what can cause this? does oil change NOT done ontime could be the cause?

Help !

 

Hello,

Your computer has stored a code in its memory regarding a failure of a engine component, Possible your O2 sensors or other sensors. Have it diagnosed at a Toyota dealership and they will hook it up to the diagnostic port and get a read out of the code.

 

What year is your car?

 

94 ...

Thanks Efan and VZV21 for replying

 

You'll have to take it to the dealership or rent a OBDII scanner.

In the mean time, it could be as simple as a "loose gas cap". So make sure the gas cap is tightened 4 clicks. Gas up with the engine off. Reset the ECU by pulling the EFI fuse for about a minute and reinstall.

 

YOU ARE ONE SON OF A GUN !!!!! IT WORKED !!!!!!!!! THANKS.... MY LIGHT IS OFF NOW !!!!!!!!!!!!!!!! YEAAAAAAAA YEAAAAAAAAAA YEAAAAAAAAAAAAAA

 

all you did was reset your ecu, what will happen is that it will come back again if you have a bad sensor or problem, you have temporarily turned off the check engine light.

 

If it goes back on...it can be a number of things....from the O2 sensors, engine sensors, emissions equipment and in my case a few thousand miles ago...the EGR actuator that set me back $100. Damn California emissions.

 

Flipside,

Do you see a big diffrence in performance in gas mileage and performance over the denso platinum plugs? I have a 1996 ES300 bone stock and I just had the Plugs changed out with the platinum.

 

life can be a pain sometimes !

 

My engine does run a little smoother and mileage has only picked up about 1-2mpg more. Perhaps because the old Denso Platinums I took out were old? I dunno...they weren't fouled out or anything. It's more of insurance and longevity than anthing else. The Iridiums will go up to 100K whereas platinums are only good for 60K.

Good Luck!

 

Smoother? wow.... soon you will not know if it is running or not... Its smooth already !!


Smoothy

 

Hehe yeah...sometimes I catch myself starting the car again after it's already on. But since my car was 90,000 miles at the time I changed them, they did make a difference. I'm up to 100,200 miles and they are still running strong.

My only mods are the IK20 Iridiums and K&N Filter drop in.

 

What lex model do you have? I have the platinums in mine, but i am soon ordering the new Denso plugs, I cant wait. I am deciding between the Depleted Uranium or Plutonium. Which one should i get?

 

YOu sort do realize the difference you feel is worn plugs versus new plugs. Even if you used the Denso platinum again, you'll notice the same difference. So it's not quite comparing apples to apples there.