B18C7 - What is this and what does it do?

[Fr3aKi3]

Hey all,

If someone could tell me what the thing circled in red is and what it does that would great! Bonus points for telling me what the hoses (the ones that are plugged in by screws) should be connected to. Cheers ;)

http://i4.photobucket.com/albums/y124/Fr3aki3/2011-07-241628291.jpg

[Sleepy.]

Cant really tell by the pic but if the thin hose with the screw starts at the top right of your intake manifold, then the end of it connects to the top of your Charcoal canister.

[ECU-MAN]

looks like it the purge solenoid for the charcoal canister

[krogoth]

could you give us a bit more background info (what car, etc)? as well as a few more pics?

[TheSaint]

could you give us a bit more background info (what car, etc)? as well as a few more pics?

+1 - need more info

i would hazard a guess that its an external purge solenoid for the charcoal canister

the charcoal canister only has a life time of about 5-10 years - so they are pretty much useless after that
its easier to just plug the lines than replace them so many people will do this

iv never seen the solenoid actually on the intake manifold tho - usually they are built into the canister

[krogoth]

i reckon this b18c7 is in a civic or something, and the engine transplant was completed without the charcoal canister?

hmmmmmmmm, dont you need the charcoal canister to be connected in order to get road worthy?

instead of plugging the line why wasnt the whole purge valve assembly just ripped out?

[mocchi]

looks like it the purge solenoid for the charcoal canister

give this man a cigar. this thing is not inside the charcoal canister. its outside, near IM. ITR '99 AUDM.

VALVE, PURGE CONTROL SOLENOID
36162-P73-A11

http://parts.sonsacura.com/images/parts/Acura/fullsize/393737.png

[krogoth]

yeh thats right, the purge valve is on the IM, the charcoal can is next to fuel tank somewhere i guess????

[mocchi]

yeh thats right, the purge valve is on the IM, the charcoal can is next to fuel tank somewhere i guess????

its under clutch master cylinder.

[krogoth]

oh **** it is?????? lmao never noticed, thanks boss

[mocchi]

Hey all,

If someone could tell me what the thing circled in red is and what it does that would great! Bonus points for telling me what the hoses (the ones that are plugged in by screws) should be connected to. Cheers ;)



http://www.obd-codes.com/p0443

The Evaporative Emissions System (EVAP) allows fumes from the gas tank to enter the engine to be burned, rather than vented into the atmosphere as an emission. The purge valve solenoid is supplied switched battery voltage. The ECM controls the valve by operating the ground circuit, opening the purge valve at specific times allowing these gasses to enter the engine. The ECM monitors the ground circuit as well, watching for faults. When the purge solenoid isn't activated, the ECM should see a high voltage on the ground circuit. When the solenoid is activated, the ECM should see the ground voltage pulled low, close to zero. If the ECM doesn't see these expected voltages, or senses an open in the circuit, this code is set.

^ no probs wazzeem.

[TheSaint]

so basically the whole thing can be removed from the engine bay because its not hooked up to anything lol

[mocchi]

so basically the whole thing can be removed from the engine bay because its not hooked up to anything lol

it depends what ecu youre using i think.

[krogoth]

the purge solenoid would have to be connected to ecu right? because it isnt just open/close is it?

it lets in fuel as its required much like an injector, so variable based on load/throttle

what would the ecu do if the purge solenoid wasnt there? would it just run the car in safe mode? or just throw an error and run normally?

[Fr3aKi3]

Thank you to all that have replied! It's a B18C7 in a em1.

I'm pretty certain that there is a charcoal canister there with all it's connections in place, that said I didn't really have a very thorough look.

[Dyln.bxtr]

Bringing an old post back to life.
I've just finished a c7 swap into my ek1 (d16y4) and am left with the purge solenoid disconnected. I have a point on my im for the hose. Two hoses on my existing charcoal cannister and another hose adapter thing coming from the valve cover.
Could anybody please tell me which of these hoses I need to keep and which ones go to the valve cover and im??

[cbauto]

pictures

[Baby Face]

i dont think the ECU actually looks for the purge solenoid. removed the one on my old b16 along with canister. and just put rubber over the open plug. purge solenoid works on its own with some power and an earth i think. the ecu doesnt send it commands as such.

JDM b18c doesnt have one apparently.

just unplug it see if u get a code. make sure if u remove it all that you go super cheap and get 3/4mm hose caps to plug the holes in manifold.
4mm is the hose size but 3mm will be much tighter and better seal.