engine light?

[pacman]

my 91 3.0L v6 has a problem passing emission tests and the engine light is on.
-I want to know how to look up the codes for the check engine light. it comes on after a few minutes of driving. i don't notice a difference in the drive ability.

 

[ric]

when the light comes on, go to Autozone, Checkers, CarQuest, they will scan it for free.

 

[pacman]

i'm up in canada, they don't do that here.
is it an obd2 connector? obd1?is there a manual way to find out the codes? i would rather spend 100 dollars on the code checker then 40 to go to the local garage.

 

[ric]

sorry, Im not sure the correct name of the tool, I hear they are expencive, I know theres a website somewhere that lists the code, sorry I cant be more help, hopefully someone will chime in with the link

 

[pacman]

thanks man. i hope so. its sitting in my garage until its fixed for emissions.

 

[ric]

http://www.toyota-4runner.org/newreply.php?s=&action=newreply&threadid=47225

http://www.toymods.net/forums/showthread.php?t=34319

thats the best i can do, lol it will help but not a FULL list (i dont think)

 

[postaL]

this link will be you friend.

http://www.off-road.com/toyota/tech/codes/index.html

 

[rustyrazor]

I'm not sure if your would be an OBDII or not.

I ssem to recall seeing something in the Haynes manual that shows how to check the code by using a piece of wire (paperclip) and connecting two terminals from the code reader hookup.

I've done this on some of my past cars and what it does is when you make the connection and then turn the key on without starting the engine the check engine light will flash the codes.

I can check my Haynes manual later to see if this method can be used with the 4runner and then I'll get back to you.

 

[rustyrazor]

I took a quick look at my haynes while at home and I didn't see the method in there.

I do remember seeing it somewhere. Here's a website I found that describes the same idea in general terms and then another thread from another site that seems to get into more detail.


http://www.off-road.com/toyota/tech/codes/

http://www.trustmymechanic.com/forum/viewtopic.php?f=1&t=16718&start=0&st=0&sk=t&sd=a


The second site may be where I saw this before. There's alot of good info in that thread.

 

[pacman]

thank you all for the help. tomorrow i will check it out.

 

[ovrrdrive]

Our trucks are ODB1 so a newer reader won't work but you don't need it anyway. As mentioned just short out the terminals int he diagnostic box under the hood and the engine light will flash the code at you. I'm not sure what the terminals on the 3.0 but they're the same ones you short to set the timing. It should be on your under hood sticker which ones to use.

Then once you have the code just search the internet for the code. You can probably find it in the archives here or on Yotatech too.

 

[rustyrazor]

I did end up finding the method in my Haynes manual so if you buy the haynes manual ($20) you can follow the instructions.

The method in the haynes is similar to the methods described in the links that I posted earlier.

 

[pacman]

i got two codes, 42 and 52.
I'm pretty sure its the speed sensor and a knock sensor.
my odometer stopped working a little while ago, I'm not sure about the knock sensor.

 

[Pioneerof2003]

hey

does anyone know if you can use the jumperwire method while driving the truck? my code is not stored in the computer and the light only comes on when the engine is running.