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ls1nova71 · 10-05-2021, 05:29 PM

Not really going to be an 'easy' way to hook up your original mechanical temp gauge. But if you have a way to read codes, you should be able to see what the PCM is seeing for temperature. I would go by that.

10-05-2021, 05:29 PM	#5
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: idles fine then throws code P1258 Not really going to be an 'easy' way to hook up your original mechanical temp gauge. But if you have a way to read codes, you should be able to see what the PCM is seeing for temperature. I would go by that. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html