P1117 - can't clear code

[Zzorro]

I got it.



Now to install the new sensors. I opted to buy Bosch 15738 units. These are the OEM sensors with a DIY connection to use the original connectors. The Bosch connection system is pretty slick so I think it will work.



So main question: does it matter how long the wire leads are? The existing O2 sensor leads are about 6" long. Seems to me that a little extra wire wouldn't do any real harm right? Can just coil up the extra?

[blue62]

Originally Posted by Zzorro

I got it.



Now to install the new sensors. I opted to buy Bosch 15738 units. These are the OEM sensors with a DIY connection to use the original connectors. The Bosch connection system is pretty slick so I think it will work.



So main question: does it matter how long the wire leads are? The existing O2 sensor leads are about 6" long. Seems to me that a little extra wire wouldn't do any real harm right? Can just coil up the extra?

I don't see what it could hurt as long as you don't kink it.

[Zzorro]

All sensors swapped. Plugged in the durametric and ran car for 5 mins to confirm they were all sending signals. They were. Then shut down for the night. Will run thru paces tomorrow and post up results.

Wondering if there is a run-in period for O2 sensors. Assume I got to get them good and hot etc. Read someone say that it take some time for the ECU to adjust the fuel mapping etc for new sensors. One post talked about disconnecting and reconnecting the battery or something. Didnt sound right to me.

Anyways. Thanks all for the advice and Blue62 for guidance. Look forward to posting up results.

[blue62]

Originally Posted by Zzorro

All sensors swapped. Plugged in the durametric and ran car for 5 mins to confirm they were all sending signals. They were. Then shut down for the night. Will run thru paces tomorrow and post up results.

Wondering if there is a run-in period for O2 sensors. Assume I got to get them good and hot etc. Read someone say that it take some time for the ECU to adjust the fuel mapping etc for new sensors. One post talked about disconnecting and reconnecting the battery or something. Didnt sound right to me.

Anyways. Thanks all for the advice and Blue62 for guidance. Look forward to posting up results.

There is no run in period needed for the O2sensors
I would take it for a good cruise, 20-30 minutes should be enough time for the DME/ECU to readjust fueling to the new sensors. No need to disconnect and reconnect the battery.
Make sure you clear all your codes first.
Looking forward to your follow up post. Expecting good results

[Zzorro]

Success I think. Ran it for 40 mins in town this evening with durametric plugged in to monitor. No CEL or codes. Seems like the O2 sensors are doing their thing.

The car feels different somehow. The noticeable feeling of increased power at 3500 rpm onwards has smoothed out. So I think that means that I should have a bit more at the lower end? Anyways. Need to drive it a bit more to see what else is different. I think it's going to take a while to get the ECU to figure itself out as well, so more fun KMs ahead!

Here is a snapshot of the graph after the drive (warm engine) at idle.