Vacuum Hoses?? Need help conecting correctly - Honda Prelude Forum

lilbill97 · 02-08-2009, 04:38 PM

Had my headgasket changed a couple months ago, the hoses on the back of my intake manifold werent conected properly,(the 3 small nipples). I need to know where to coneect them so my idle can get back to normal. Heres a phone pic of how the are hooked up as of now.

I dont have a little breather on my intake so i just connected the first 2 with the same piece of hosing, but im not sure where the 3rd one conects to. And i noticed its a little fatter then the first 2.

Thanks in advance

Jason01LUDE · 02-08-2009, 05:09 PM

I hope this helps i tried to get a pic of where the third hose goes to but it didn't work out to well

lilbill97 · 02-08-2009, 05:19 PM

thanks, it gives me an idea. Is it conected anywhere on the cruise control unit? cause i took my cruise control out.

Jason01LUDE · 02-08-2009, 05:24 PM

yeah, I think so it was dark in my garage. I was taking pics blindly i would just cap it off

lilbill97 · 02-08-2009, 05:58 PM

When i cap it off the motor stalls out.

lilbill97 · 02-08-2009, 05:59 PM

and if i keep it like i have it now it makes an annoying whistle sound

RomPirate · 02-08-2009, 06:01 PM

Does this help?

Jason01LUDE · 02-08-2009, 06:08 PM

yeah buy his post it dose go to the cruse control. Maybe you should put a little filter on it. you know the little cone filters you see at the auto part store.

lilbill97 · 02-08-2009, 06:10 PM

Ok ill look into it. I havent seen a filter that small though. But thanks for your help guys. I think it conects to the evap. purge control valve. ill have to check if thats still on my car if it i took it of with the cruise control

jagass · 02-08-2009, 07:53 PM

Just remember how you took it off and i guess you will get the idea how to put it back...

lilbill97 · 02-08-2009, 08:01 PM

Im not trying to put the cruise control back in.lol

Storm_Rider · 02-09-2009, 02:04 AM

it connects to your cruise control actuator. ignoring the helms won't help.

lilbill97 · 02-09-2009, 06:11 AM

Ignoring the helms?

Storm_Rider · 02-09-2009, 03:03 PM

well i mean the answer was right there in plain black and white. the 3rd larger nipple goes to the cc actuator thing, but for some reason you still felt like it should connect to the evap. purge control valve. i'm not sure why you would think that unless you decided to ignore the helms.

Storm_Rider · 02-09-2009, 03:04 PM

or maybe you didn't know.. but if you click that small thumbnail rompirate kindly provided, it gives you a larger picture.

lilbill97 · 02-09-2009, 04:02 PM

Well sorry im not perfect. I found this diagram on google images before Rompirate
kindly provided his diagram.

This one is a lot more confusing which is why i was mislead.

TJ97SH · 02-09-2009, 04:26 PM

I just finished putting my rebuilt engine back in my car and had to figure out all of the vacuum lines as well. I have the helms service manual. There are 3 variations in the vacuum system within my book (97-99). The vacuum system depends on which engine/car you have. The 3 variations are 97(California), 98-99(US), and 97(48ST, Canada) or something similar to those. For mine, a 97US SH non Cali emissions model the 3 connections in question are as follows:

1)The first one (closest to the throttle body) goes to the intake control solenoid under the air intake filter.

2) The second one (middle) is capped off.

3) The third one (furthest from the throttle body) goes to the cruise control actuator.

Mine is exactly as described in in RomPirates Helms Manual scan in an earlier post. I would highly recommend getting a Helms and connecting these in the correct manner. Hope this helps.

***I believe the picture you posted is for a different system. From your User ID and picture of your car I take it that you have a base model '97 prelude. Your system should be like mine if it is not a California emissions model. If you look at the bottom of the picture you posted it says '93 Prelude

lilbill97 · 02-09-2009, 04:54 PM

Oh, i wasnt sure if there a difference. So where does the one closest to the throttle body go? i didnt see it clarified in rompirates diagram

TJ97SH · 02-09-2009, 06:11 PM

See #1 in my post above - or I'll just quote it for you and highlight the line you need to read.

Quote:

Originally Posted by TJ97SH

I just finished putting my rebuilt engine back in my car and had to figure out all of the vacuum lines as well. I have the helms service manual. There are 3 variations in the vacuum system within my book (97-99). The vacuum system depends on which engine/car you have. The 3 variations are 97(California), 98-99(US), and 97(48ST, Canada) or something similar to those. For mine, a 97US SH non Cali emissions model the 3 connections in question are as follows:

1)The first one (closest to the throttle body) goes to the intake control solenoid under the air intake filter.

2) The second one (middle) is capped off.

3) The third one (furthest from the throttle body) goes to the cruise control actuator.

Mine is exactly as described in in RomPirates Helms Manual scan in an earlier post. I would highly recommend getting a Helms and connecting these in the correct manner. Hope this helps.

***I believe the picture you posted is for a different system. From your User ID and picture of your car I take it that you have a base model '97 prelude. Your system should be like mine if it is not a California emissions model. If you look at the bottom of the picture you posted it says '93 Prelude

lilbill97 · 02-09-2009, 06:49 PM

Where is the "intake control solenoid"? Im not sure if im reading it wrong but wouldnt my air intake filter be the filter by the battery. The nipple closest to the tb used to be conected to a nipple on the back of my intake but my new intake doesnt have a little breather plug.