O2 sensor failure symptoms
#16
Addict
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member
Dear Horst,
For the G50/03 and G50/05 C2 gearboxes as compared to the G64/00 C4 gearbox the differences are in 2nd and 3rd.
2.059:1 G50/03&05 2nd gear
1.407:1 G50/03&05 3rd gear
2.118:1 G64/00 2nd gear
1.444:1 G64/00 3rd gear
The G50/04 and G50/10 and the G64/01 gearboxes are different again.
Final drive ratio is always 3.444 regardless of gearbox
Ciao,
Adrian
911C4
For the G50/03 and G50/05 C2 gearboxes as compared to the G64/00 C4 gearbox the differences are in 2nd and 3rd.
2.059:1 G50/03&05 2nd gear
1.407:1 G50/03&05 3rd gear
2.118:1 G64/00 2nd gear
1.444:1 G64/00 3rd gear
The G50/04 and G50/10 and the G64/01 gearboxes are different again.
Final drive ratio is always 3.444 regardless of gearbox
Ciao,
Adrian
911C4
#17
964 hesitation once engine is hot, 02 problem.
I have a new track toy, a82 tub with 964 motor.
Once the car is run about 8 minutes on the track it has a big hesitation issues around 4,200-4,800 RPM, I changed both coils, distributor caps and rotor, tested dme and installed new custom Steve wong chip, and new mass air flow sensor, none of which helped. After reading this it sound like it could be 02 sensor.
Could I unplug for a session to test it? Should I spend 130$ to replace
Once the car is run about 8 minutes on the track it has a big hesitation issues around 4,200-4,800 RPM, I changed both coils, distributor caps and rotor, tested dme and installed new custom Steve wong chip, and new mass air flow sensor, none of which helped. After reading this it sound like it could be 02 sensor.
Could I unplug for a session to test it? Should I spend 130$ to replace
#20
I can confirm the symptoms of a failed/failing O2 sensor. I was in the process of getting mine out to swap over into a decatted exhaust section (noted the comments about reduction in bhp as I'm going to use a stripped out cat) but due to a bad thread on the sensor ended up putting it back.
Clearly I damaged it, albeit it looked well worn, car started up fine until it warmed up about half a mile from home. Erratic idle, rough running, no power and cutting out. Fortunately I was able to limp home
Clearly I damaged it, albeit it looked well worn, car started up fine until it warmed up about half a mile from home. Erratic idle, rough running, no power and cutting out. Fortunately I was able to limp home