I'm pretty sure only the later OBD2 models have two O2 sensors. The second sensor is only to monitor the performance of the converter which isn't reported by the old style OBD interface.

Well, I looked under the car and I didn't see any sensor..but that doesn mean it wasn't there at one time.  I also looked at the exhaust diagram (Factory Repair Manual) and it didn't show another O2 sensor either, just the one on the exhaust manifold.

there should be a little adapter switch going the the light on the dash, Unplug it, or if you cant find it, black electrical tape always works..

I just disconnected my negative battery cable and then reconnected it. No problems since.

I just disconnected my negative battery cable and then reconnected it. No problems since.

Thats what Ive been saying!!

Quote from: olija on January 29, 2007, 10:43:58 PM

I just disconnected my negative battery cable and then reconnected it. No problems since.

Thats what Ive been saying!!

I've tried that and it didn't work.  The Factory Manual also says to clear the memory by pulling the Tail Lamp Fuse for 20 seconds.  That didn't work.  But as I state earlier, I did flip the switch below the steering column and that will turn it off but it will come back on with 15 20 minutes of driving.  I have run the codes and I get code 12 (everything is operating fine).  I've got to get it smogged and the only thing I need is for that damn light to come on while it is being tested.  Even better DMV (bastards) are making me take it a smog only station where they look at it with a fine toothed comb and charge a lot more money.  Eventhough it passes smog with flying colors, they usually look at it more suspiously because it looks like hell with dents and no carpet.

I have noticed the check engine light goes off a lot on these little buggers.   MY Girlfriends 97 Tracker, my buddys 99 Vitara with the 1.6, and my 96 Tracker all have the check engine light go off here and there.   HERE is n easy tip.

Disconnect your battery overnight.

You should only need to disconnect your battery for 2 hours. 

On the 97 and 96 Tracker it is probably a problem with the EGR valve.  You can go to pretty much any auto parts store and borrow their OBDII computer and see what the error message is.  I'm not sure if AWK has a troubleshooting section on his faq, but I ended up tracing the problem down to a bad EGR Relay Solenoid  Valve on the back half of my motor.  Now that I know the procedure, it is pretty easy to test for.

Start up the engine when cold and reach around the EGR valve and squeeze it.  Your engine should die, or try to die.  This means the EGR valve is ok.  If so, then work your way down the vacuum system using the diagram under the hood.  Just pull each line off and use a vacuum test tool, or just give it a good suck.  The EGR valve will probably open up.  The EGR Relay Solenoid Valve should be closed when the engine is cold.  If your wondering, just pull the power and see if it has 12 volts.  If it does and you can still pull air through it, the relay is busted and needs to be replaced.  Hawk Suzuki is probably the best bet to get the parts, as you can just tell him if it is the front or rear one. 

As for the 91, no idea.  I would try replacing the 02 sensor, if not you might have to take it to a shop.

   Ever replaced the ECM?  I'm wondering if the light on without showing a code isn't an early sign that the ECM is going out.

turn the key ahead, push the gas 2 times and then start the engine. turn the car off and the light should go off. if not there is an IRL switch under the hood in the fuse box on some models

   Ever replaced the ECM?  I'm wondering if the light on without showing a code isn't an early sign that the ECM is going out.

I hope not, I really don't feel like spending the money on an ECM.

turn the key ahead, push the gas 2 times and then start the engine. turn the car off and the light should go off. if not there is an IRL switch under the hood in the fuse box on some models

first time i heard that

does it work?

Okay folks,

I got it solved.  It seems like it was the O2 sensor.  I replaced it and it no longer come on.  So, $20 and problem solved....good times

Okay folks,

I got it solved. It seems like it was the O2 sensor. I replaced it and it no longer come on. So, $20 and problem solved....good times

where did you get it from?

and how hard was it? (wiring and everything)

i heard that sometimes they "weld" on and theyre tough to get off

Some just screw in.   Getting them out can be a bitch though.   When I got my header installed, the old o2 sensor worked, but they couldnt get it out of the old manifold without destroying it.

I sprayed a litte WD-40 and let it soak for 5 minutes.  After, I got a big closed in wrinch and broke it loose.  I actually came out a lot easier than I expected, very little effort was needed.  The new one was a universal O2 sensor, so I just cut the wire from the old one, soldered it to the new O2 sensor and screwed it in with some antisieze on the threads.  Very simple and fast.  Although, if you have a newer Tracker you might have an additional O2 sensor after the Cat.