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wierd A/F gauge problem??

Posted: June 18th, 2005, 11:22 am
by Joey's mx
Ok when i push the brake pedal down my ari/fuel gauge goes to full rich!! What could be causing this problem??

Posted: June 18th, 2005, 7:07 pm
by Joey's mx
anybody??

Posted: June 19th, 2005, 7:20 pm
by Joey's mx
:bump:

Posted: June 20th, 2005, 9:26 pm
by Joey's mx
nobody can help me out??

Posted: June 21st, 2005, 10:56 pm
by Domnknpimp
does it work normally when the brake is no pressed?

Posted: June 22nd, 2005, 8:06 pm
by Devilhog
Take your car out to dinner and ask if she has any problems? :twisted:

Sorry no clue.

wiring

Posted: June 26th, 2005, 11:27 pm
by forcedairram
sounds to me like a wiring problem, if you hook a wire up wrong it could screw with the reading

Posted: July 5th, 2005, 12:07 am
by prototype
I just bought a A/F Gauge and it says to make sure to NOT ground out the ground wire to a ground inside the cabin of the car and to only groudn it useing an engine ground... Maybe the ground you are using has to do with something in the grounding of the brakelights?

That's abotu the blindest stab I could take, but It's worth a look. Sounds like a wireing thing to me.

Posted: July 5th, 2005, 4:24 pm
by matt_fulghum
It goes really rich, I imagine, because the brake booster runs off vacuum, so does your fuel pressure regulator. The less vacuum the FPR gets, the higher the fuel pressure.

At least, that makes sense to me, and that'd explain it, sort of.

A/F gauges are pretty much useless though, fyi.