I am a newbie so please dont flame me.
My son purchased a 1998 Z24 2.4ltr. It had a hole in the block so we purchased a used engine. I just finished up swapping the engines and am having some issues.
When i start the car it goes straight to 3-4k rpm. I have swapped the AIC, EGR, TPS. Nothing changes the rpm's. I have pulled the AIC to examine the pintle, it appears to be coming out all the way (.633) @5/8inch. If I unplug the AIC the rpm's increase to @5k. I have plugged the AIC port with a dowel and tape to ensure a good seal. No change. I have fabricated a shim plate for the EGR to check if I was leaking past. No change. The only thing I have recently discovered is that if I unplug the pressure sensor (+5v reference, out, and ground) from the throttle body the rpm's do drop to @900-1000 rpm's. But it runs like a$$, almost like it is missing real bad. I'm going to exchange the throttle body and change plugs after i get off work. Any other suggestions. I really need some help.

Thanks in advance-
Chris

Repost this in Performance, You will get a muc better response

check vac lines maybe. im not to sure on this motor

Thanks all for the replies and the suggestions. I ended up swapping the intake,throttle body, injectors, and EGR tube. One of them was faulty. my guess is with the intake. Thanks again.