Ok SO Im getting ready to install my catchcan the RIGHT way. After I sealed the OEM pcv hold with a freezer cap I went to check the 2 14mm caps i need to open for the can..

The right hex key plug is there but the one to the left appears to have a sensor in it? Even more surious is that this sensor wasnt connected to anything.

Can someone verify that this is the pcv hole that usually has a 14mm hex key cap? What the hell is that sensor it in there? Can I just remove it and replce it with the honda pcv fittings....?

UPDATE:

Black = 1pin
Green = 2pin




Modified by turbotime at 6:26 AM 11/9/2005

 

what motor ?

 

b17a1 | 92-93 GSR

 

which sensor are you talking about? the black one, green one, or metal one?

i can check my helms for you(90-93 Integra).

 

black is the knock sensor i think, the metal is the oil feed line for the turbo..

The green one is the mystery plug...

 

looks like the same extra oil sensor thats on 90-91 B18A1

 

extra? Its screwed into a pcv port right? In this pic deom dashers thread he lists both the left and right ports as PCV ports...?

see top left hex plug*

 

my b18a1 had that same green sensor and I always thought it was a coolant temp sensor for the thermostat and fan to turn on because it doesnt have a sensor over where it normally is by radiator hose...so I just hard wired my fan on

on the 0bd2 b20z I have now i think it has the same green plug sensor and now that I think of it i remember reading somewhere that its the knock sensor, but I dont need it because im running a LS ecu.....I dont know but im confused now

 

bump

yeah i think the black is knock cause im not using that either cause im running a p28 ecu.

Anyone know? I want to setup my catchcan but if that isnt a PCV port i dont want to use it as one... HELP!

 

I think it's the knock sensor. Even if it's not, it has nothing to do with your PCV system.

 

the hole its on is supposed to be used for pcv evac right? like here:

see how there is a nipple fitting in the hole where i currently have the ??? sensor...


can i just remove the whole sensor and put the fitting in? Also if thats knock then whats the blakc plug?

AHHH

 

its a fan switch for da tegs

its not a knock...lol

 

the black plug is a fan switch? and the other is knock?

I thought the fan switch (ECT) was in the tstat housing...? cause my fans work fine without either the black or green plugs connected...

 

green is fan...........are u running a da integra?


black is knock

 

im running a p28 ecu (civic ex) with hondata...

If thats the fan switch than how are my fans working without it? So does coolant run through that hole then?!

 

p28 uses coolent temp , dont hold my to this this is for a da integra, no inside that hole is the crankcase, alot of people vent in there,,,,,

 

so p28 just uses coolant temp for the fans and the OEM temp sensor in the guage cluster?

thanks!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">so p28 just uses coolant temp for the fans and the OEM temp sensor in the guage cluster?

thanks!</TD></TR></TABLE>

all honda ecus use coolant temp for fan operation, but the temp sender for the temp gauge isnt used for any of that.. its used simply to operate the temp gauge. on obd0 cars, the fan temp switch is located on the back of the block and is a two wire "female banana plug" terminal, while on obd1+ cars, the fan switch is located on the thermostat housing and is a brown two prong plug much like the IAT and EACV plugs

 

ok yeah, this must be the fan switch then:

So can i remove that entire obd0 switch? I mean coolant doesnt flow through that port right, its just a hole to the crankcase?

 

Coolant does run through that port, just use the spot that is meant for the PCV system. You know, the hole under the part bag in the pic you posted. Just below the plug you have the allen wrench in. BTW that plug also goes to the water jacket..

 

Green is knock sensor...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaFanatic708 &raquo;</TD></TR><TR><TD CLASS="quote">Coolant does run through that port, just use the spot that is meant for the PCV system. You know, the hole under the part bag in the pic you posted. Just below the plug you have the allen wrench in. BTW that plug also goes to the water jacket..</TD></TR></TABLE>


I dont understand, in dashers thread he said both those ports go to the Crackcase, your saying they go to the water jacket?!

im referencing this thread:
https://honda-tech.com/zero...age=1

did they make some drastic design change between obd0 and obd1?!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by duggy &raquo;</TD></TR><TR><TD CLASS="quote">Green is knock sensor...</TD></TR></TABLE>

If green is knock, what is black (top left)??

Sorry, im getting contradictory answers here

 

bump for someone who knows what theyre talking about

 

update

black = 1pin
green = 2pin

 

The Mystery is SOLVED! I had to break the platic to get it off but it appears to be some type of oil temp sensor!!

So 91civicDXdude was the only one who was close good work