Couple Quick Sunfire Salvage Questions

[goser]

Hey all, I need my garage back so I'm tearing everything useful off my '97 parts car and have a couple of questions:

1) What's the proper method of discharging the A/C system?

2) The parts car has an EGR, whereas the donor car does not. Besides the absent wiring harness to the EGR, are there any other compatibility issues I'd encounter should I ever want to put the '97 engine in the '99?

Cheers!

[J-Ri]

1. The proper method for discharging the A/C system is to use a machine to recover the refrigerant.

2. The parts car and the donor car mean the same thing, just for future reference. In '98 they changed to the 2200, which is almost an entirely different engine, as far as compatibility.

[goser]

Thanks for the reply; I'm glad you understood my language errors, lol.

Also should've specified they're both 2.4L (LD9), but it seems there are other issues as well... from Wikipedia: "This engine received a minor update halfway through the 1999 model year that eliminated the EGR, increased the compression ratio from 9.5:1 to 9.7:1, and switched from low impedance fuel injectors to high impedance." So it looks like I'm SOL.

[J-Ri]

I was sure you said 2.2

So you're actually in luck. The difference in compression doesn't matter. Keep the fuel injectors with the PCM they came with, switching them will cause problems. For the EGR, all they did was install a block-off plate over the EGR passages in the head. I'm pretty sure the passages are still there, machined and everything. Swap the plate for the valve and the PCM will never know the difference.

You may want to keep the PCM with the engine as well, if the connectors are the same. The extra compression may have been accompanied by minor changes to the spark tables, but there's so much margin for error (as tuned from the factory) that honestly I wouldn't worry about it, just wanted to mention it. Probably talking about less than a degree. If you would happen to get any spark knock from it, the SES light will come on with a P0300 code

[goser]

Good info and advice, thanks!