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1999 chevy blazer 4.3L 2wd R+R oil pump - Chevrolet Cars & Trucks

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75066 Answers

SOURCE: 99 Chevy Blazer

Have you tested the crank sensor? sounds like no command from PCM to pulse injectors.

Posted on Aug 25, 2008

emissionwiz
  • 75066 Answers

SOURCE: 1999 Chevrolet Blazer oil pump

You must disconnect the motor mounts and remove the colling fan blade(so it won't hit the shroud) and raise the engine as high as poss, then remove the flywheel flex-plate cover and remove all the pan bolts, gently pry the pan from one side to the other until the gasket breaks loose, remove the old oil pump and reverse the procedure.

Posted on Oct 04, 2008

  • 1 Answer

SOURCE: BLAZER 4X4 HI LITES UP BUT THEN GOES BACK TO 2WD, 4WDHI WORKS

My 4by4 doesn't engage,both lights 4hi and 4low blink for few seconds and then goes back to 2wd and that's it, won't engage 4wd...what should I do?

Posted on Jan 17, 2009

  • 132 Answers

SOURCE: 1998 chevy blazer oil leak

Yes you should be able to change it by yourself. It is pretty simple. It will save alot of money

Posted on Jan 30, 2009

  • 13 Answers

SOURCE: 1999 Chevy Blazer - idle fluctuates

oil pump might be going bad

Posted on Aug 03, 2009

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1 Answer

My 1999 Chevy blazer was pouring oil out like a faucet... what's wrong?what do I need to do to fix it.or shall I take it to the mechanic to get it fixed.


check the oil sending unit at the back of the intake manifold and check the oil filter and oil cooler lines one of them might be broken and the oil being pumped out

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I have a 98 chevy s10 blazer 2wd 4 door nad my fuel gauge dont work its stuck on empty i changed the fuel pump several time thinkn it would fix the problem but i didnt. i need a picture or sumthing to show...


You could try changeing the fuel pump relay The fuel gauge signal come from the pump and goes through the relay to the gauge and on your vehicle the pump will still work even if the relay is bad it has a back up power system through the oil pressure sending unit . The relay is located inside of the glove box behind a panal its the one on the far left. I also have wiring schematic of the system but would need to fax it . If you want it get back to me with a fax #

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I suspect you have had an oil pump failure. To get at the rotory gear oil pump you will have to drop the oil pan. After you take the pan off, ( having drained the oil the oil pump is what the oil pick up line leads into. That pick up assy. is a round shaped disc with a screen inside it. Clean the screen first then the oil pump. Install new oil pan gasket on reassembly. Hope that helps you. Please let me know.

Hopefully the engine was not damaged when the pump broke. If it was you may need a complete engine rebuild, MAYBE.

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oil pump bottom of engine inside oil pan

Dec 22, 2009 | 1999 Chevrolet Silverado 1500

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you have to drop the oil pan to get to it...once the oil pan is off there are 2 bolts that holdthe pump in place,,,you will also need a new screen for the new pump.

Jan 03, 2009 | 1999 Chevrolet Blazer

1 Answer

Lost all oil pressure no oil getting to top of engine


mileage?..over heated? oil to top is function of oil pump and oil passageways ..bad worn lower engine (crankshaft/bearings)......oil pump push rod..under distributor driven gear down into block to oil pump in oil pan..clogged passages/oil filter/oil filter bypass...... do a oil pressure test while cranking from port on side of block low and determine if bottom end has the pressure first

Nov 15, 2008 | 1999 Chevrolet Blazer

1 Answer

Oil pump


If it's a 2wd model, remove the engine mount bolts and raise engine enough so you can put a 4x4 between the engine and frame mounts. Remove the oil pan and unbolt the oil pump and drop right out. If it's 4wd, you'll have to remove the engine and basically do the same thing.

Jul 01, 2008 | 1990 Chevrolet S-10 Blazer

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