By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our
Privacy Statement, and you agree that your use of the website is subject to our
Visitor Agreement.
Comments
Some explanations for higher mpg at higher elevation:
tidester, "SUV gas mileage - Feel free to participate" #908, 15 Oct 2005 8:35 pm
Steve, Host
I had thought of the "reduced aero drag" one before, and I just thought of another one that is related to your (a) above. At higher altitude, if you are running on gasoline you got at lower altitude, you may be running a higher octane than you need. Higher octane (for high altitudes) means the engine computer will advance the timing slightly, improving gas mileage a bit. Also, the use of ethanol or MTBE in gas does reduce gas mileage, so maybe the mountain gas doesn't have those things, as you pointed out by your (a) above. However, I'd think the volumetric efficiency loss would overcome the other effects, meaning you get less mpg at higher altitudes.
In summary:
(1) Higher octane increases mpg (ignition advances). A '87' octane looks like higher octane at higher altitudes to an engine.
(2) Air drag is about 3% less at Denver's 5,200 ft vs. the beach.
(3) High alitudes reduce volumetric efficiency, reducing gas mileage.
(4) Ethanol or MTBE reduces mpg vs. using 100% gas.
(5) Other factors are huge & often bury all the above.
One would think so but the discussion arose precisely because so many people had been reporting improved gasoline mileage at higher elevations. Therefore, I only mentioned a few factors that would tend to improve mileage.
tidester, host
I don't understand how driving the same type (Highway) with the same vehicle (2003 CR-V) at two different elevations constitutes "Apples to Oranges". I think that the only thing that was different was the elevation.
It is most likely caused by the engine CPU programming, as I said before, some "unintended consequence" of the CPU adjusting to the need for more air at higher elevations.
Only true if the engine is programmed to take advantage of this feature. Some vehicles are, some are not. The FS, for example, says to use only 87 octane. My 2003 CR-V had warnings not to use higher octane than 87.
" (4) Ethanol or MTBE reduces mpg vs. using 100% gas. "
The gas in NM is Ethanol, the gas in CA had MTBE (at the time, phased out now).
I bought mine on E-bay (about $20). Once you have the spare, take it to a key shop and they will cut it to match your current keys (about $3). Then go to your owners manual, page 102, titled "Programming Spare Keys". The process takes about 30 seconds. You can program up to 8 keys for the FS.
NOTE: You must have two working keys in order to program a third key, otherwise it must be done by the dealer.
You can also buy an extra remote on E-bay.
Make sure that the e-bay listing specifically says it is for a Freestyle.
Just out of curiosity, what is your MPG? I don't "punch" my FS...
Don't most cars these days have knock sensors? I'm not certain our Freestyle does (probably does). A knock sensor will sense detonation (knock) and retard the timing, which hurts gas mileage. High altitudes will cause timing advance, helping gas mileage.
In Colorado, we see 10% ethanol gasoline mixtures. That alone drops gas mileage by about 1%.
This is the link to the Ford owners home page. You can sign up your vehicle by filling out the form. Once approved, you can request information on your vehicle. Every Ford with a factory keyless entry has a code programmed at the factory. You can add additional codes, but the factory code is "hard programmed" and cannot removed. All other codes that you (or the previous owner) entered can be erased and set back to "factory". The code is given to the new Freestyle owner on a card in the delivery information. Since yours appears to be missing the card with the code, the friendly folks at Ford Central should be able to help you retrieve it. There is also an 800 number to call. Be persuasive. Also, you might check with another Ford dealer who wants your business more. Many will do this for "free" to get your business. Or go back to the dealer you talked to, and ask to speak to a manager or the owner. You might get a cheaper result. Example - some dealers charge to program new keys, something that you can do yourself with instructions in the owner's manual. When I lost one of my keys and only had one (the dealer had to program it then), my dealer programmed the new key (the key itself cost $32) for "free". Took them 2 minutes. Always get an extra key and a keyless entry (cheap on eBay) because you need 2 of each to program yourself. Another option - contact the dealer you bought the car from (even if they are a non-Ford dealer) and push them to resolve the issue. Perhaps they also own a Ford dealer, or can make arrangements to cover the cost of retreiving the code. They should also be able to contact the previous owner in many cases for the code. You paid big bucks to this dealer, so make them make good on the problem. Best luck.
True for the keys, but not for the transmitter. You can reprogram extra transmitters with only one. In fact, from the Owners Manual, I'd say you can program the key fobs even if you have lost all of them.
The key is a different story, and all FS owners should buy a replacement 3rd key as soon as possible to avoid paying for dealer reprogramming.
