basslover

I get about 150 miles to the gallon!

WHY!

I replaced spark plugs, did seafoam, changed oil...

Can it be the injectors? I thought that injector problems would cause the car to run lean??

WHAT IS IT!?!?

wingster

150 miles to the gallon or to a full tank of gas?

1993ES300x

wow 150 miles to a gollan is basically going downhill the whole trip....

Lexmex

what makes you think you are running rich?

I have a ton of lean errors with my setup and now I get about 14 to 15 after all my recent modifications.

llcoolpass

i'm sure you thought toreplace the oxygen sensors and check for codes resting your foot on the brake pedal slightly by accident or damaged calipers

basslover

No 150 miles to the tank of course.

Well I get smoke out of my tail pipes (white) and it smells like gas.

I actually cleaned the front oxygen sensor with carburator cleaner...

Anything else?! Ideas?

llcoolpass

the way to clean them is with a propane torch.
then you can also bench test them.

i dont get it, why are you trying to clean it? have you replaced it yet?

3000

Is your car misfiring? Just wondering, because I have that problem and it really smells like gas when I'm standing at the back of the car.... oh and did all the seafoam burn out of the system?

basslover

Clean them with a propane torch? WHAT?!

Yes its been a while since i did the seafoam about a week and a whole new gas of tank...

How do i get a check engine light code? Where are they so I can look them up? (the codes)

3000

I have a thread called OBD1 Check Engine Light Codes. It might help. Here: https://www.clublexus.com/forums/sho...d.php?t=324049

csaxon

Possible dragging brake but usually 02 sensors.

cha41ppy

Basslover depending on your year (mines a 99) it may be an air fuel ratio sensor(fancy oxygen sensor). If you're having misfire codes especially. If you run into an issue where u need one quick check out factorylexusparts it's 150 with quick delivery. # is 89467-48011 (supercedes 48010). Look at the number on the actual part if you can see it. Cleaning the sensor won't do much if it's done. Check out one of my threads, I had a problem a while back with similar gas mileage, white smoke (gas, rich) and poor driveability (intermittent). If you go too rich for too long with so much gas reaching the exhaust, you can ruin the cat $$$ (i think)

fju2112

get a code reader from harborfreighttools.com (or pick one up at a retail location - $40). determine what codes you have and go from there instead of assuming what the issue might be. i had a too-rich code on a VW and it turned out to be a huge issue w/ the gas tank, but a symptom of the problem was the O2 sensors and cats were going to wear down too quickly. first get the codes read, then go from there would be my suggestion.

basslover

Ok, I read the code and this is what it gave me...

----- Code 25 and Code 26 Air fuel ratio fault (for ES300 & SC300 models) -----

?? What is that again ?? And how can I make it all right again ??

fju2112

you need an OBDII code...at least for me, im not sure what code 25 and 26 means.