Last post on Jun 22, 2009 at 10:00 AM
You are in the Chrysler Pacifica Maintenance & Repair
What is this discussion about?
Chrysler Pacifica, Fuel System, Performance Mods, Fuel System, Fuel Efficiency (MPG)
#49 of 64 Re: Most recent trip mileage... [starcruiser]
May 04, 2008 (9:34 am)
I own a 2006 Pacifica Touring with 51,000 mi. First I changed the oil to Royal Purple synthetic oil. Then, I added a K&N oil and lifetime air filter. And finally I added a cyclone fuelsaver. The following is a list of MPG DIFFERENT speeds:
45mph 33 mpg
55mph 30.5 mpg
62 mph 29.1 mpg
70 mph 27.0 mpg
#50 of 64 Re: Most recent trip mileage... [ddunnings]
May 04, 2008 (7:50 pm)
Hey, everything is looking for the "fountain of youth" when it comes to getting better MPG. Synthetic oils have very little impact. There have been tons of independant studies done and none have shown this. Also, additives don't work either. IF, a motor has that much friction such that changing oil would save fuel, there would be enough heat produced that the motor would melt. K&N filters will provide a legitmate improvement of a few %. You might actually see a 1 mpg improvement from one. I use them.
Cyclone fuel savers are completely, 100% bogus. First, someone has to prove that simply taking air and swirling it does anything, THEN you need to explain how the swirling effect is then able to bend around corners and angles in the upper intake. Let us not forget too that the air enters the combustion chambers by way of valves which open and close. If you have ever seen what an upper intake looks like, you would not have installed one.
In fact, these devices can actually make complete havick of your MAF. The MAF is designed to measure airflow in the intake. It is imperative that the flow be laminar in order for them to function properly and the sample tube is designed as such.
As to your data, unless you were driving on a flat surface for many miles at these speeds and verified with fill-ups, the data is not very accurate. The MPG reading uses data provided by the ECU off of the fuel tables. In the event that the MAF is now reading correctly, it is entirely possible that the car is now running incredibly lean.
#51 of 64 Any ideas on how to imporve my gas mileage
Aug 18, 2008 (1:22 pm)
My 2004 Pacifica is in the toilet regarding gas mileage. It gave me a readout of 14.5 average. Is this an eye opener for any other owners? I'm thinking tune up, fuel filter, air filter or something cold help, or is this just the nature of the beast (bad mpg)?
#52 of 64 Re: Any ideas on how to imporve my gas mileage [judykathleen]
Aug 18, 2008 (2:01 pm)
Have you checked the accuracy versus your fillups?
I switched to synthetic oil and a K&N filter and that helps a bit. It will vary how much depending on the engine and your driving style.
#53 of 64 Re: Any ideas on how to imporve my gas mileage [judykathleen]
Aug 19, 2008 (8:11 am)
You don't say how many miles are on your 04 PAC. Does it have the 3.5 L or the 3.8 L engine, is it FWD or AWD ? these are just the start of the information needed to help you. Also there are lost of minor things you can do like , oil & filters changes, tires ballanced, replace spark plugs, clean the injectors, change transmission fluid & filter. There are lots of things you can do, but if the car has been treated by schedule B or A in the owners Manual you would have a pretty good idea what has to be done. If a Chrysler dealer did the service work on it or if there was a TSB or a Recall this too would show, and you can call any Chrysler, Dodge, Jeep dealer and ask the Service dept. to look it up for you, it;s a free thing they do. If you give us the VIN # we can find some of this out for you.
However the best way to get good mpg is the way you drive. Be smooth, and even what some might call slow starts and stops. This can recall help more than all the things above all together.
#54 of 64 Re: Any ideas on how to imporve my gas mileage [farout]
Aug 20, 2008 (11:48 am)
It has <47,000 miles on it. I have bought new tires (so balanced). I had the transmission fluid changed at 33,000 miles. I do my oil changes. It had new brakes put on it. I don't think I am a fast stop/start driver. I am between looking for something else (but like the Pacifica other than gas mileage), and investing in plugs, filters etc. I will probably keep it, but don't have a clue about mechanical stuff and what to do to see if it can get better mileage. VIN 2CBGM68424R629976. I would appreciate any input to help me with gas mileage.
#55 of 64 Re: Any ideas on how to imporve my gas mileage [judykathleen]
Aug 21, 2008 (2:26 pm)
The vin # you gave me is invalid so please check it again, and see if a # got transposed. If this is the actual Vin # then there is a problem.
#56 of 64 Re: Any ideas on how to imporve my gas mileage [farout]
Aug 25, 2008 (11:41 am)
woops...Needed my glasses and a magnifier for that. 2C8GM68424R629976.
#57 of 64 Re: Any ideas on how to imporve my gas mileage [judykathleen]
Aug 25, 2008 (1:20 pm)
There are 10 recorded things in the kansas DMV. That could mean transfer of ownership, or change in financing. That is not alarming or much to be concerned about. I could not find if you have a AWD or a DWD. You have a 3.5 L engine and the 4 speed transmission. The engine is quite reliable and durable with normal care.
I would suggest taking it to a five Star dealer and have them run diagnostic test and see if anything shows up. Be glad you don't have the 3.8 L engine they do use a good bit of fuel.
It appears that your PAC has a 80,000 mile Service Contract on it, that too you will have to verify with the dealer when you take it in, but maybe you already know for sure.
Just a final thought, do you buy a quality brand of gasoline? Stay away fron Quick Trip, and MFA cheap gas not in price just not always the better quality, and 87 ovtaine is what you should use. Hope this helps a little.
#58 of 64 Miles to empty/MPG
Feb 22, 2009 (2:44 pm)
When I first got my '07 AWD 4.0L PAC I could have sworn that when I filled the tank up the Miles to Empty on the dash read 420-422. Not to long ago it started reading 350-355 and it seems to go through gas like crazy with only seeing about 300-320 out of a full tank. Also, if I fill the car up and drive home and then get into it later on the gas gauge will read about 1/8th tank gone and then as I drive it will slowly go back up to full. Does anyone else experience any of this?