wierd A/F gauge problem??

Joey's mx · Post by **Joey's mx** » June 18th, 2005, 11:22 am

Ok when i push the brake pedal down my ari/fuel gauge goes to full rich!! What could be causing this problem??

Joey's mx · Post by **Joey's mx** » June 18th, 2005, 7:07 pm

anybody??

Joey's mx · Post by **Joey's mx** » June 19th, 2005, 7:20 pm

Joey's mx · Post by **Joey's mx** » June 20th, 2005, 9:26 pm

nobody can help me out??

Domnknpimp · Post by **Domnknpimp** » June 21st, 2005, 10:56 pm

does it work normally when the brake is no pressed?

Devilhog · Post by **Devilhog** » June 22nd, 2005, 8:06 pm

Take your car out to dinner and ask if she has any problems?

Sorry no clue.

forcedairram · Post by **forcedairram** » June 26th, 2005, 11:27 pm

sounds to me like a wiring problem, if you hook a wire up wrong it could screw with the reading

prototype · Post by **prototype** » July 5th, 2005, 12:07 am

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.

matt_fulghum · Post by **matt_fulghum** » July 5th, 2005, 4:24 pm

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.