Autometer A/F Gauge
 

yea i know its useless.

heres the uestion. I wired it up and spliced into the black wire right at the ecu. when i start the car its lean and works its way over to stoic/rich after a few minutes. if i give it some gas the gauge bounces around and does its thing. but when im crusing or idleing sometimes no lights are unless i blip the throttle. is this working right?

what makes you think that a a/f gauge is useless,it helps you determine if you are leaning out or running too rich,the gauge should bounce around when idling and jump more towards stoich. and rich depending how much throttle you are giving it,hope this helps.

the autometer is a narrowband. They are not accurate. It only should really work when under throttle..mainly WOT

i have one and it does the same thing, usually lean when at idle, then when u give it gas it goes over to the rich side. Seens to be working fine for me!

My car is running rich as hell. When I'm at idle and at WOT it reads rich at cruise it bounces lean-stoich. My builder tested it and it's actually accurate.

It useless because if you read lean when you are suppossed be rich AND you see it, it's already too late.

I basically use mine as an idication of when my car is warm enough to WOT it :cool:

Hello-

Remember, your gauge is an OXYGEN gauge, not an A/F mixture gauge.

If you are running so rich that you rich misfire (or even burn notably incompletely), you have excess oxygen in the exhaust, and it will read "lean." I'd be willing to bet that's what's happening to montego.

Take care,
Shad

this may be a stupid question (but im not up on my a/f gauges) which ones are wide band? any difference between autometer one and the defi one besides teh lights?

if you want wideband, they normally run around 400+.. inovative has one as well as aem now that are affordable.