dunkd

All last year it as fine. We were tuning it today and after a few pulls and checking plugs we realized something definetly wasnt right. Jdogg tuned the AFR's in the 11.5-12.5 range where it should be, but the plugs were WHITE/LEAN as hell. When he dropped it down to the 10.0 range the car made much more power and the plugs looked as they should.

I would just take it as a bad o2 sensor but the o2 sensor on the dyno was seeing similiar results in the tailpipe.

I am going to get a new sensor and hopefully it will solve the problem. The sensor that is in there is a year old but doesnt have too many miles on it...

Any idea's?


Modified by dunkd at 10:00 PM 4/10/2006

Black DC2

damn @ least urs lasted way longer than mine..
i have the AEM wideband and the o2 on that went bad after 3 days
i ran C16 though but it should of lasted longer than 3 days maybe 50 miles

D@nnY

C16 ***** up sensors...when they get old they do read wrong

I have gone through 4 sensors....I like to put a new one when I first tune the car to make sure its as fresh as possible .... and on the dyno have like 3 widebands on that thing

dunkd

it hasnt seen any c16 before today. it was getting the bad reading before we started using it...

anyway now there is 5 gallons in there so this o2 sensor will def be toast. I am going to VW to pick one up wednesday and hopefully they will have it in stock.

if this doesnt fix it then... I AM LOST.

driving around on the street the wideband reads RICH (<10.0) and in the 10's under partial... in this case the car should drive like **** and break up, but it drives smooth.

Mase

if there is any preignition or detonation going on... sometimes when u richen it up quite a bit, it will stop that from happening.

that could be what you are seeing.

however, id def check out that sensor.