Question about 1988 Oldsmobile Delta 88

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Harmonic balancer went bad, replaced it and crank sensor (also adjusted sensor) now have a ticking coming from area. Car now stalls intermittently, also hesitates on heavy acceleration. Could this be the timing gear issue that GM had (neoprine coating on gears)?

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  • gryghost99 Jul 15, 2009

    Rubber dry-rot and tore half out... pulley shifted and was catching on the safty

  • gryghost99 Jul 22, 2009

    Engine is the 3800 (VIN C). After checking/adjusting the crank sensor, the light tick went away. Still had a hesitation when accelerating. Heard a noise coming from the timing cover. Removed cover and found tensioner was broke. Decided to replace the gears/chain. Noise is gone... :)

  • Richard Scordino May 11, 2010

    Missed your post July 15 there was a problem with the system...What you did is what I would have suggested (Why I asked exactly what had happened to the pulley)...glad you figured it out!!!

  • Richard Scordino May 11, 2010

    What was bad on old balancer?



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I have a chevy impala with 3.4 engine i recently changed harmonic balancer pully but didnt change the sensor now my car mis fires when i accelerate. could it be i need tochange the sensor.

Posted on Jan 07, 2010

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Crank sensor is hitting balancer. One of the interupter blades may be bent. 3800's do not have timing chain or gear problems. Now a 3.8 will. Does yours say 3800 on top of engine? These ar two different engines.

Posted on Jul 22, 2009


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1 Answer

How do i replace a crank shaft sensor on a 2001 buick lesabre

The crankshaft sensor is located behind the harmonic balancer. There is a special tool you can rent/loan from your local auto parts store in order to remove the harmonic balancer. Once it is off 2 bolt hold the crankshaft position sensor in place. Note there could be many other factors causing your engine to stall or not restart; but those crank sensors do tend to go out on those engines.

Sep 21, 2014 | 2001 Buick LeSabre

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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 .
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

It sounds like a lifter i was told it was the harmonic balancer by several people i replaced it car stick making ticking noise and picks up speed slow

I am curious why they said harmonic balancer and you replaced it, there is a crank sensor near the harmonic balancer was it rattling or loose they have a tendency to get loose,the harmonic is the big main pulley when that breaks because it is vulcanized then yes it tick and your car looses power.You check sparkplugs for being loose and not being tighten up,check the air filter too,I am sticking with the Harmonic balancer this time remove the drive belt but dont do it too long or it will overheat just for 2 minutes maximum see if the noise goes away. 2 minutes only battery wont charge also

May 06, 2011 | 1998 Buick LeSabre

2 Answers

My 97 sunfire has a bad cranck shaft sensor. where is that located? would it also make the car not start?

Yes it would and will make the car not start. Your crank sensor is located behind your harmonic balancer, which is the large pulley that turns all the belts. THe one that is coming off the crank shaft.

Apr 10, 2010 | 1997 Pontiac Sunfire

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

2 Answers

I have a 1997 Buick Regal LS my wifes car she says when she is driving down the road the car will lose power and then it comes right back it also sometimes will not start. The check engine light comes on...

P0300 is a random misfire code not a Crank Sensor Code. Alot of cars don't rely on the crank sensor for fuel and ignition timing but simply to check misfires. However, some cars do need the crank signal to stay running. It's possible that the sensor has an intermittent short or open in it and the car is dying when the signal is lost. If i remember correctly the crank sensor on a 3.8 is behind the harmonic balancer. So that would require removing the drive belt and balancer to get to it. Not a real challenging procedure but it will likely require the use of a harmonic balancer puller.

Oct 04, 2009 | Buick Regal Cars & Trucks

1 Answer

Replaced the harmonic balacer & crank sensor but it will notcrank

It sounds like you have a bad battery if it isn't turning over fast, and you are getting rapid clicking.

Jul 10, 2009 | 1993 Buick Regal

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