ok i just got this car have not done any engine mods on a few "look" mods.

i drive mainly highway 15 miles or so and about 3 in town a day. im only getting 20-21 mpg what gives? air filter did not look dirty when checked. noticed that my intake tube is ripped right where my throttle body is by the hose clamp but still a solid connection. only 92+ octane, what can i do!?

 

get a new hose or intake..... I'm getting 26 mpg and I am between cruising and beating.... and I use 87.....

 

I get 24-25 average with a 6MT. But that's driving like a grandpa....just slowing down and being easy on the gas pedal should help the gas mileage.

 

The EPA ratings for the '04 TL A/T is 18/26, manual 18/28, so depending on the type of driving conditions you experience, the mileage will vary. You'll read about the outrageous highway numbers posted here, but in the normal everyday conditions they won't be seen. If you are using the computer, check the mileage mathematically at time of fill ups to be certain of the number, but driving habits play an important part of the car being frugal with gas.
Just remember, it’s a 3600 lb V-6 so you’re not going to see great numbers.

 

17-18MPG to a constant 21 with a leadfoot (6mt sorry) Seafoam gave me and extra 3mpg and im loyal now to do it every 10K.

 

first replace the intake hose
Looks solid and SEALS are different!! air leaks mess up the computer

Then understand it takes about 10 miles of freeway for the car to get warmed up fully, to dry out the water vapor in the exhaust and recharge the battery after starting.
Acura says to go on a 30 minute freeway cruise once a month if you drive short distances each day
Really important to dry out the cars oil fluids!!! wiki hygroscopic for info

Use the ac 10 minutes to keep the seals lubed, also run to heater 10 minutes at least once a month to prevent problems next winter

 

seafoam would help the OP car by removing heavy carbon loading from those short drives

Do the intake vac port method - 1 can in main vac port and gas tank- 1 can in 1/2 tank
See the DIY

 

check the tire air-pressures, and also how many miles on the car?

 

76k on car

 

When I did mine I used 1 bottle. 1/3 in the intake vacuum intake line 1/3 in the gas and 1/3 in the oil.

So your saying 1 whole can in the intake and gas tank?? so your using 2 cans total and no seafoam in the oil did i do it wrong??

 

Oooooooooooooooooo hell yeah your car needs it bad

 

He needs to replace that leaking air tube that goes from the airbox top to the TB inlet
then ok to seafoam
Notice how its all sealed with rubber and screws and hose clamps holding it tight at the airbox...has to be airtight all the way!!

seafoam use as much of 1 can as it will take in the vac port- see the DIY
Try it with Deep Creep- seafoam aerosol can found at autozone

in the gas, 2 oz per gal is cleaning dose- 1 can to 1/2 tank

The engine oil you do when you are ready to change the oil, then 1/2 can in the oil cap and idle it in driveway or drive to get changed.

I put a new filter on, added seafoam and drove 150 miles, changed oil and filter
Wow was there lots of crud in a new filter!

 

after that- if you have 70K miles or more its ready for new NGK Iridium spark plugs'
Those are stock plug and work the best
50 bucks for 6 and a dollar tube of anti sieze for the threads
Makes car run like new

 

ronjon change you oil and filter NOW
It wont have hurt anything, you can run it for a month as long as you watch the dipstick color and sludge attachment..it will be clean in the oil passages which is what you want

I wonder if the gen3 prob with sticking vtec sliders is due to oil coagulation and needs to be foamed every 2 changes to keep it working-- I do and Im a gen2~

 

I rarely drive on highway or go over 50+ mph and usually get 17-22 mpg per tank. 20 mpg seems about right for around town driving.

 

lol my best mpg is 18 !! i don't know if my 20 inch rims have anything to do with it !!!

 

I bet they are triple chrome too huh??

