Qwikrex

Ok I have an Autometer A/F guage on my car and lately it has been giving some very erratic readings. Sometimes it will read lights all over the guage and sometimes it will cycle only between lean and stoich or only in lean when just cruising. It seems like the guage is working imporperly. Are Autometer A/F guages known to do this? I mean my A/F guage was working pretty well until a couple weeks ago when it started givng erratic readings. Could it be my motor that is messed up and the autometer guage is giving a proper reading?

vtec69

In my opinion its the guage
Autometer guages suck except for there tachs

Qwikrex

Also when I go WOT sometimes the guage will display rich, sometimes in stoich, and on rare occasions it will just stay in lean. I seriously think my guage is malfunctioning. Either that or my o2 sensor. Also, you think it could be because I have a test pipe and the reading from the secondary o2 is messing with the reading form the primary o2 sensor?

DragII

your gauge is perfectly normal. that is how it is supposed to read.

maxim

My gauge jumps back and forth from lean to rich all the time, but if you take the throttle past 40% it will display more consistent readings. I believe the reason for this is, that the engine does not pump consistent amounts of fuel into the engine at idle or at low throttle, therefore you get a lean condition immediatly after a rich one.

DragII

it's mainly because honda doesn't use a wideband o2 sensor, so the only time you get a constant reading is when you are REALLY far on one side of the scale.