Page 95 in my 2006 owner's manual.
Jim
My RSX has the same type of system. I actually had my warning light come on one day after a fast moving cold front passed through. My guess is the extreme drop in temps caused the gas to contract enough to register a loose cap with the computer. I'm unsure what the actual cause was but tightening the cap and then cycling the car through one or two engine starts/stops reset the computer.
The dealer finally found a field engineer who claimed to have seen a similar problem on a car in Maine. Replacing the mechatronic unit apparently was the answer. This part is a component of the CVT, as I understand it, and is involved in changing the CVT operation. Well, after having the car back for a couple of days, no problems. Need to wait much longer before I'm comfortable though, I once had it back for 4 days before the problem returned.
If it fails again the car is officially a lemon. They've had 3 tries to fix it. I really hope it's fixed this time!
My wife was parking on steep hill going down hill. She did not get it right the first time, so she had to back up. When she wanted go get back in the parking space she forgot to switch from R to D, but the car did not have any problem rolling forward in R, due to gravity. I'm glad it still works.
I have a service schedule tomorrow. I will report on what the service guy says.
Also I complained (over the phone) about my 12-14 MPG and asked if they have that capability to reprogram the OBD. The tech said "yes" and then continued to say that will pull the TSB's and if that's necessary they will do it.
I am afraid that they are reluctant of doing it. Any advice on how I can push them into updating the program?
Tnx
There is a TSB about the thing where the RPMs fluctuate after slowing down from 60 to about 50 mph or so. I would just tell the Ford dealer you've seen this, and that you heard there was a TSB to cover it, so they will just re-flash (load new software) on the engine computer without further speculation. The problem has been known to be hard to duplicate, so they likely won't spend the hours necessary to try to duplicate the problem.
I wonder if the CV joints (axles) haven't been out-of-spec a little, and have been creating excessive friction all this time you've been getting low MPG????? This is just the thing I suspect with low-MPG vehicles, since there must be some physical explanation for excessive fuel consumption (dragging brakes, or CV joints, or tranny, or wheel bearings, etc.
I've seen CV joints go bad on 3 cars I've owned, but never this early, so chances are they've had something rubbing together in there, causing higher drag (friction) and eating extra gas.
Well, I've seen "acceleration" lanes so short that if you really were trying to get up to 75mph before merging, and nobody let you in, you'd be wishing you'd slowed down and stopped!
Not sure if Atlanta's as bad about that as Houston is, though.
The tech seemed to care about my MPG (this one hurts bad). He mentioned that his wife just got a Mustang GT and she gets better mileage than me!!! Thank you!
Dudes and Edmunds.com
I just saw a video (on edmunds.com) about the new Audi Q7. Not an outstanding creation, but not bad. Strange, I never heard the editor saying that the Q7 is "down on power". It gets to 60 Mph in 8.9 seconds, "a full second slower than Mercedes R class".
That means that the Q7 is significantly slower than my Freestyle and the R is just a little bit quicker. I think I saw some place that FS gets to 60 in 8 seconds.
If this is an indicator of power / weight ratio, it seems that FS has what it needs and I would like edmunds.com to remove the mention "except power" from this vehicle's overview.
If I am wrong and a 0 to 60 test does not tell the full story I would like a lesson so I do not get myself into sticky situations on the highway.
Thank you!
Click the "Feedback" link at the bottom of this page and tell them!
tidester, host
I recommend turning off the CAPS LOCK on your computer. People tend to ignore messages written in ALL CAPS.
tidester, host
If automotive technology had progressed as fast as computers have in that time we could pick up that sleek new Freestyle for under a hundred dollars - and get 100s of miles to the gallon!
tidester, host
They also said that they've put the computer on the car and it read 22.5 MPG.
The car is not back yet, but here are the details of the ticket so far:
53 Warranty Done CUSTOMER STATES CUSTOMER STATES POOR FUEL ECONOMY ABOUT 215 MILES PER TANK AVERAGES ABOUT 12 MPG CHECK AND ADVISE
BODY / CHASSIS / ELECTRICAL (BCE) - TEST
EEC (QUICK TEST) - DIAGNOSIS
ps - i have the "winking/blinking" headlights w/ key and power off. normally happens when i push my expedition key fob or hit garage door opener - both items flood the fs with rf energy, which apparently "juices" the light circuit?
Any suggestions?
Here's one guy's technique on the OB:
leo2633, "Subaru Crew: Problems & Solutions" #6174, 22 Jan 2006 10:34 pm
Steve, Host
- Chad