I had been noticing rather poor idles lately, and about a week ago I finally ended up with a CEL at idle. Magical number 1222. My initial thoughts were the ICV.
So I checked the bentley and it told me how to check the ICV:
A) ~40 ohms between the outer terminals. OK
B) ~20 ohms between the center terminal and either outer. OK
C) With ignition on, the cylinder should be roughly half open. Not OK. Mine is always fully closed (but it is possible to move it by hand, ie, it's not stuck/siezed).
So I just got a used one in the mail today, which was apparently working great. It checks out the exact same as my original one. I thought I'd give it a shot anyways, but I still eventually got the CEL.
So am I to assume that it really is my ICV that's giving me issues? Or is there something else to check? I've searched all of the other threads about this CEL number, and my other options appear to be the AFM or just a vacuum leak.
Now my other big concern... These AFMs. I guess the idea behind these is that they have to have a continuously varying resistance vs. flap angle.
I've personally owned about 7 of these and they all appear to have the exact same "resistance curve" as I'd like to call it. I've got my multimeter on terminals #7 and 12. As I open the flap, my resistance: Increases, then dips a bit, increases some more, dips again, increases again, and then drops off (at fully open).
Now I don't know if this is coincidence that ALL of them act this way, or if that is how they are supposed to be. I'd like to find someone with an AFM that works perfectly, but there's not too many people in this area.
And I can't find any obvious vacuum leaks. All of my boots and hoses are like new, and all gaskets related to the head and intake are about a year old.
:stupid:
So I checked the bentley and it told me how to check the ICV:
A) ~40 ohms between the outer terminals. OK
B) ~20 ohms between the center terminal and either outer. OK
C) With ignition on, the cylinder should be roughly half open. Not OK. Mine is always fully closed (but it is possible to move it by hand, ie, it's not stuck/siezed).
So I just got a used one in the mail today, which was apparently working great. It checks out the exact same as my original one. I thought I'd give it a shot anyways, but I still eventually got the CEL.
So am I to assume that it really is my ICV that's giving me issues? Or is there something else to check? I've searched all of the other threads about this CEL number, and my other options appear to be the AFM or just a vacuum leak.
Now my other big concern... These AFMs. I guess the idea behind these is that they have to have a continuously varying resistance vs. flap angle.
I've personally owned about 7 of these and they all appear to have the exact same "resistance curve" as I'd like to call it. I've got my multimeter on terminals #7 and 12. As I open the flap, my resistance: Increases, then dips a bit, increases some more, dips again, increases again, and then drops off (at fully open).
Now I don't know if this is coincidence that ALL of them act this way, or if that is how they are supposed to be. I'd like to find someone with an AFM that works perfectly, but there's not too many people in this area.
And I can't find any obvious vacuum leaks. All of my boots and hoses are like new, and all gaskets related to the head and intake are about a year old.
:stupid:
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