendency to put you to sleep. Wasting another 10$ of gas on a trip is nothing vs totaling the car if you fall asleep.

I use cruise control when cops are around or in a cop infested zone just so i dont forget and go to pass someone and get myself a stupid ticket.
I agree with you completely. I still use it, but what I hate is when you're set at a speed, and someone is going REALLY slow and you have to brake. That on the other hand defeats the purpose of CC. That is, if you have to hit your brakes every 5 minutes for some 1,000 year old retired guy that has no where to be besides the local McDonalds for his free coffee and to b/s with all of his buddies about their putts.
tooch926 is offline  
post #8 of 23 (permalink) Old 06-01-2008, 01:11 PM
Intrepid Pro
 
Join Date: Apr 2008
Location: New Port Richey, Florida
Posts: 1,225
Feedback: 0 / 0%
                     
Quote:
Originally Posted by tooch926 View Post
I agree with you completely. I still use it, but what I hate is when you're set at a speed, and someone is going REALLY slow and you have to brake. That on the other hand defeats the purpose of CC. That is, if you have to hit your brakes every 5 minutes for some 1,000 year old retired guy that has no where to be besides the local McDonalds for his free coffee and to b/s with all of his buddies about their putts.
lol
mysteryemotionz is offline  
post #9 of 23 (permalink) Old 06-01-2008, 01:59 PM
Intrepid Modder
 
James88's Avatar
 
Join Date: Aug 2007
Location: Cypress, TX
Posts: 569
Feedback: 0 / 0%
                     
What you are missing is the fact that the average human can't keep their foot very still for very long. For instance, get in a fight with your wife and discover you are now going 85mph. A sad song comes on the radio and now you're going 60mph. Or the cell phone rings. Or you want to switch cd's, or any of a hundred other things. The computer, on the other hand, is happy to just count away 1's and 0's to infinity, so it can keep the speed much more steady than most humans.

Jim Snover

Quote:
Originally Posted by mysteryemotionz View Post
i dont see how this will work where the engine still needs gas to run. your using the same amount of gas keeping your foot steady so you stay one speed. is this not true or am i missing something here?
James88 is offline  
post #10 of 23 (permalink) Old 06-01-2008, 02:52 PM
Intrepid Modder
 
neuroticdave's Avatar
 
Join Date: Nov 2007
Location: Jersey City, NJ
Posts: 739
Feedback: 0 / 0%
                     
I use cruise control on long trips on mainly level roads. I get about 29MPG steadily most of the trip.
neuroticdave is offline  
post #11 of 23 (permalink) Old 06-01-2008, 03:12 PM
XGX
 
Join Date: Apr 2008
Posts: 277
Feedback: 0 / 0%
                     
Quote:
Originally Posted by tooch926 View Post
That on the other hand defeats the purpose of CC. That is, if you have to hit your brakes every 5 minutes for some 1,000 year old retired guy that has no where to be besides the local McDonalds for his free coffee and to b/s with all of his buddies about their putts.
That sums it up 100%.
XGX is offline  
post #12 of 23 (permalink) Old 06-01-2008, 05:17 PM Thread Starter
Intrepid Fan
 
Join Date: Oct 2006
Location: Dallas
Posts: 240
Feedback: 0 / 0%
                     
when downhill, it may downshift, engine RPM goes high, but PCM will cut off gas when engine RPM is higher than about 1500. so, it will not eat more gas than brake. i maybe wrong, but that is what i think

Quote:
Originally Posted by linuxglobal View Post
you cant keep your foot as steady as cruise control does. Downhill its a different story, i use cruise control on steady ground and then turn it off up and down hills. It will down shift to keep the speed down instead of braking so it will use engine braking in a sense and eat more gas than brakes.
Personally i dont like it because it has the tendency to put you to sleep. Wasting another 10$ of gas on a trip is nothing vs totaling the car if you fall asleep.

I use cruise control when cops are around or in a cop infested zone just so i dont forget and go to pass someone and get myself a stupid ticket.
BlueTrep is offline  
post #13 of 23 (permalink) Old 06-01-2008, 06:08 PM
Intrepid Pro
 
yiranhu's Avatar
 
Join Date: Jul 2007
Location: Powell Ohio
Posts: 1,778
Feedback: 9 / 100%
                     
that's called decel fuel cutoff. All companies makes that part of the control strategy to save gas. You can see the effect of this if you have an OTIS or EVIC that has the instant MPG function. When you are cruising and you let off the throttle completely the MPG goes way up (i.e. not just up a little bit). I'm not sure how aggressively chrysler does this because in some instances this does not happen...

Honestly though, I wish they would implement a different type of cruise control that's constant throttle. So instead of adjusting the throttle to match the speed, it will just hold the throttle and let the car speed change with the terrane. This will give the best MPG. Although it is annoying to other drivers if the hills on the road are significant (i.e. drops your speed by >10 and makes people angry at you )

Yiran Hu
graduate research associate
Center for Automotive Research
at THE Ohio State University

2004 Intrepid SXT
Your Current Signature Picture
yiranhu is offline  
post #14 of 23 (permalink) Old 06-01-2008, 07:00 PM
Intrepid Pro
 
linuxglobal's Avatar
 
Join Date: Sep 2005
Location: Mississauga-Toronto, Ontario
Posts: 2,840
Feedback: 5 / 100%
                     
Quote:
Originally Posted by BlueTrep View Post
when downhill, it may downshift, engine RPM goes high, but PCM will cut off gas when engine RPM is higher than about 1500. so, it will not eat more gas than brake. i maybe wrong, but that is what i think
i think of it as it is in the case of a standard car, down shifting would consume more gas than just pressing in the clutch and slowly braking or down shifting to accommodate the climb that will soon arrive yet still avoiding the throttle.

I didnt know about the PCM so i could have it all wrong, just from the looks of it, the tranny downshifts and it doesnt feel too healthy for the tranny especially if the car is loaded with junk.

CM
linuxglobal is offline  
post #15 of 23 (permalink) Old 06-01-2008, 07:49 PM
Intrepid Fan
 
Join Date: Mar 2008
Location: NY,NY
Posts: 235
Feedback: 0 / 0%
     
I drive from Syracuse to Buffalo many times a year, and that's about a 150-ish mile trip. I've found that CC makes a large difference in my fuel economy. When I do it myself, I get ~26 MPG, and when I use CC I get ~30.

Also, not even sure if the car knows what it's talking about, but it seems to think I get better gas mileage when I open my sunroof to 'Vent'. I'm guessing it would have something to do with the increased downforce. True, it might be negligible but at 73MPH maybe it amounts to something. I would think it increases drag because of the contained vortex, at least that's what I think it's called-- my roommate is an engineer and was talking about this stuff for a week this past semester.

Regardless, no matter where I'm driving, has to be highway driving though, I get 1-2 MPG better from opening it.

Last edited by Aquinox; 06-01-2008 at 10:38 PM. Reason: I'm an idiot.
Aquinox is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome