u lose

iTrader: (10)

well my car decided to do some very light surging under light throttle. then i got the p0131 code for low voltage bank 1 sensor 1. i just put the bosch 13111 sensors in about 2k miles ago. when the SES code came on the car smoothed out. i pulled both the o2s in case the wires were grounding out. the drivers o2 was blacker than black. so i replaced them both and ran the as far as i could from anything that would ground it or melt them.

i cleared the code and drove it 2 times putting on 15.9 miles so far. it still feels like it may be surging a little but no SES light. the only thing different in the last couple days is it been very hot and humid.


mods are : hooker LTs, TSP ORY, hooker catback, MTI lid, comp 918s, msd wires, some volt booster thing, spec 4f clutch....no a/c no emissions..... the tune was a crappy street tune. seems to be running very rich. the rear o2's were tuned out.

now i'm doing a cam install next week and will be getting it completely tuned... but why would i be running low volts? i have a rock solid idle. the surging is sooo light under very light throttle passangers don't notice it. it was noticeable before i replaced the o2's but i feel like its still there...

any ideas would be appreciated

staringback05

iTrader: (8)

dont think about it as a voltage problem....seeing as its burnt and being ran rich, you might want to check into a exhaust leak issue

u lose

iTrader: (10)

hmm. i'll look at that but how would that cause low volts???

Quickin

You need a new 02 sensor, and Bosch are GARBAGE. Get the sensors from the dealer for $110.00 or go to www.rockauto.com and get them for $75.00.

Eurospec2

iTrader: (2)

Interesting, My experience tells me the exact opposite, never had a problem with the Bosch's