MAP and O2 Sensor testing

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Merry Christmas Everybody!!

Hope your holidays are going well. I need some help as I get ready to
go down to visit family.

Some may remember I the trouble I've been having wuith my 93 V6 and it's
10 mpg. I pulled the codes and got a 13 and a 51: MAP sensor and O2
sensor. I've finally got the cash to replace the two if I have to, but
I'd like to check and make sure they are the problem before I shell out
over $100 for parts...

Can anyone tell me how to check these sensors? Crank and Chrome on TNN
checked the MAP sensor on a new C1500 thsi past weekend, but what
numbers on the ohmmeter and voltmeter should I be seeing? Any help if
appreciated. I'm leaving Thursday night and if I can fix this before I
leave, it'll save me a tank of gas each way by fixing my mileage...

Thanks folks,
Mike S.
93 Dak V6 5-speed Sport

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