Oxygen Sensors for 2004 Turbo

[mycar]

Upstream and downstream...Local parts store has Bosh Part #15510 that are listed for use in either. Another parts store has NKG sensors that have same part # to be used both up and downstream...do I really need different ones?

[Busted_PT]

I would go with the NKG's

[myckee]

When I look on rockauto.com it shows the same sensor used in both upstream and downstream locations on a 2004 turbo 2.4.

[NitroPT]

The HO2 sensors in the PT cruiser are the same part that is applicated for
probably hundreds of different vehicles.

I prefer Bosch first but NGK is good as well.

Generic HO2 at a lower cost will work just fine.

The important thing is to use anti-sieze on the threads. Use the proper socket to install it and don't over torque it. When your finished double check that the wires are not touching any exhaust part.

It is a good idea to disconnect the battery when replacing them and you must clear the PCM using a Diagnostic Scan Tool.

If you fail to do this the PCM may hold the last values of sensors being replaced which may cause poor running conditions and a thought that you have defective new sensors .

[mycar]

Thanks for these remarks and suggestions, I'll do this today including erasing PCM with Diagnostic Scan Tool. Fingers crossed that this is going to resolve my favorite car problems, I'll let you know outcome. Ron in San Diego

Few hours later: Fingers still crossed, new sensors installed, erased PCM, let car idle 15 minutes then drove around neighborhood with no problem or check engine light...time will tell if fixed or need something else, on the road later today. Thanks for the help here.

[mycar]

Not fixed. Just took car on 50 mile test run driving at 70/80 mph and was all fine until got about 1-1/2 miles from home. Check engine light came on, car started bucking, ABS, brake light air bag light all came on. Was able to get car home with engine quitting at stop signs, traffic lights and slow downs. Checked and now getting PO 300 code. Don't know if I should order PCM or what, friend said I should change coil pack.

[LionPT]

Originally Posted by mycar

Not fixed. Just took car on 50 mile test run driving at 70/80 mph and was all fine until got about 1-1/2 miles from home. Check engine light came on, car started bucking, ABS, brake light air bag light all came on. Was able to get car home with engine quitting at stop signs, traffic lights and slow downs. Checked and now getting PO 300 code. Don't know if I should order PCM or what, friend said I should change coil pack.

P0300: Code p0300 Common Causes and Likeliest Fixes

[NitroPT]

RON thank you very much for keeping all of us that helped you updated with your progress and results.

[mycar]

Went out again to recheck for codes and got the Po300 then 0201, 0202, 0203, 0204 0508 and 0038

While checking for rebuilt PCM told that if problem not corrected before replacing faulty PCM the new one could also be fried. Does this mean car should end up at Dealer's Shop and I need to take out second mortgage on house to cover costs?

[NitroPT]

This is generally an indication of a bad PCM.

If you follow the procedures of replacing the replacement PCM nothing will carry over except issues relative to a healthy PCM reporting them.

The most IMPORTANT safety precaution is disconnect the battery during the installation and at least attempt not to expose the un-grounded PCM to a static charge.

Try to resist doing a happy dance on your carpet with the new PCM in hand!

Oh I hope that you are using a Diagnostic can tool to access these codes...right?