 

^ lol

 

naa

 

good info / advice

 

you have a combo problem.... but u ims are the least of it.... u need to get that rip taken care of asap... thats killing ur mileage, even though u have 76k on the ca u should still see better numbers than 18 mpg... i have almost 90k & i see 20/21 city & 27/30 hwy

idk about this seafoam stuff these guys are talking about so i cant comment on that, but before u do anything id get that tear taken care of

 

make sure ur tire pressure is good, and then seafoam the car ... u should be good after that

 

thanks everyone i will seafoam here in a few days after i order that part from acura. acura of fife never has anything in stock lol

 

if you have to order the tube why not try one of the dealers on here that support azine

tim at hondaacuraworld has an excellent reputation

seafoam- search and yee shall see- of the benifits, many they be~

 

i just got the baby of my dreams 2004 and my 04 averages 19 but it all depends how you drive.... im getting cold air intake soon i heard that adds about 4 or 5 more mpg so that should make a big difference ill let you know when its done.. and the difference i see

 

better than me...19mpg avg from 6 miles on

 

I seafoam the car today lets see what happen i hope i see an improvmente in MPG, will a K&N filter will help improve the mpg or make it worst??

 

K and N filter won't help you much, was the filter ever changed at 60K?

 

my car have 52k

 

please follow the seafoam diy here in the garage section- ignore utube

Use a full can in 1/2 tank of gas and 1 can in the intake vac nipple

Buy it as `Deep Creep` seafoam in aerosol can form-easy to do the vac port, and clean the TB plate inside the TB

 

A TL on 20s and sticky tires wont get great mileage--there is a tradeoff in all things
More flash..less mileage
More Power,,less mileage, except it can be used to get better miles,,, if driven gently

example k&n gives more airflow, = less throttle needed, = less fuel with better combustion for better torque- thats the power that makes the car go- torque

 

I have an '04 manual and an '05 automatic (the wife's). The first summer I had my '04, I did a week long mileage test and yes, the old fashioned (read that as reliable) way. The week was work commuting and my commute is through a small city and residential area, to and from work in generally, moderately heavy traffic. During this week, my average was 27.98 MPG. That is the best I have managed and I was trying to get the best mileage - not being nuts with slow driving.. just not being hyper on the throttle.

That September, I went on vacation and for the first leg of the trip (260 miles), I averaged 33.94 with the A/C running the entire way and no special mileage techniques used.

With my present tires, I manage just under 24.5 MPG during my work commute (same route described above), driving normally which for me is not aggressive but also not granddad. Road trips manage slightly over 32 MPG.

 

The worst I ever averaged was 14MPG city and 23 HWY that was with my 19'' Axis Hiro with some cheapy Nankang NSII and perhaps a bad alignment.

I threw my stocks + seafoam and back to 24 city and 29 hwy same bad alignment.

My current set up is 19" Ronjon Legends with Nitto Invo and im 21/22 city and 27/28 HWY and yeah stupid bad alignment she pulls to the right slightly

 

I would say it either your car or the way that you are driving it. I get 23-24mpg on a six speed with out even trying. You might check your car. I also have 127k on my TL. maybe its the auto?

 

if i baby it, i usually can get 28MPG out of it 80% hwy/20% city... but normally i get 24-25 mpg...

 

ok thanks for the info !!!

 

You have any hills in your commute? Cuz I live on a hill, and have another hill of the same size in the middle of my commute to work....

My commute is 40 miles one way, of mostly freeway driving... However, becuase of those two hills, I only average 19mpg when I drive, or 20 when my wife drives.

On my other cars which have instant readouts of fuel economy, I saw that even when I'm only doing 1900rpm going up the hill, my fuel economy drops to like 8mpg.

I've taken the TL on roadtrips before and averages close to 30mpg, so I"m pretty sure those hills in my normal commute are responsible for killing my fuel economy.

 

update. finally got around to chaning my filter out tonight with a k&n drop in so we will see what happens. my old one looks like it hasnt been changed ever(76k miles) changed my cabin filter and it looked the same.