ramello

iTrader: (1)

ok so once again another emissions removal question thread........
but the mere fact is there really is no "how to" thread for this
yes there are threads which talk about it but nothing that gives u a step by step or whatever they just say what you can remove andbasically say "put a block off plate on it"

so my question is do i need to remove the UIM in order to remove the EGR and the Cold Start seems to be goin to that area as well so same for that
also the vacume (spelling?) lines that came off the ACV do they get removed? or just capped off...havnt figured out where the other end goes to yet....

and finally since the boost pressure sensor was tied into the ACV what do i do with the vac hose that i disconnected from it? i saw a diagram where it looked like it was tied in to the BOV line, do i just tee into it??

Icemark

you didn't say what model you are removing the emissions from. Access to the EGR (and if there is even one) is entirly dependent on what year and motor you have.

ramello

iTrader: (1)

its an 87 Turbo 2.....
got it all done i believe except for now capping off the vac lines that were connected to the ACV and cold start assist
connecting that lil coolant line under the intake manifold is a bitch

so if the boost pressure sensor doesnt tie into the ACV where does the vac line coming from it go to???

Icemark

and without cold start assist, you do know that you will have to hold the throttle open to keep the car from stalling when cold???

well, the EGR on a 87 Turbo is on the back side of the intake manifold, so no ou don't need to remove the manifold to access it.

Phantomhp

Just curious but my cold start isn't hooked up at all and my car has no problems in the cold. I didn't do the full emissions removal. Just the ACV and the Split air valve.

Not questioning you by any means cause you have helped me out on many occasions just curious as to why mine doesn't.

Also here is a how to on an s4 emissions removal

http://www.rotaryresurrection.com/ro...emisremov.html

Mike

Icemark

He is talking about the cold assit on the throttle plates, not the sub-zero start/assit.

The cold start assit holds the throttle open at 1200 RPM when starting, and slowly lowers that to the normal 700 rpm when the engine is warm. Without that system, the car starts and runs at normal warm operating temp idle, regardless of if the engine is warm or not. That often leads to stalling and other issues in colder climates. He is claiming he is in Albany NY, a place with considerably colder winters and weather than Texas.

While the sub-zero system (which should be removed from all FCs- see the TSB) which injects coolant into the intake from a seperate reserve.

HAILERS

The last time I looked at the three 87 turboII engines I own, the boost sensors vacuum comes off the nipple on the ACV. That nipple is just a path thru the ACV from the intake tract, but the nipple is a part of the ACV. I can supply jpgs of an ACV if needed.

A sensible thing to do is when you remove the ACV and install a blockoff plate, have a nipple screwed into your new blockoff plate to substitute for the one on the ACV. There are other methods for supplying the boost sensor vacuum, but this is the BEST.

Phantomhp

Oh ok, gotcha.

I totally forgot about the cold assist on the throttle plates. Yeah, my kind of cold is 50-60 degrees and this years hasn't even hit that a handful of time.

Mike

ramello

iTrader: (1)

actually i was talking about sub-zero assit.......didnt know there was also a cold start assist
which i ended up answering my own question and taking the UIM off since to remove the subzero i had to and it made it a lot easier to get to the EGR anyways

either way this is only a summer car not a daily driver.......so wouldnt matter

but i still have a question on the boost presure sensor......because i know for sure that i disconnected the vac line from the ACV
now the blow off valve goes to a nipple which is just on the UIM below the BAC
but the pressure sensor defnitly went to the ACV so how should i tie it back in???

ramello

iTrader: (1)

so nobody knows where the vac line for the pressure sensor ties in to??

NZConvertible

The MAP sensor is fed from a nipple in the ACV. The passage goes right through the AVC into the manifold. It's the one at the top above the switching valve.

You can tee it into the BOV line, but make sure the restrictor pill in the MAP sensor line is after the tee so it doesn't effect the BOV. Alternately you can fit a brass nipple to the block-off plate like I did.

ramello

iTrader: (1)

well the block off is already installed so a nipple in the plate is out of the question

what do u mean by "make sure the restrictor pill is after the tee"???
can i just tee it off right around the area where you see in the picture cuz that line on the left is what i have coming from the BOV

NZConvertible

Not it's not. My MAP sensor was teed of the BOV line for two years before I removed the block-off plate and fitted a nipple. The whole job took less than an hour from memory.

The MAP sensor line has a restrictor pill in it at the manifold end. You can tee into the BOV line anywhere, but make sure the MAP sensor still has the restrictor its line and that this restrictor only effects the MAP sensor vac signal, not the BOV.