My 1990 obs sensor has the exact same 2 wire connector that my 2003 5.3 has. Can I just use the 5.3 sensor and have my temp guage work properly or do I need the adapter?? I ordered p/n 182-2277 adapter from speedway motors but it has a 1/8 female end and my obs sensor has very large male threads, I'd say maybe 3/8ths. Any adapter to accept my obs sensor would seem to have to be very large???? I'm stumped. Thanks.
Do like the other guy that posted yesterday, go buy a 1/8"NPT to 3/8" NPT adapter. Issue done. Use your old sensor since the resistance values in sensors change over the year models.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I just drilled and tapped the water pump.
"ALisSa1 Silverado"1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60EScrimpin Ain't Easy( . Y . )
Thanks for the input guys, but I'm still confused as my obs sensor has gigundo threads,much larger than the oil sensor.I don't know if anyone has done this but I could drill and tap the original location in the head,but the heads are already on and I don't want to botch it up. I'll check around for other adapters though. Thanks again.
You ordered the adapter for oil pressure sensor.Check out this thread he shows the adapters with part #'s http://www.ls1truck.com/forums/lsx-t...ed-swap-3.html
You have the 3/8 sensor just like me.
Silverado Z71 10" Lift COMPLETE 6.0/4L80E PRC 2.5 Ported LS6 Heads 228r Comp Cam 3200 CIRCLE D Stall LS7 Lifters ARP Bolts SLP Oil Pump and Double Timing Chain 160 T-Stat 3" SLP Loudmouth Electric Cutout Walbro 255 Pacesetter Longtubes MSD Starter NELSON Harmess NELSON Street/Strip Tuned ECM MSD Wires LS1 Throttle Body Braided Lines Spectre CAI 4.56 Gears Detroit Locker 14 bolt http://www.ls1truck.com/forums/lsx-t...wap-build.html
FYI you need the temp sensor for the 5.3 motor for the computer to work properly.That is why people use there original temp sensor in the other head port for there gauge.
I didn't know you needed the ls temp sensor I thought that was only if you were running e fans.
96 2 Door Tahoe 4wd / 5.3 Swap / CAI / Tune / Pacesetter LTs / Magnaflow / LED Dash / Novak A/C Bracket /
http://www.ls1truck.com/forums/lsx-t...ders-pics.html
Ect signal is a huge input used for fueling. Gotta have it. A temp sender is different than a temp sensor. You need a sensor for the pcm and a sender for the guages.
Street and Performance sells the exact adaptor you need. Metric to 3/8 pipe thread. Only thing that sucks is that they're polished. Yuck! Lol
Thanks Gagliano7 for the info, I didn't know that the original sensor was needed for the computer to work correctly. I'll leave the 5.3 sensor in the drivers side head and run my obs sensor or a mechanical water temp guage off the rear of the pass head. Live and learn!
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