I know there is a difference in the two of them but can someone either explain the difference or post a link that does? I've got a nice, fairly new Bosch unit that was in my GVR4 for a little while. I'm planning on putting it in the 1990 1G that I have apart ( THREAD ) but I'm getting conflicting info based on part numbers.
Bosch lists part number 13598 for both 1990 and 1991.
Denso lists part number 234-4643 for 1990 DSMs and 234-4007 for 1991's.
I'm guessing that the voltage output is slightly different for the two different model years but I'm concerned that the wrong sensor would skew the fuel trims' accuracy.