[automechanic]

connector for coolant temp sensor was loose

[automechanic]

the obd2 connector is not working

[automechanic]

you could have unplugged a ground wire some where

[automechanic]

All the brakes are new and the line are in good shape all the air is out of the system

[automechanic]

It’s been doing it for awhile like 6 months

[automechanic]

Brake fluid is full pads and shoes are good. Rear brakes are adjusted. Could it be the master cylinder

[automechanic]

That’s all good

[automechanic]

It’s called a turn signal cam autozone and o really has it. Thanks for the help got everything back together and it all works.

[automechanic]

This piece is broke what do they call it?

Attachments:

• image_2015-02-08.jpg
• image_2015-02-08-2.jpg

[automechanic]

So it’s better to downshift then and then go into your turn it sounds like you have more control that way.

[automechanic]

So it’s better to downshift then and then go into your turn it sounds like you have more control that way.

[automechanic]

Thanks

[automechanic]

Thanks

[automechanic]

There are a number of things that could be causing this p0420 catalyst efficiency code. The most common thing is the catalytic converter itself is no longer functioning properly. The other likely thing is the rear O2 (oxygen) sensor is no longer working properly. Other things could include exhaust leaks, damaged exhaust pipes, damaged O2 sensor wiring/connectors, plugged catalytic converter, etc.

The easiest thing to do first is a visual check of things. Visually inspect the exhaust system for leaks, check the catalytic converter for dents, holes, severe discoloration, and check for a rattle inside. If any of those syptoms are there, the converter likely needs replacement. Then, visually inspect the downstream O2 sensor (behind the converter). Check for broken wires, obvious faults, etc. If all that checks out, you’ll want to check the operation of the O2 sensor. To do that, you’ll need access to a scan tool or oscilliscope. Check that the waveform is pretty steady. If the reading fluctuates then the sensor is likely bad and will need to be replaced.

[automechanic]

There are a number of things that could be causing this p0420 catalyst efficiency code. The most common thing is the catalytic converter itself is no longer functioning properly. The other likely thing is the rear O2 (oxygen) sensor is no longer working properly. Other things could include exhaust leaks, damaged exhaust pipes, damaged O2 sensor wiring/connectors, plugged catalytic converter, etc.

The easiest thing to do first is a visual check of things. Visually inspect the exhaust system for leaks, check the catalytic converter for dents, holes, severe discoloration, and check for a rattle inside. If any of those syptoms are there, the converter likely needs replacement. Then, visually inspect the downstream O2 sensor (behind the converter). Check for broken wires, obvious faults, etc. If all that checks out, you’ll want to check the operation of the O2 sensor. To do that, you’ll need access to a scan tool or oscilliscope. Check that the waveform is pretty steady. If the reading fluctuates then the sensor is likely bad and will need to be replaced.

[Author]

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