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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


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Post by alive 75 Sun Mar 24, 2013 1:15 pm

so before i did anything i checked my oil and it was right to the full mark, i started my Monte and after a few minutes of idling my oil light came on, i turned the car off waited a few minutes and started it again, the oil light did not come on until about 30 seconds after the engine was re-started, it was running smooth as silk with no noise or clatter, i gave it a little gas to see if the light would go off or flash and it didn't,, it just stayed lit so i turned it off and left it... she still has the original engine with the original oil sending unit. i just hope that sending unit has gone bad and i'm not looking at a re-build


Last edited by alive 75 on Mon Mar 25, 2013 7:20 pm; edited 1 time in total
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Post by ant7377 Sun Mar 24, 2013 1:20 pm

Reach back there and jiggle the wire for the sending unit. It might be chaffed and touching,making the light come on. Worse comes to worse hook up a oil pressure gauge in place of factory sending unit and see whats going on. Still crap,order 454 from Summit and be done with it!
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Post by 77mali Sun Mar 24, 2013 1:37 pm

The sending unit wires in the harness are the thinnest I've run across yet working on the car. It's probably frayed - mine split in two when I was taking it of the sender while taking the motor out. If it's running right- it s/b ok, double check that wire.
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Post by pila Sun Mar 24, 2013 1:49 pm

If it's the engine itself, the oil light would have lit when the engine and oil were hot, the last time you drove it. Very likely it's wiring or the sending unit.

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Post by JB2wheeler Sun Mar 24, 2013 6:38 pm

You say the oil was full, did you look to see if it was milky looking?
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Post by alive 75 Sun Mar 24, 2013 8:35 pm

i started it again this afternoon, this time after about 2 minutes of it idling the oil light came on. I wiggled the wire and the light went off, then came back on. I let the motor idle for about 5 minutes taking a chance and nothing happened, I'm picking up a oil sending unit in the morning and hopefully this will stop the light from coming on, the oil is clean and not milky as if the head gaskets went bad, i changed the oil back in November before it was stored for the winter.
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Post by ant7377 Sun Mar 24, 2013 9:43 pm

Good to hear,you would really like the 454 though,trust me on this.
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Post by alive 75 Mon Mar 25, 2013 7:29 pm

installed a new oil sending unit earlier today and the oil light is OUT. took her out for about a 30 minute ride and everything was normal. so i can now move on with my headers and new exhaust upgrades cheers

ps... ant7377 i will have that 454 someday,, i gotta stretch this old 350 as far as she will go,, pay a few bills off,, then concentrate fully on the an engine upgrade.

thanks for all you guys support and suggestions.. Danny
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Post by ant7377 Mon Mar 25, 2013 7:40 pm

Good to hear !
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