Question about 1994 Chevrolet S-10 Blazer

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Oil pressure switch

Where is oil pressure switch on 94 blazer s-10

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  • s60six May 11, 2010

    what engine does your truck have?

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It's on the back of the block, right behind the distributor on left side of engine, on a 4.3 liter engine

Posted on Jan 03, 2009

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Lost all oil pressure and the blazer shut off. its a 1985 2.8 v6. is there a automatic cut off in the car? And how hard is it to change the oil sending unit?


The fuel pump gets power from the oil pressure switch once the engine is started. So if oil pressure drops below 5 psi the engine should stop.
Other than a special socket to fit the oil pressure switch, its not too difficult to change.

Jan 23, 2014 | 1985 Chevrolet S-10 Blazer

1 Answer

Where is the oil pressure/fuel pump switch located on a 1994 chevy blazer s10


I will assume this is a 4.3 engine, the oil pressure /fuel switch is located on the rear of the engine next to distributor, what is the problem?

Dec 08, 2012 | 1994 Chevrolet S-10 Blazer

1 Answer

94 s10 Blazer dumped oil


Either the oil filter gasket blew out due to a stuck pressure relief valve or if you just changed the filter then you left the old filter gasket on, they do stick and sometimes get missed. other possibilities are a hole in the oil pan or an oil pressure sending unit that has come apart..

Feb 07, 2012 | 1994 Chevrolet S-10 Blazer

2 Answers

Low oil pressure after engine warms up in 94 blazer with 4.3


I have a 99 blazer and ever since I have owned it, it reads lower in pressure when idling, but will go up too 40 while driving. This is normal for the vehicle. If the pressure gets real low, and stays low, it means its time for an oil change.

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

Jan 09, 2010 | Chevrolet Blazer Cars & Trucks

1 Answer

My 94 s-10 blazer stalls when you give it gas


Have you checked your firing order. If you have a plug wire switched this would easly happen.

Oct 04, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

88' s-10 blazer w/ 4.3 lt, oil pressure switch?


Look at back of engine on drivers side of distributor, screwed into block.

Jul 01, 2009 | 1988 Chevrolet Blazer

1 Answer

Knocking after fixing fuel in oil problem


you did change the oil after all that gas whent in the oil let me now pierre p.s dont rate thanks for trying

Mar 01, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Really bad gas milage


The 93-94-95 all have this problem ..the fuel line that come into the back do split and leak ..other problem is with vaccum lines coming off the back of intake and vacuum lines come apart from a 3 way fitting.located fire wall .when these are off will cause gas smell and bad millage .... hopes this helps...

Dec 10, 2008 | 1994 Chevrolet S-10 Blazer

1 Answer

Blazer will not start has spark and fuel pressure


the problem is common for the 93-94-95 4.3 vortex its the spider injection located inside the plenum the part costs between $250 to 400 i had to replace on girlfreinds 94 blazer. ifound one o ebay for $100

Nov 06, 2008 | 1994 Chevrolet S-10 Blazer

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