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1978 chevy tempature sending unit
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william kramer
New User
Dec 2, 2010, 5:18 PM
Post #1 of 6
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1978 chevy tempature sending unit
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took out a 250 cu. in. enginethat had 2 sending units on the same wire (the guage worked) put in a 350 cu.in. with one sending unit (guage does not work) . tempature guage cheks good would that specific guage need 2 in-line sending units?
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 2, 2010, 5:29 PM
Post #2 of 6
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Re: 1978 chevy tempature sending unit
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What do you mean by "2 sending units on the same wire"? That is not done.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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william kramer
New User
Dec 2, 2010, 6:03 PM
Post #3 of 6
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Re: 1978 chevy tempature sending unit
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I don't understand it either. The wire from the guage goes to the first sending unit and clips on, comes back out of the same clip and goes to the second sending unit. (on the 250) I did not put the 350 in the truck, but the mechanic that did is scratching his head too. I know the 250 was original, I bought the truck new in 1978. Hope you can help, the 350 wasn't cheep.
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Hammer Time
Ultimate Carjunky
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Dec 2, 2010, 6:07 PM
Post #4 of 6
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Re: 1978 chevy tempature sending unit
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No, nothing is intentionally wired that way. The computer can only read one sensor per circuit.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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william kramer
New User
Dec 3, 2010, 3:08 AM
Post #5 of 6
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Re: 1978 chevy tempature sending unit
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no computer on a 1978 chevy truck. what about putting another sending unit in another port and wiring the same way. maybe the guage needs a stronger ground ?
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 3, 2010, 3:24 AM
Post #6 of 6
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Re: 1978 chevy tempature sending unit
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There is no way for 2 sensors to be read or monitored on the same wire. It has to be something else or for some other purpose.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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