egesteban

Yeah, I'm going to have dinner right now and go drive it afterwards to see if the monitor clears. How long do you think it'll take for me to know if it cleared or not?

I flipped it every which way and it still blows straight through on every port it has. Shouldn't it be similar to a PCV valve, where it only allows fresh air in, but doesn't let any air/vapors out? (not saying the PCV lets fresh air in lol just comparing it to how it might work.

Also, I came across this link: http://www.ej9.ru/civic/book/chpt_33.pdf

Go to page 18 of the PDF document where it tells you how to go about P1457, and my test passed and according to the manual nothing is wrong with my evap system. lol

egesteban

Engine type B18B1 (originally D16y8)
coupe
EX
manual
California Emissions

ezone

WOW! You found something Grant put up...I didn't think there was hardly anything left, he shut down the site years ago. Smart guy, made up some good, useable info. http://www.tech2tech.net/

It was a guess, and I hate to guess without knowing....

But I figure it isn't part of the problem based on how it's connected to the CVS.


Damn, I forgot about the swap...
Looking back at earlier posts...
Have you figured out if purge (PCS) actually gets switched on by the PCM?
Does this use the original PCM, or one for the B18 engine?
Have you compared pinout diagrams for each to make sure the PCS terminal in the harness matches the PCM? (I can't get Acura info from Hondas site)
Same for the rest of the EVAP system parts?
(A good scanner with bidirectional controls could quickly tell you if it's wired right, each solenoid should click when activated through the scanner)


That was a bulletin info repost. I erased it from a different post after blabbing on about the 56 instead of the 57 code.

egesteban

I capped one of the three ports on the valve in the manner of letting it only suck air, not blow out. Weeeeeelllllllll..... The evap monitor cleared!!!!!!!

My GUESS is that the valve is bad and is only supposed to allow air in, and not out. I will go to pick-n-pull this coming week and grab a handful and compare them.

It uses a different PCM, P75 ecu.
Yes the wiring is identical with the acura and the honda.
And yes, the same evap parts are used also.

ezone

Monitor may have ran, but is there a pending code set? EVAP is a 2 trip monitor, needs 2 failed test sessions to turn the light on.

I figured the rattling was a plain check ball, but maybe it's supposed to be under spring pressure to close a passage. I can't tell much from where I sit.
Seems like most of the rest of the cars just have the CVS vent to atmosphere, no 3-way valve.


Update if you get this solved please.

egesteban

The monitor is in ready mode, green light on scanner. Before, the monitor would never clear, it would stay "pending" and the light would eventually pop up. And there is no pending code either.

Yes I looked in there with a flash light and I see a spring that appears to be out of it's 'seat' like popped off. Hence the ability to blow air through all directions.

And ill be sure to update the thread. This week I will be taking the car in to State Ref to get the motor legalized for the car and smog. I'll update then.

egesteban

Update:

I had the car sitting for a while and it needed the battery replaced. So I did and my worst fear came true.. The monitor didn't clear and I got P1457 again. I tried manually cycling the valve on the intake manifold during the second drive cycle and the monitor cleared cleared but the code popped up as soon as that happened.

I am out of ideas now. Any idea as Ezone?

ezone

So it cleared the monitor because the monitor ran, but the test failed and set the code.


And you still can't get the purge valve to run normally....
I think it's time to use a scantool with bi-directional control, see if the computer is able to operate the purge solenoid when commanded.

If it can, then make the system perform its self test (using the scantool) for the EVAP system.
If it can't, then figure out why.

egesteban

Ok back again with this problem, the car has been parked for months and today I I drove it with my scanner and ran Mode 6 testing. Here are the results.

ezone

More Secret Decoder Ring stuff?

egesteban

Unfortunately lol