Post by kobrak on Jul 28, 2005 18:43:23 GMT -6
Folks, Its been a while since I've dove into the car computer world. My wife came home tonight and the car had the old check engine light on and it was runnning rough. Is this thing an OBD II type diag computer? Is there anyway to pull codes without buying a tool? I remember one used to get away with shorting two pins in a plug, then counting the flashes to know the problem. If this is not possible anymore, what Tool should I buy to do the diag with? Thanks everyone for your help:)
OK, I got back from vacation and took another look at the car last night. I had pulled a code of P0300, which reads ignition/missfire. I had pulled both coil packs or banks from the 3.5L and I ohmed each coil out. Each coil read about 3.1 to 3.2 k ohms. When I had pulled the plugs on the car the first plug in front of the motor, looking to the far right seemed a bit off color compared to the rest. The first thing I did was reverse the coil banks to see if the problem would follow. I buttoned up everything and fired it up. Without the injector plugged in the car had the exact same miss. I ruled out the coil bank right there because the car would have been down two cylinders if the coil was bad as I had moved it to the rear bank. Here's where it gets interesting.............I plugged the injector connector back into the injector and fired the car up.............runs great!!!!! I believe I am dealing with an injector that is about done. It must stick or something and by removing and plugging the electrical connector into the injector it must have jarred it a bit to cause it to start working. Either that, or the connection itself was at fault. I'll let everyone know what happens if it fails again.
OK, I got back from vacation and took another look at the car last night. I had pulled a code of P0300, which reads ignition/missfire. I had pulled both coil packs or banks from the 3.5L and I ohmed each coil out. Each coil read about 3.1 to 3.2 k ohms. When I had pulled the plugs on the car the first plug in front of the motor, looking to the far right seemed a bit off color compared to the rest. The first thing I did was reverse the coil banks to see if the problem would follow. I buttoned up everything and fired it up. Without the injector plugged in the car had the exact same miss. I ruled out the coil bank right there because the car would have been down two cylinders if the coil was bad as I had moved it to the rear bank. Here's where it gets interesting.............I plugged the injector connector back into the injector and fired the car up.............runs great!!!!! I believe I am dealing with an injector that is about done. It must stick or something and by removing and plugging the electrical connector into the injector it must have jarred it a bit to cause it to start working. Either that, or the connection itself was at fault. I'll let everyone know what happens if it fails again.
