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E34 (1989 - 1995)

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  #1  
Old 06-07-2017, 07:37 AM
hans747 hans747 is offline
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Does O2 Location differ between wagons and sedans

Hi Everyone,

The other day, I ordered an AC Delco O2 sensor from Amazon -- P/N 213-1475. I know, we are goofy for Bosch around here, but this part was built in Japan and on sale for $13 with free two-day shipping. I could not say no. It is listed on many sitesas a direct fit for our cars. The sensor looks correct, and so does the connector. The only problem is that the wire is about a foot too short.

As I am shopping for another sensor, i just want to know if the wagons have the O2 sensor in a different place than the sedans? Mine is located in the inner angle of the Y right before the Cats.

Bonus question: Should I just extend the wire of this new sensor, or sell it on eBay? Turns out Amazon screwed up when they sold this to me, because it normally sells for about $90.
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  #2  
Old 06-07-2017, 10:44 AM
hans747 hans747 is offline
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Nevermind on the first question... After searching around the different parts sites, I have found that there are a lot of sensors that match the length of the O2 sensor on my car -- usually about 53 inches for the wire. It looks like the wire was longer on M50 engines, but the previous engine had a shorter wire. But for some reason, the shorter ones bubble up into the search results even in 1992 cars.

Anyway, buyer beware...

Last edited by hans747; 06-07-2017 at 11:00 AM.
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  #3  
Old 06-08-2017, 05:57 AM
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TheEinstein TheEinstein is online now
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If you're handy with a soldering iron and have the ability to properly insulate the wires, extending them should not hurt anything.
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1995 E34 540ia
160,000 Miles
VIN# ...GF32404
Hellrot Red

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My Basic Repair History (Edited 1/27/2015)

Ongoing comparison between two E34 540ia's

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  #4  
Old 06-08-2017, 07:24 AM
hans747 hans747 is offline
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Thanks, i will go that route. For $13, it's worth trying.

Since I'm already asking way too many questions... Do you think i should extend the new wire? Or splice the older (longer) wiring harness onto the new sensor?

The first option gives me two sets of connections in the line. The second option, leaves me with one one connection, but an older connector to the wiring harness.
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Old 06-09-2017, 05:54 AM
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TheEinstein TheEinstein is online now
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The way I've done it, was to cut the necessary wire and insulation sheath I needed from an old sensor, and splice that wire, somewhere towards the connector end (say 6"-8" away from connector) onto the length of the good sensor cabling. I pulled and bunched the sheath toward the sensor end and used a zip tie to keep the sheathing held back. Once my soldering and heat shrink work was done, I let the sheath go to cover up my work. Another tip, I cut all the wires approximately an inch different in length when separating the connector from the sensor. That way I didn't have a big group of splices laying next to eachother, that I had to work the sheathing over.
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1995 E34 540ia
160,000 Miles
VIN# ...GF32404
Hellrot Red

Fuelly

My Basic Repair History (Edited 1/27/2015)

Ongoing comparison between two E34 540ia's

OBC4 Hidden Functions : Link
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  #6  
Old 06-13-2017, 10:37 PM
Onizukachan Onizukachan is offline
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When I've done it I patched the sensor on the end of the original wiring, so only 1 splice.
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