sick_46

iTrader: (3)

What I have is a fox body with a lq4 swap. the computer that was used was fom a 03 escalade. the wiring harness is from a 02 escalade. I need to replace the upstream 02 sensors. Every part house shows a different o2 sensor for the 02 vs 03. The only difference I can find is the harness length.
What sensor should I buy. I would think with them both being 4 wire that they are the same sensor. What about the universal 4 wire units? Any good?
Thanks for the help!!

i r teh noobz

iTrader: (4)

Look on Lt1swap.com. There is a section for the 02 sensor differences. One type grounds to the engine and the other grounds inside the PCM. You will need to modify the harness for that combo.

sick_46

iTrader: (3)

Is there a way to look at the 02 sensors that are already in the car to figure out what I have?

406chvycamaro

iTrader: (7)

Wouldn't recommend the universal sensors, they aren't very good. Your factory sensors should have a Number on the side that they can cross reference at the parts store to something they carry

i r teh noobz

iTrader: (4)

One type will have a black plug and the other will be white. Check Rockauto to compare pictures and see what you have.