Thread: 98+ SR20DE vacuum removal (to 95~97 standards)

one thing you should keep in mind if you are planning to inspected with the 95-97 is I dont know if where you live they do it the same way as here in NC but when they plug the machine to your car on a 96' you are only tested for at least 2 realtime parameters on emmision sensors while the vehicle is running, 97' you are required 3 different monitors and 98'+ 4 the least. Such as
-Catalic Converter
-PCV Valve
-Unleaded gas restrictor
-EGR
-Fuel Evap control
-oxygen sensor
-gas tank cap
When they hook up the machine to a OBD2 port they start your vehicle and monitor these parameters in realtime to make sure they work properly. Also if you change he ECU it will take at least aprox 1000 miles for some of these parameters to start working ask me how I know??
I got a 98' and I turbo it for a awhile until inspection time came, trust me it suck but I learn the whole emmission system for 98'
SE-R

No, there's no sensor on the intake manifold pertaining to EVAP on the pre 98 cars. The 98 and up have that god awful looking purge control crap on top, with the three huge vacuum lines running back and forth.



96+ cars get plugged into the system, and check for MIL codes. If none exist, car is done. They don't care to check anything else, becuase it's moot. If the car doesn't have a CEL, there's nothing wrong with it

Gotta love West Texas.

gotta love the year 95 no testing in IL

They don't do the OBD scanning on a 95 and lower car, but they do the emissions test. IMO, that's worse.

X2. I am going to have my car inspected this month and I was happy to hear that all they do is the OBDII scan. It figures I live in the only county in NM that does emissions at all.

So, as long as I'm not throwing any codes I should be good. I still have all my emissions crap. I think after this inspection Im gonna register the car for 2 years and try and do what Tekkie is doing here.

any news on this tek? I'm trying to tear my manifold off tonight but i really don't know what to take off lol

Sorry bud! I had to take a few steps back and fix some other annoyances. Right now the car is in pieces again.

Are you currently running with a 95~97 ECU?

nope not running at all haha just trying to figure out what i have to remove lol im waiting on a guy to buy the manifold from. im putting everything on and waiting for calum to get back to send the ecu out to him. could you get a better pic of the lines and stuff you pulled. and do you keep the bpt valve?

Ah I got you. You're going to be running with the ECU, got it.

Okay, it's pretty easy.

First, remove the vacuum galleries from the motor, along with the EGR and BPT valve. Then, there's a 3 way solenoid that sits on the driver's side of the motor, close to the dizzy. Yank that off.

Then, there are two three way solenoids on the back of the motor, underneath the upper intake manifold. There's a brace that supports the manifold shaped like a "Y". On it, are two more three way solenoids. Yank those out, and all associated vacuum lines. Now you're left with the absolute pressure sensor on the firewall. Disconnect it and yank it, along with the vacuum line.

Now, the first solenoid you removed that was on the driver's side of the motor, had a line that went down to the EVAP module that had the two large vacuum hoses, and the EVAP service port. You could just cap off the port on that module, or you could leave it open. I'm not sure yet.

Lastly, there's the solenoid on the back of the car, closest to your evap canister, that needs to be unplugged. There are a few vacuum lines hooked up, but I haven't touched anything back there, yet.

That's as far as I have gotten. Being that I had other issues to correct while the car's apart, I opted to go ahead and take care of them while I'm under the car.

Like I said, I'll be taking better pictures, and doing a nice little write up when I'm done.