Rsoetidjo

Are there any aftermarket coil packs for our car? I'm doing stuff to improve the gas mileage. I did seafoam, put gas treatment on the tank, changed the spark plugs. It's 03 TL-p with 105K. thanks

bruistopher

did you do the timing belt and water pump change because you are at 105k? and that's required right about now...

01tl4tl

as long as you put NGK Iridium plugs in it you have done what you can, assuming air filter and cabin filter are new
repeat seafoam in gas and vac port after a month then good for a year
Add air pressure to tires- 32 is a joke

Rsoetidjo

Ya, I'm going to do the timing belt & water pump next week.

rockstar143

iTrader: (6)

I was going to say maybe check connections of coil packs...and put some dielectric grease to make sure they never seize. I was getting a misfire on cylinder 4 on my RSX...I switched it with cylinder 1 and never got check engine again. I don't think the coilpacks are an effeciency gaining item.

Rsoetidjo

The car running just fine. I don't have any mifire or anything. I just want to know if there anything else I can do to improve the gasmileage. Because I drive the car about 350-400 miles a week. even 1-3 mpg better. it's all gonna add up.

01tl4tl

air filter, tire pressure, and the rest you have done

rockstar143

iTrader: (6)

Lol...I was actually going to refer to you 01tl4tl for guidance.

I can tell you...I have manual, so maybe I have more control here...but when I make a concerted effort to not go over 75mph on the highway and really focus on barely touching the gas and shifting early, I've seen as much as a 4 mpg increase on a tank. My usual tanks get about 250 to 290 w/gas light on...I went 340 on this last tank driving like a grandma the last half of the tank. Driving style makes all the difference.

Coil packs are not the same as the old distributors that got corroded and needed to be changed ot improve spark and effeciency in the sense that they either fire, or they don't. It's all electronic. That is my understanding at least.

friesm2000

iTrader: (4)

yeah pretty much what OP has left is the air filter, since the rest of the car seems to be up to date on the maintence

but as said increasing the tire pressure will help some, 36 psi cold seems to be about right for me, with given even tread wear across the tires

also another thing you can do is slow down on the highway, and don't accelerate as hard in the city, but it's no fun driving then , also try coasting to lights and such, vs accelerating to them and hitting your brakes; not going elaberate anymore on that cause it's easy enough to find how to drive for better MPG on the internet

also not turning on your A/C especially during the summer, will help too, but not very comfortable though, also getting tint on the windows (if not done already) will also help the A/C system not have to work as hard (so better fuel mileage) from the smaller heat/sun load being put into the interior itself


btw OP i use to live on Merritt Island

fsttyms1

bump up the tire PSI to 36-38 and you will gain some, make sure to use premium fuel, make sure your air filter is clean, occasionally add seafoam to the fuel and intake to clean things, and make sure plugs are good. There arent any coils for our cars. Especially ones that would improve mileage.

GujuTL

hey did you notice any increase in mpgs after doing all this? I have a thread about a similar question and was wondering what your results were....would be a great help for me cuz i also drive like 400 miles a week for college...like you said...even 1-2 mpg gain adds up. Im thinking about seafoaming and changing plugs.

01tl4tl

that will help any TL get better mileage~
tires 1mpg, seafoam 1-3, driving style, coasting to lights 1-3++???
AC- dont even ask me to give that up in the summer!

DO run the ac in winter at least once a month for 10 minutes minimum- that conditions the seals, circulates the lubricating oil inside etc- saves the compressor
Using front defrost activates ac on most modern cars

Do seafoam twice in gas and vac port, a month/1500 miles apart
and do the engine oil method with some driving just before change, a free spinning engine runs better

wait a few days to a week after first seafoam before replacing plugs- a lot of stuff is being loosened and removed immediatly- then more as the gas goes thru the system

01tl4tl

let us know your results- with your miles weekly it should show with each change

Cold weather sucks pressure out of tires

The TL likes a little bit of throttle on accelleration- say 2500-3000 will get it to speed and then use less gas than tiptoeing to 35 then having to brake for the next light

friesm2000

iTrader: (4)

same here, but also the reason for getting the windows tinted, to help minamize the heat load from the sun, so the ac does not have to work as hard to keep the cabin cool, so less load on the engine which equates to better mpg

friesm2000

iTrader: (4)

general rule of thumb is 1psi for every 10F degrees in ambient tempeture change

btw my tire runs at about 40 once warmed up from driving on them, which is as said about 36 psi cold

01tl4tl

I forgot the most important thing for gas savings- what I realized as soon as I drove somewhere today observing my rpm etc-

the best gas saver is the cruise control

Auto trans owners- once you are at 35mph in town, set the cruise, makes a big diffferance in town and on the freeway
Move your foot away from the gas pedal- the weight of it resting on the pedal adds more throttle than required, wasting gas

Give that a try- also cuts down on tickets in radar happy towns- Im going 40 all the way down this road without variation

In the rain I noticed how much the speed varied with foot pressure driving instead of cruise
dont use cruise in rain-wet roads. it can freak the speed sensors out when you hit a puddle and hydroplane~

friesm2000

iTrader: (4)

or for rain, stay out of the tire ruts where the water likes to collect, (so basically stay on the high parts, where the water drains right away), cause the tires gotta push the water out of the way


like i have notice when you do kinda drift into the ruts, you kinda lurch foward from the water slowing down the car, so it takes more throttle to maintain the same speed
let alone less likly to hydroplane staying out of the ruts, the tires do not need to push as much water out of the way

totaledTL

Good luck using cruise at that speed in town. Too much traffic around here to do that- not worth it.

Rsoetidjo

After I did seafoam and gas treatment. Gains about 1-2 mpg. Now I get around 25-26mpg highway and around the town (with cruise control). I Changed spark plugs and timing belt this past weekend. And the guy how did the timing belt. He said I should clean the EGR valve. because when he open up the cover on the intake manifold, It's black. He said by clean up that and the intake manifold, will gain another 1-2 mpg. And this guy know the stuff. He's acura certified and NSX certified. All people who have NSX around FL, brought there car to him to get fix or to do maintenance. Also I have 35psi on the front and 32psi on the rear. And I think works the best. the reason I put 35psi cuz the weight of the engine. ANd 32psi cuz barelly have weight on the rear.

01tl4tl

its not the egr valve that needs to be cleaned but the ports inside the intake manifold
see diy Thermoblock install and Egr CLEANING

tire psi- 35 or 36 all around is what you want on stock tires, and same or slightly higher psi in the rear of the TL makes it handle a little better

01tl4tl

egr port cleaning on 99s was a recall, and all newer years a DIY every 75k miles or so

Rsoetidjo

I think I'm gonna clean the port this coming weekend. Hopefully gonna gain another 1-2 mpg.

rcb2000

turning on the defroster does the same thing no need to use the A/C

friesm2000

iTrader: (4)

did you not f***ing read his post???

:shakehead
not trying to be an ass, more just saying, but i know my comment as said is not best of ways though

01tl4tl

I love it when fries catches one IN my favor lol

Yes its true as we both said! use ac in winter to keep it running great in summer
We have many ziners who dont even use seat heat so why would they need defrost?
they can use the ac controls to ON- fan whatever and drive
Its more something cars with nav have to think about- the ac knob not being right there on the dash