Can't speak directly to Lamda because I don't have it, but I'm wondering why frequency valve itself can't be removed from fuel loop. Would cap lower chamber with a bolt and run upper chamber directly to return line under pontoon. Is not permanent mod, so what could it hurt to try? Fuel mixture would probably have to be adjusted (leaned?) to compensate for inactive lower chamber. Did anyone ever measure size of O2 probe vs overall size of Y pipe? Seem to remember it restricts A LOT. Re: crazy idle -- is engine choking itself then rev'ing back up? (possible vacuum leak). Does it stumble in middle of otherwise smooth idle? (misfire, probably ignition spark). Is idle consistently smooth but varying RPM's? (problem with automatic idle system?). What exactly are symptoms? Bill Robertson #5939 (blissfully free of onboard electronics except a dying Craig in-dash stereo). >--- In dmcnews@xxxxxxxxxxxxxxx, "Adam" <acprice1@xxxx> wrote: > This weekend I tried to perform the lambda sensor removal/bypass as > explained in the DMCnews tech section in the article by Knut. Well I > hooked up the voltmeter, but the numbers constantly fluctuate and > they never stabilize enough to make any accurate adjustments. My car > has idled crazy ever since I've owned it. Could this be a bad sensor? > > Also, what exactly is the circuit operation with the lambda sensor > unhooked? The computer will recieve no signal, so what will the > frequency valve do, and with the lambda gone, is the freq valve > necessary? > > thanks, > Adam 16683