Check engine light indicates bad gas cap or pressure sensor bad. Changed gas cap with Pontiac factory and still get check engine light. Any experience with faulty pressure sensor and how involved is it to replace. Thanks. Dan in Montana

Forgot, I cleaned the MAF

Hey Guys,The saga of the oxygen sensors and CEL goes on.Here is a summery of the last couple of months.03 Vibe Base, 1.8, automatic1.CEL on, PL 171, sensors slow on scope2.Replaces sensors (Bosch) CEL off for a weeks or so3.CEL back on, no code both sensors dead4.Replaced intake manifold, old one lo...

My neighborhood mech has a friend at Pontiac who told him they have replaced a lot of intake manifolds gaskets on the Vibe. I'm going to replace the gasket. And order in the 02 sensors. Let you know what happens.

Thanks

Thanks, I haven't picked them up at the Pontiac but they did have to order them in. Went to the Toyota parts site. It asks w or w/o xrs. Can you tell me what xrs stands for? Thanks Dan

Thanks, I'll check for the leak next. Toyota said they couldn't find the part number for the Vibe sensor. The can't cross reference the the GM part number of the sensors from Pontiac. The only way was to give them the original number off the original Vibe sensor. Unfortunatly I threw them out when I...

I found the Bosch sensors for $75 and $110 but they didn't last and most folks say go with the original equipment so Pontiac get $230 each.

Thanks for the infor on the gasket problem. Can you find out what codes they were getting to tell them to replace the gasket?Also any problems with intake manefold cracking which could cause the same problem?The only code I get is po171. I don't want to burn up the new sensors at $230 each but the g...

Not sure if they were working correctly. Car ran with the cel off for a week or so after we installed the Bosch sensors. Then it came on for a few days and then went off for a few days and has been on now for a couple of weeks. Took it back to my buddy who has a scope and it showed both sensors at 0...

Thanks for the suggestion original equipment. the code we get is po171. Both sensors are registering 0 performance.

03 1.8, auto Vibe. Any ideas why two new Bosch O2 sensors type 1 and 2 only lasted a week. The check engine light wasout for about a week then came on. Put the car on a scope and it showed both sensors flatlined. Thanks Dan

Howdy from Montana,Go an 03 Vibe 1.8, auto with 120,000 miles. Check engine light came on code read oxgyen sensors were slow, replaced them with Bosch. Light was out for a few days then came on again. Put on computer and it said the oxgyen sensors were both dead. Thought of replacing with factory br...