Hello All,
Was hoping someone could take some pics of their vacuum hoses and where they should go for this setup. I have looked everywhere (seems like it) and can't believe that this is so difficult to pin down. If someone could take pictures of their working vacuum lines on the throttle body I believe it would help tons of people including myself. Thanks in advance.

 

I wish I had a camera but I dont so I'll try to describe the set up on my 92 DA obd1 the best I can.

If you are looking the tb from the front on the passenger side the large fitting on top of the tb goes to the canister, the one on the right feeds vaccum to the MAF sensor on the firewall
if you are using a stock intake the 2 fittings on the back right lower section feed vaccum to the purge solenoid and the pressure regulator valve both on the firewall.

The fuel pressure regulator valve feeds vaccum to the fuel pressure regulator on the rail, and the purge solenoid feeds vaccum to the purge solenoid valve on top of the canister.

I know it sounds very confussing but thats the best I can do for you, sorry.

 

https://honda-tech.com/zerothread/2319489

 

Can someone let me know if all the vacuum lines look OK?
I have color coded the hoses so you can see what I have going where in each photo. Please someone help. Thanks in advance





Modified by Stadler at 4:01 PM 7/10/2008

 

Hello Thanks for the link. This diagram is for a B16. Is the vacuum the same for the b18a1? The hoses that aren't there (in the diagram) do I just cap off the connectors? I can't believe this is so difficult to locate. I've searched all over the net. This is so frustrating. Someone Please help.

 

 

Thanks. I think I am missing something.....The B18A1 calls for the "Fuel Pressure Regulator Control Solenoid Valve" to be connected to the FPR. I don't see this on the CRX. What does the FPR hook up to?

 

Stadler what ur missing is the other control solenoid. The purple hose in ur pic is correct that's 4 ur map sensor. Take the hose coming of the charcoal canister and go directly to the top port of the EGR valve that's the one in the pic you have that's on the firewall and the vacuum hose underneath that (red one in ur pic) to the rear of the block (where the white hose is in ur pic.) The hose coming off of ur fuel pressure regulator route that directly to the rear of the block (it's red in ur pic next to the white hose in the same pic) that'll work until u get the other solenoid. The thick green one in ur pic I believe is correct and the thin one should go back to ur intake similiar to how u have the steel braided on off of the valve cover, that's y some intakes have two ports on the intake arm. I'm 100% sure on the solenoid hose routing but, the dashpot (green hoses) I'm not 100% sure on those. Good Luck though.

 

Thanks! I did just like you said, and now my car won't start. Almost like it isn't getting enough air. Smell Gas and my Air/Fuel gauge is all the way to Rich. Any ideas?

 

I dont even have any of the evap stuff hooked up on my b16. the only vac lines that im running is one for the map sensor and one for the feul regulator.
been like that for about six years now , dosent pass smog anyway!

 

Thanks. Where is your FPR hooked to?

 

the map sensor is hooked up at the tb and the fpr is hooked up to the back of the im. on the tb hook the map sensor up to the top port everything else gets a vac cap. of course the booster and the pvc are hooked up in the normal spots.


Modified by vtec_ef8 at 7:30 AM 6/28/2008

 

this is exactly how i have it on my rex w a b16 for 2 years...no problems with idle or cels..

 

We aren't talking about a b16 here. The b16 has a completely different vac setup from the b18a1. I'm assuming that's an obd1 b18a1, because you're missing the valve on top of the throttle body. Please correct me if I'm wrong.

Going strictly from memory, here's what I remember:
on the firewall-side of the intake manifold, cap off everything but the line that's closest to the driver's side (should be all the way toward the bottom of the plenum, toward the ground).

I'd suggest cutting/capping ALL those hard vac lines. They just gum up the works anyway, and complicate things unnecessarily.

I just emailed the person who bought my car off me, so I can hopefully get a picture of how I had set up the vac lines.

I would also cap off the valve that's on the front+center of the plenum. If memory serves me correctly, it's a waste of space and causes inconsistencies in vacuum that your MAP sensor doesn't know how to handle.

You should be able to hook this up with only three lines running to the MAP sensor (then two to the charcoal filter, and one for the PCV valve).

I'd love to be more specific in my descriptions but I'm as colorblind as you can be (red/green, blue/purple) so I'm not going to chance using the color-coding.

I'll see if I can put together a workable pinout diagram for you this weekend.

 

Man! Thanks everyone! Your help is so much appreciated. drummingpariah, A diagram would be awesome if you could find the time to do it. It would help me out so much! Thanks again

Stadler

 

I got both solenoids now. Evap purge and the FPR purge controls (BA18 Firewall). The only problem I see now is that it has two sets of wires (4 wires) now instead of just two wires. What do I hook the other green wire and black wire to?



Thanks in advance

 

I am running a b18a obd0 in my 90 crx...and I dont have Anything hooked up! None of the emissions stuff anyways. And mine runs fine, no problems.

 

Wow! Would you be willing to take a picture of your vac Lines for me? Or Maybe make a quick diagram on what to hook up and what to just cap off?
Thanks in advance for your tiime.

Stadler

 

I'm going to draw up the correct diagram for ya now (going from memory, hopefully I can remember it all )

 

man! Thank you so much!

 

like I said if you run it like me, it will run fine, no need for evap or any smog equipment.

 

Cool. Can you tell me exactly what you have hooked up? Is it just the FPR and MAP sensor?
Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec_ef8 &raquo;</TD></TR><TR><TD CLASS="quote">the map sensor is hooked up at the tb and the fpr is hooked up to the back of the im. on the tb hook the map sensor up to the top port everything else gets a vac cap. of course the booster and the pvc are hooked up in the normal spots.

hook it up just loke this and the tube coming out of the fire wall where the canister get hooked up just leave it open
Modified by vtec_ef8 at 7:30 AM 6/28/2008</TD></TR></TABLE>

 

That's pretty much what I have drawn up here. after I finished drawing it, I realized that I don't have a scanner or camera. I'm going to get it into digital form as soon as I can anyway, though. I suggest getting a whole kit of vac plugs, though. You'll need 'em.

 

It may be a little difficult to follow atm, but here ya go:
http://madnessmanual.logolesss...agram/

Let me know what I can do to clarify it (leave a comment on the post).