Question about 1996 Chevrolet S-10 Pickup

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Put a junk yard engine in my 96 blazer s10, the old engine oil pressure read between 40 and 60. the new one reads between 60 and 80. is this a cause for concern?

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No!
let me clarify 1st off if you have not gotten rid of the old engine use the sending unit off the original engine,as the readings from the other may be to a different type/ style of gauge .the replacement engine could just have less wear and therefore holds better preasure.

Posted on Nov 12, 2009

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I WOULD CHANGE THE OIL TO A LIGHTER GRADE OIL IT SOUNDS LIKE SAE 40 OR HIGHER IS IN THE MOTOR

Posted on Nov 12, 2009

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2 Answers

What is causing my 96 Chevy Blazer 4.3 to read low oil pressure at an idle? Oil is full, and check gauge light comes on when the oil pressure gauge shows low.


1996
Hmmmm
20 years old.
Could be it's just getting tired, as in worn components.
As long as you're getting adequate pressure at operating RPM it should not be a major concern.
If you're not using 15W 40 I would suggest doing so.
Cheers.

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Oil pressure always changes with rpm.
At idle you should have around 10 psi, and it should max out at high rpm around 50 psi or so.
You not only can't have as much pressure at idle, but you don't need it either.

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1 Answer

Oil pressure gauge is reading 80 psi. I had the


The oil sending unit is located on the engine block behind the drivers cylinder head area.You have to climb up on the motor to see it cause it is hard to see behind the wiring harness.You may also want to purchase a new sending unit because it is very long and you might need to buy the sending unit socket to replace it.Hope this helps.Good luck.

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As long as the pressure goes up when you give it gas, it is fine.

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I have a gmc envoy (same thing) and it does the same thing. normal.

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1 Answer

Oil pressure gauge reads 80 psi with engine off and pegs running


That is probably a defective oil pressure gauge or a broken oil pressure sender, it reads 80 psi just because that is the maximum value allowed.

Pressure can be verified by reading it with a gauge tool.
If you really have pressure over 70 psi when engine is running then start replacing the oil filter, and check that the oil lines from pump are not obstructed, if there is nothing in there then replace oil pump.

If instead the gauge reads 80 with engine off, that is a defective pressure gauge.

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1 Answer

99 dodge dakota. Oil pressure moves between 40 & 80.


Believe it or not....this is actually normal depending on which oil that you use. Some of the thinner oils will cause this to jump around and the thicker oils will make it jump around less. When you first start the truck the oil is thicker and will read a high psi then get lower with less rpm while the oil warms and then gets thinner then builds pressure again with more volume being put through the engine while you drive down the road hence going back up to 80 psi. This is typical winter issue with the Dakota's in general. I would only be concerned if the pressure bottoms out while driving or starting.

Thanks for using fixya!

Sincerely,

JC

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2 Answers

Starts but well not stay running


did you check fuel pump relay?

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