HT...

Car is running fine and everything is normal, i go into KFC to eat with some friends.
I come back out and start my car and my AF gauge is wayy wack, i know its not accurate without a wideband, but it dosent look like this..

I made a quick picture of what it looks like in photoshop,

You guys know how the normal AF gauge is, it dances around, well mine used to.. it is now split in like 2 and locked.. doesnt move???



any suggestions on wtf is going on?
thanks


EDIT: ok it now doesnt work at all.. ideas?

Modified by athoughts at 12:23 AM 4/20/2005


Modified by athoughts at 5:48 PM 4/21/2005

 

 

wtf mate.... you traced the wires down to the o2 to see if anything came loose? Possibly shorted? Wow thats wierd as hell...

 

probably shitty install work to get cool parts in your car, that seems to be the case with mose electrical failures.

 

i would check all the wiring before anything

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 137 &raquo;</TD></TR><TR><TD CLASS="quote">probably shitty install work to get cool parts in your car, that seems to be the case with mose electrical failures. </TD></TR></TABLE>

could be the case but its been a year with no problems, and one wack night

so pretty sure thats not the case

 

Same thing happened to my Autometer A/F gauge, junk it and get a wideband.

 

that gague offers you NO real information.

 

If it uses the LM3916, which just about all of these narrowband a/f gauges use, then the chip is probably bad.

All the thing does it take a voltage (0-1v in the case of the O2 sensor) and light up the LED's - so if more than one light is lit up (and its in dot display), then the chip is probably bad.

 

well during my drive to school today, it randomly started working again, who knows whats up with it,
thanks

 

ok now its stop working again

 

Maybe it's time for a new oxygen sensor?

Maybe the sensor is shorting?

Why don't you measure the voltage you get at the sensor and then at the gauge and see if there's any difference between the two and if they're within the spec...

could also be a bad gauge but i would first check your O2 sensor...

 

alright, so its raining tonight here in san diego, and its been about 2 weeks with a working AF gauge.

Its now stoped working again, ramdomly shut off. ..

 

Those things give a general idea on AF.

If it gets bouncy its usually during idle or part throttle.

 

its either a loose connection or your o2 censor went bad !

 

if the o2 went bad he should be getting a CEL
make sure it's connected properly, so what it's been a year working, it aint now, so check it

 

Sounds like some kind of electrical short...

Put up with it for a few months, Autometer is coming out with a gauge type wideband that sould be in the $300 range.

 

lol !!!!

 

I've heard that O2 sensors don't ALWAYS give you a CEL. Borrow a known working one from a friend and see what happens...