How to remove charcoal canister and not get CEL?

[MaxD]

Daverb,
I have pretty much followed the same course as you with the smog pump. Bought the cover plates, disassembled what I could to install them, then punted to a later time when I might be taking the intake manifold off. I've run with the pump hose blocked for some time. I get an intermittent CEL on starts when its cold (< 50F) and just clear it with the Durametric tool when I get around to it. Shouldn't apply to you since I assume you have the ROW tune.

I will concur with Laurie that you don't need any of the fans. We both live in much hotter climes than the UK (Texas and Utah) and as long as the car is moving you are fine. If you get stuck on grid for an extended period just shut it down.

Max

[Daverb]

Thanks MaxD and Jittsl

I will remove the bay fan.

Max - I have decided to park it for such times as engine is out or manifold is off too. So you have just blocked the hose off that runs under the manifold? I was thinking a breather but if you have blocked it off I will do this.

[Jittsl]

I did try to wake up Brad but I guess he's busy.

[Daniel R]

To revive an old thread, I would just like to share my results from removing the charcoal canister.

I was getting a LOT of vacuum in the fuel tank, it would take 5 or 6 seconds after opening the gas cap when refuelling to equalise the pressure to that of the atmosphere. I was also experiencing the car revving itself at idle, particularly when warm.

Anyway, I removed the canister more or less as described in this thread. No more vacuum in the tank, the car still revs itself a little, although it is definitely at least 80% better than it was. Best of all, no CEL! I did leave the valve at the top of the fuel-filler tube in-situ, although none of the tubes are plugged into it.