Josh@KY-Turbo

iTrader: (120)

I am going tring to get my parted 98 Z28 Turbo project back to running condition with a stock 2002 drivetrain.

I bought an 02'engine and tranny combo complete to put back in my 98 Z28. I was planning to repin my engine wiring harness so I could use te 02 PCM's capability to have RTT with HPTuners. I have since changed my mind and am going to use the factory 98PCM harness. I dont want to mess with all the rewiring right now.

My question:

-What changes are needed to run this 02 engine with the 98 harness sensor wise?
-What sensors have to be swapped out to work with the 98?

I want to cover my bases before I dive into putting this car back together. The fewer suprises along the way the better.

Thanks for any help. It is appreciated.

Josh@KY-Turbo

iTrader: (120)

I know somebody has done this before...

ArcticZ28

iTrader: (14)

I thought that you for sure needed at least an 00+ PCM if not an actual 02 PCM. I could be wrong though... just going on selective memory here.

Josh@KY-Turbo

iTrader: (120)

I am going to use my 98 PCM and harness. I think I have to change out a couple of the 02 engines sensors to work with the 98 harness. I think the knock sensrs are different, and the temp sending unit may be different. I just want to be sure.

ArcticZ28

iTrader: (14)

Knock sensors are certainly different. And I'd wire up separate oil pressure and water temp gauges anyway.

Josh@KY-Turbo

iTrader: (120)

why wire up a separate temp and oil pressure guage? why not just change the sensor to work with the 98 harness?

ArcticZ28

iTrader: (14)

Because either way they aren't as accurate as aftermarket gauges. You don't have to, you can obviously do whatever you want. I just don't see why you wouldn't since you're already gonna be in there.

Josh@KY-Turbo

iTrader: (120)

I am on a budget and wanting to keep this as much of a plug and play deal as I can. The factory gauges will be okay for the motor for now. It is gonna stay stock for a while.

ringram

There was a thread on efilive.com about a few guys rewiring the 98 and 99+ harnesses even using them on LT1's etc. Take a look there http://forum.efilive.com