Air Fuel

[KX2000GTP]

I installed an Autometer Air/Fuel gauge and I am having a problem. I connected my signal wire to the O2 sensor that's in the Engine Compartment on the side leading to the PCM (Tan Wire) Hot is to the ignition switch with a fuse inbetween the Ign switch and connection to the gauge. Ground is underneath the steering column. The problem is that I read Lean all the time, but the lean reading is very dim. When I start the car, the gauge lights up fully then backs down and stays on Lean. Apart from checking the voltages is there anything else I can do or does anyone have any ideas?

[KX2000GTP]

OK, so I checked the voltages and can't really tell anything, it fluctuates to much to get a good reading with my multimeter. I disconnected the plug that goes to the PCM and started the car...NO codes NO SES light, but the A/F gauge stayed on Rich. Plugged the O2 back in and the gauge went back to lean. nothing changes on WOT, or idle (meaning the reading stays lean). Where did I go wrong? The connection to the sensor is soldered and wrapped in elec tape. I double checked all of my connections to the gauge itself, made sure they were crimped tight and such. Anyone??? Bueler? Bueler? Bueler???

[KX2000GTP]

So, Big Ups to BNaylor, Your help is greatly appreciated. Here's a tip for anyone else that comes along, IT'S THE PURPLE WIRE, NOT THE TAN!!!

[BNaylor]

Originally Posted by KX2000GTP

OK, so I checked the voltages and can't really tell anything, it fluctuates to much to get a good reading with my multimeter. I disconnected the plug that goes to the PCM and started the car...NO codes NO SES light, but the A/F gauge stayed on Rich. Plugged the O2 back in and the gauge went back to lean. nothing changes on WOT, or idle (meaning the reading stays lean). Where did I go wrong? The connection to the sensor is soldered and wrapped in elec tape. I double checked all of my connections to the gauge itself, made sure they were crimped tight and such. Anyone??? Bueler? Bueler? Bueler???

Wrong wire. It has to be connected to the purple wire at the 02 sensor which is:

H02S 1 Hi In

Good luck!


BTW - You are welcome. That's what we are here for to help one another.








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