99 gp gt

[rairigh915]

99 gp gt 3800. My scanner keeps reading codes po133(o2 circuit slow response bank 1 sensor 1) and p1133(HO2s/O2S insufficient switching sensor 1 bank 1).I just changed both 02 sensors and EGR. Could MAF cause these codes also? Or did I possibly get a bum Bosch O2 sensor?

[Will Help]

Might check for possible wiring problem before you start swaping parts.

[rairigh915]

O2 sensor wiring?

[richtazz]

I assume you reset the codes after installing the new sensors? If you did, then strike up another junk Bosch oxygen sensor.

[OJ_]

Exhaust leaks will also generate both of the codes, make sure the sensor is screwed all the way in and tight. I would also try swapping it out as well.

[tblake]

Originally Posted by richtazz

I assume you reset the codes after installing the new sensors? If you did, then strike up another junk Bosch oxygen sensor.

AH HA HA HA HA HA HA

[BNaylor]

Originally Posted by richtazz

If you did, then strike up another junk Bosch oxygen sensor.

QTF!!!!!

"Quoted for truth"

Stick with the AC Delco or Denso brands only.

[tblake]

denso? never heard of them, they make 02 sensors too?

[BNaylor]

Originally Posted by tblake

denso? never heard of them, they make 02 sensors too?

Japanese up there with NGK as far as quality and performance. A lot of L67 and L36 owners use them. I use the Denso in my GTP and AC Delco in the others. I think the W Body Store still has them available for around $60.00.

[tblake]

Good to know....