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76C10Stepside · 08-07-2014, 02:58 PM

Please ignore my last post and read this one (ran out of time to edit it)! I had the DVOM set to the wrong setting. Here are the CORRECT readings for both sensors (to see if they agree), both with outside temp of 76 degrees F:

ECT sensor: 3900 ohms
GUAGE sensor: 3670 ohms

The actual readouts were 3.90 and 3.67. I did the conversion to ohms on a scientific calculator by entering the readout value (3.90), then pressing the "Exp" button followed by the "3" button.

Your list of approximate sensor resistance specs says I should get 2796 ohms at 77 degrees F: 2796 ohms @ 77 deg. F. or 25 deg. C.

I'm not sure what this means. Are BOTH sensors bad? Did I do something wrong?

08-07-2014, 02:58 PM	#15
76C10Stepside Registered User Join Date: Feb 2012 Location: Olympia, WA Posts: 300	Re: 89 S10 4.3 Need help troubleshooting TBI/IAC Idle issue Please ignore my last post and read this one (ran out of time to edit it)! I had the DVOM set to the wrong setting. Here are the CORRECT readings for both sensors (to see if they agree), both with outside temp of 76 degrees F: ECT sensor: 3900 ohms GUAGE sensor: 3670 ohms The actual readouts were 3.90 and 3.67. I did the conversion to ohms on a scientific calculator by entering the readout value (3.90), then pressing the "Exp" button followed by the "3" button. Your list of approximate sensor resistance specs says I should get 2796 ohms at 77 degrees F: 2796 ohms @ 77 deg. F. or 25 deg. C. I'm not sure what this means. Are BOTH sensors bad? Did I do something wrong?