My my wonderful 97Z is cursed with EGR

I have installed the ZZP egr sim....
Good news no CEL light......
Bad news.....bad hesitation and my car generally hesitates like poo. Much like Jakes hesitation I would imagine?
NEXT
I am going to swap in a 1999 PCM ECU.
My first question is I believe 1999 had some 2.4's with EGR. How do I know what PCM to purchase, perhaps a part # or something I can reference?

Second question: I have an auto so the PCM will have to be from an auto. How many different variations of PCM's are there? How specific must I be when selecting one?
Do I just match the power train features, transmission, engine ect. ?

(Perhaps I am now paying for past wrongs in my life?)

Thanks
Justin
(Fireman)

PS. In retrospect all those past wrongs were pretty fun!!!!! ~
Thanks for the help!!!!

ya that sounds like how my car was. Sucks. EGR is the devil.

I just clear the code when i start up the car, annoying, but it runs like stock now so that is a great trade off. Plus with the CEL on, it turns on the cooling fans= cools the s/c.

My advice to u, is talk to eric- jdm4drlscav, i forget his username, the gold 4dr one. Anyways, he can get u set up on the 99 ecu swap.

It really isnt that tough. this is what i know. Get a 99 ecu, or have it reflashed to 99 specs( fine a 99 2.4l and get the vin #, it pays to know people at dealerships. CRASH, has a automatic 2.4l, take his vin #). ecu can be had from junkyard websites, i snagged one years back for 26$ shipped, but sold it to hanzenrider as i have a 96.

u have to move one pin on the wiring harness, and then add one pin/wire to the new 99-02 knock sensor and that is about it.(something like 35 - 37, i forget, 30 something) and something about the theft lock- leaving the car turned to the ON position till the light stops blinking.

also, u need to have the PIN out of your computer/99 one. and some little pin/wire end little metal things u have to pick up at a dealership.

Hanzenrider might be able to help u with the computer stuff, i sorta helped on his car, and nick- changeforabutton.
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Thanks Jake I appreciate the input. It hit OrangeZ with an Email.

I still have the physical EGR parts connected to my vehicle as the SC wont go on till March sometime. Wonder how the EGR valve works. Is it computer controlled or controlled be exhaust gas temp?

Justin

egr is stupid.
It is just there when u start up the car, the computer see's if it works. Probably something like letting warm air into your intake manifold so the car warms up faster.

I have drove 150 miles non stop and the EGR light doesnt come on, i just have the plug dangling there. Then i shut off the car and start it up again, 30 seconds later the CEL comes on, i clear it and i am on my way. <br>

Taken from my instructions 2 summers ago:

Ok, it took about an hour, and only cuz I'm a wiring harness dolt.

Steps Taken:

Jacked up the car
Took off the passenger Tire (completely unnecessary
Got under the car and found the 2 wiring harnesses behind the turnsignals.
Unscrewed the harness closest to the outside of the car
This harness is the BLUE harness. (The right one)
Took off the plastic cover to the harness
Inserted a toothpick to break the rubber seal for the pin on the harness
Inserted my 2 wires (one blue and one grey) using proper harness connectors. They go into Pin 32 (grey) and Pin 34 (blue)
Put the plastic cover back on the harness and bolted it back under the car.
Ran the wires into some new wire loom and ran it up to the block beside the tranny.

here is where things got shiatty. The Knock sensor was missing half of its connector, so I just cut it off the connector... the problem is one wire is greyish white and one is red. I assumed red meant blue on the PCM and Grey meant grey.

I soldered those connections together, taped them, and ran the loom over them...
Then I took a long ass socket and bolted the knock sensor into the free bolt above the tranny and under the powersteering pump on the block.

Done and done. I started the car and it runs fine so I didn't fugg anything up I don't think....

The benifit to this is that now I have a '98 and '99 knock sensor on my car, so when I switch my PCM from the '98 to the '99, the change should be seamless as the only change to the harness that was made was no EGR and a 2 wire knock sensor.

I will be able to unplug my EGR once the PCM Reflash is done and hide that harness, and I'll be EGR free and have the better PCM.



So - yeah that's the wiring. Go find a dealer that'll reflash it for you and find a vin # for a 1999 AUTO.

Good luck.

-Chris-
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-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...