LS swap Truck, car O2s interchange no activity problems
06-03-2008, 04:59 PM
#1
LS swap Truck, car O2s interchange no activity problems This may sound odd however. LS swap using 02 f car pcm and operating system. I'm using 04 fullsize chevy trucks 02s gm pn 25333812 and I keep getting insufficient activity bank one and two and it will not go into closed loop. Do the truck and the car 02's operate differently and the pcm cannot recognize what is happening. I swapped the 02s into my rainier v8 and they worked perfectly and showed no codes. The 02s are pinned in correctly to the pcm and I have verified the wiring all of the way down. Do I need to go ahead and order a set of car 02's
06-04-2008, 07:51 AM
#5
The harness and pcm are an 2002 camaro. The 02s are for an 04 fullsize chevy pickup. I looked up the diagrams on alldata at work and they match exactly between the truck and the car. In the next few days I think I am going to hook up my scope on them and look at they waveforms just to see what is happening
06-04-2008, 08:40 AM
#6
re-look at the schematics. They are different. The pinouts are the same on the O2 sensors but the ground for the heater comes from the PCM for the truck and G112 for the Camaro. G112 is the ground at the Left Rear cylinder head. Check your grounds.
