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  View original topic: On the road. 84 02 sensor thread size?
AZ_CreamPuff Mon Oct 09, 2017 1:12 pm

Anyone off hand know what the thread size is on an O2 sensor. Have the newer cat with locations for 2 02 senors. Luckily the O2 sensor is there but the cap for the second location fell off. FLAPS is looking for 02 sensor but looking for the tread size so if no sensor us found I can plug a bolt it. Thanks.

Ahwahnee Mon Oct 09, 2017 2:02 pm

My Magic 8-Ball says M18 x 1.5

I have seen them plugged with a spark plug though I think it was a larger plug than we have on the vans (those are 14mm as I recall). An 18mm spark plug may be easier to source on the road than an 18mm bolt.

AZ_CreamPuff Mon Oct 09, 2017 3:33 pm

Awesomeness. That's what my internet sluething told me as well. Headed back into town tomorrow where they have a Napa. Have to deal with a noiser than normal van until then. Any harm running it ~60 miles without anything in place? Downstream of the O2 so I "think" I'm good. Thanks for the reply, I owe you a beer

DanHoug Mon Oct 09, 2017 4:28 pm

if you swing by any exhaust shop or garage i'd bet they'd give you a bad O2 sensor. lots use that same thread.

-dan



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