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How do I know if my harmonic balancer is bad - Suburban 2500 Chevrolet Cars & Trucks

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SOURCE: BAD HARMONIC BALANCER

To remove the harmonic balancer on my 1992 Pathfinder, I needed to loosen the alternator and power steering belts, remove the cooling fan (4 10 mm nuts), remove the radiator (2 10 mm  bolts hold it to the frame, remove top and bottom hose [The drain **** is covered by what appears to be a coolant line], as well as the overflow tube to the reservoir. With a 3/4" impact gun and a 27 mm socket, remove the bolt that retains the alt, ps shieves and the harmonic balancer to the crankshaft. With a large 3 jaw puller, remove the harmonic balancer with the pully sheives as an assembly. I do not recommend attempting the removal without the puller.
To  put it back on, you will need a large torque wrench for the crankbolt and a small torque wrench for with a crowsfoot for the fan nuts.

Posted on Dec 01, 2008

  • 4088 Answers

SOURCE: harmonic balancer bad car runs real bad

The harmonic balancer controls the triggering of the combined crankshaft/camshaft sensor. This controls ignition plus fuel injection. Replace the balancer and adjust the sensor or replace it if damaged.

Posted on Oct 18, 2009

Testimonial: "very helpfull ty"

  • 881 Answers

SOURCE: I need to replace the harmonic balance seal.

THE thread is a std Left hand to undo But you will need a 3/4 drive100 lbs air rattle gun to both undo and redo up the bolt on front pully.. BUT there is another way and that is as you say a big breaker bar and a good socket, but you will have to take off the starter motor and put a good fitting bar into the starter ring teeth and turn it to the top and dont let it slip out of the teeth and once locked into place gently put pressure on and undo the bolt..
But its unusual for the seal to leak on its own as its mostly due to either the front pully has worn a grove in it or the crankshaft bearing is also worn, so check the front pully for wear first. Ron

Posted on Nov 23, 2009

Testimonial: "This is good advice. Pretty much along the lines of what I was going to do but it is good to get confirmation from someone who knows. Cheers"

  • 599 Answers

SOURCE: no treads on harmonic balancer

the pulley on the crankshaft should have grooves in it for the belt, otherwise the belt will not turn. is the pulley broken off, get back to me. there are NO technical servise bulletins on this item,if you need more help get back to me, Thanks Ray

Posted on Dec 11, 2009

  • 296 Answers

SOURCE: I have read the question about the crankshaft

The end of the crankshaft is usually called a snout, because that is what it looks like — just a shaft sticking out of the front of the engine between 1½" and 2" in diameter, with a threaded hole in the front, and a key-way along the side.

The harmonic balancer slides over the end of the crankshaft, and is held in place by a bolt and washer goiing into the front of the crankshaft.

The harmonic balancer usually has a ring around the outside separated from the part that goes over the crankshaft by a ring of neoprene. The neoprene and that outer ring are the vibration damper, preventing the crankshaft from ringing. On the face of the balancer the pulleys for accessories are mounted.

Every engine I have worked on — except motorcycles, lawnmowers and outboards — use this arrangement.

Regarding your case, I would do the disassembly first, then — with the parts in your hand — go get the replacement parts. Best guarantee I know of to make sure you get the right parts.

Posted on Jun 21, 2010

t_bone22565
  • 1 Answer

SOURCE: torque spec for 1RZ harmonic balancer

how can i set a toyota 1rz engine on timing

Posted on Dec 29, 2012

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1 Answer

Hit a deer and it threw off my harmonic balancer.I got the harmonic balancer replaced. Week or so later the harmonic balancer started wobbling again and it will barely stay running


Depending on your speed at the time of the crash and the weight of the animal and the amount of driving that you did after the crash, the crank shaft bearings might be bad.

Apr 24, 2015 | Cars & Trucks

1 Answer

I have a 1995 mazda miata that needed a new harmonic balancer, new battery, and oil. It was working fine until I was coming home from work ( after putting 10W-40 and 10W-30 motor oil in it) and had noticed...


Any Noises and/or Stalling or Misfire(s) ?
Will Engine Crank ? If so does it Crank Fast or Slow and/or Really Slow like rrrruh....rru...rrru..rrururu ......click.click.click.click.click .
POSSIBILITY - ALTERNATOR BAD or going BAD it' not generating power to keep the battery charged therefore causing all Electronics to slowly fail as the battery loses all life ?
Need more Info and Why was a HARMONIC BALANCER needed? The obvious of course it was bad , But you are driving a MAZDA and a harmonic balancer isn't just a harmonic balancer it has to be the EXACT HARMONIC BALANCER , they can look identical and still be different . What was the REASONING for the replacement?NOT A COMMON PROBLEM.

Dec 05, 2013 | Cars & Trucks

1 Answer

Noisy motor front end vn v6 commodore, bad rattle sound??????????


It sounds like your timing chain may be worn, A bit of a pain to change but do-able if you have the tools and some time. The harmonic balancer makes more of a knock than a rattle.

Mar 04, 2012 | Cars & Trucks

1 Answer

How come the harmonic balancer is not lined up with the other pullies and the belt keeps slipping off or breaking in the middle?


the harmonic balancer is bad they have a rubber bushing in them which goes bad and sets them off the rest of the pullys you will have to replace the harmonic balancer and that should take car of the problem if you have any other questions feel fre to ask hope that info helps

Nov 22, 2010 | 2002 Pontiac Grand Am

1 Answer

I have read the question about the crankshaft pulley wobbling really bad and needing a harmonic balancer and my question is....is the harmonic balancer and the crankshaft the same thing? I have the same...


The end of the crankshaft is usually called a snout, because that is what it looks like — just a shaft sticking out of the front of the engine between 1½" and 2" in diameter, with a threaded hole in the front, and a key-way along the side.

The harmonic balancer slides over the end of the crankshaft, and is held in place by a bolt and washer goiing into the front of the crankshaft.

The harmonic balancer usually has a ring around the outside separated from the part that goes over the crankshaft by a ring of neoprene. The neoprene and that outer ring are the vibration damper, preventing the crankshaft from ringing. On the face of the balancer the pulleys for accessories are mounted.

Every engine I have worked on — except motorcycles, lawnmowers and outboards — use this arrangement.

Regarding your case, I would do the disassembly first, then — with the parts in your hand — go get the replacement parts. Best guarantee I know of to make sure you get the right parts.

Jun 21, 2010 | 1996 Nissan Maxima

1 Answer

Harmonic balancer bad car runs real bad


The harmonic balancer controls the triggering of the combined crankshaft/camshaft sensor. This controls ignition plus fuel injection. Replace the balancer and adjust the sensor or replace it if damaged.

Oct 18, 2009 | 1998 Pontiac Bonneville

1 Answer

Harmonic Balancer needs replaced. How long can I wait until I have to get this done?


its bad the harmonic balancer , balances the crankshaft in relation its a dapener as well as it rotates the timing ..change it soon...

May 07, 2009 | 1999 Pontiac Grand Am GT

1 Answer

1988 dodge ram 50


Greetings!
Further to Tinkertoys1's note...

Yes, the harmonic balancer is manufactured to only fit on one way.
Now, knowing this, the harmonic balancer has a timing mark set into the outside area of the balancer.

Cheers, Jay

May 18, 2008 | 1988 Dodge Ram 50

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