Anyone have a part number for that 3 wire O2 sensor? Looking to change mine to heated.
Edit: never mind I saw the Op had a link.
Current: '91 1500 Suburban (3rd owner), 350 TBI, 700R4
TBI system: RV Morse Bored TB - Matched FIs - Adjust. fuel psi regulator - Injector pod spacer - RV Morse Powerplate - Hypertech "salad bowl"
Full write-up here
Follow the build here
Mine is 4 wire 2 hots 1 signial and a ground is that the one your referring to ?
ACDelco ASF-74 is a factory 3 wire O2 sensor for a 1994 S10 4.3 Liter.
https://www.ebay.com/itm/ACDelco-AFS...UyV:rk:13:pf:0
dave w
I checked my wiring again tonight and yep, no issues. So I took the sensor out and hooked it up to 12v - after about 3 minutes the tip got pretty hot. I could still very briefly touch it without getting burned. Should it get hotter and should it warm up faster, or is this expected behavior?
that is about how mine worked, before I put the 3 wire in truck would go open loop at 30 mph in 5th gear in the winter time.
Thanks for the input. I think I'll put it back in and run with it and see how it goes.
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