Question about 2004 Kia Optima

2 Answers

The car vibrates and we can't find the problem

We changed the timing belt and the tensioner and it still vibrates. what do we look at now?

Posted by on

  • debhicks May 11, 2010

    What is the RPM on idle. If it is below 1000 it will vibrate. Not sure if it is at idle or under normal driving conditions.



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Ball joints.

Posted on Jul 22, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

From my experience with vibrations. First does it vibrate while not moving but reving. If it vibrates with or without moving it could possibly be a broken motor mount check your motor mounts to be sure they are not broken. If it only does it while moving it just may be one of your tires with a bad spot. If you keep riding on it you will find that problem shortly ( it will blow out and have a flat tire). Also if its while moving it may be a balancer on the cv joint. If its neither one of those check for any kind of balancer as in a pulley balancer or anything on a rotating part.

Posted on Mar 27, 2009

  • sadfact Jul 22, 2011

    ball joints.



3 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 430 Answers

SOURCE: after replacing timing belt ,water pump and

recheck tensioner...or replace

Posted on Nov 22, 2009

  • 105 Answers

SOURCE: had timing belt replaced and tensioner and still

is the vibration at idle or driving,engine mounts might be metal to metal

Posted on Jan 25, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Mitsubishi Pajero2.5 ltr engine model 4D56, year build 1992. Engine runs like hum noise, after replacing the timinh belts.

Missmatched belt teeth or grooves. Wrong belt for the car installed. Worn waterpump, or bearings for cam.

Dec 13, 2013 | Cars & Trucks

1 Answer

Change cam belt fiesta 1400cc

Refer to your manual for all proper safety procedures.
Engage the emergency brake.
Jack up the car and support it on jack stands.
Disconnect the negative terminal of the battery for your safety.
Make sure the transmission is in neutral.
Remove all spark plugs.
Remove any plastic shields from underneath the engine.
Drain coolant.
Remove cooling fan and any plastic fan coverings from the front of the engine (usually reverse-threaded, so turn right to loosen).
Disconnect all cooling hoses from engine and label for easy reassembly.
Remove the radiator from the car, may or may not have to.
Remove the engine drive belts.
Remove the cap and rotor.
Remove the water pump pulley.
Remove the bolts holding the upper timing belt cover.
Place a socket on the center of the crankshaft pulley. Rotate engine to top dead center (TDC), which means that the first piston in an inline engine is at the top. There's a mark showing TDC on the pulley and the engine.
Loosen the crankshaft pulley bolts. Remove the crankshaft pulley and vibration damper.
Remove the lower timing belt cover.
Mark the location of the main tensioner bolt.
Remove the bolt that holds the tensioner and timing belt cover.
Remove the main adjustment bolt for the tensioner.
Remove the freed tensioner and tensioner spring.
Once the tensioner is off, the belt comes off.
Again, make sure the engine is set to top dead center, which will make confirmation of the timing marks easier.
Install a new timing belt and tensioner, making sure to properly align the timing marks as you do so.
Adjust the tension of the new belt.
Confirm all timing marks are lined up.
Put everything back together, following the reverse of the steps in the previous section.

Dec 05, 2013 | Cars & Trucks

1 Answer

Renault scenic Auxiliary belt tensioner making high pitched noise

Time to replace the pulley, you can test it by pulling off the belt and spinning the pully with your hand or some compressed air, if it makes noise then its time to replace.

Nov 05, 2012 | Cars & Trucks

1 Answer

Drive belt tensioner vibration

Your power steering pump may be locking up or the a.c.compressor.

Aug 22, 2012 | Cars & Trucks

1 Answer

When stopped in drive the steering wheel vibrates a lot when the air conditioner is on .There are already new motor mounts replaced could it be the adjustment of the idle screw ?throttle plate cleaning...

The belt tensioner can cause many of these problems, sometimes the serpentine or fan belt is replaced, but the tensioner is not given much thought, a tensioner that is going out, can cause the belt to not have enough tension to keep the battery charged by slipping, when the clutch on the ac compressor cycles on and off, if the tensioner is to loose, or not tight enough can cause the compressor to vibrate, it can cause wear on other parts attached to the belt even cause pre-mature wear on other pulleys. good luck!

Aug 12, 2011 | 1991 Honda Accord

1 Answer

Squeaky Unibelt

Sounds like the serpentine belt tensioner has gone bad, It's not common for any bolts to go loose but it's common for the tension arm assembly to break apart and vibrate from side to side.
The tensoner pulley does vibrate as the belt moves around it but not side to side. To check the tension arm, with the engine NOT RUNNING. Push on the belt and look at the tension arm, if it moves up and down with the belt then it's ok. If there is lateral movements (side to side) then it's bad and needs to be changed.
If you still not sure, go to Auto Zone or any auto parts store and have them help you determine if it's bad and they may have the part in stock since it's a common part that goes bad and Auto Zone has the step by step to replace it if you'll like to change it your self.
Good luck and hope this helps., P.S if it is the tension arm pulley has gone bad, do not drive too far and long. If it breaks you'll lose all the power accessory.

May 28, 2009 | 2000 Oldsmobile Silhouette

1 Answer


– Mark direction of rotation of toothed belt with coloured felt tip marker pen. – Turn crankshaft to TDC. Mark on toothed belt guard -A- must align with mark on V-belt pulley -B-. – Check position of camshaft pulleys. The larger hole in the locking plates -arrows- must face inwards. hinweis.gif Note If the larger hole in the locking plate is positioned to the outside on the toothed belt pulley, the crankshaft must be turned one revolution in direction of engine rotation. – Remove sealing plug -arrow- from left side of cylinder block. The TDC drilling in the crankshaft must be visible (or able to be felt) in the sealing plug hole. – Screw clamping bolt -3242- carefully into hole onto limit stop so that the crankshaft is secured against turning. – Remove central toothed belt guard. – Unscrew vibration damper. hinweis.gif Note The vibration damper is secured to the crankshaft with 8 bolts. – First remove bolt -1- from oil filter housing, then remove bolts -2- for toothed belt tensioning element cover. – Remove cover. hinweis.gif Note t The toothed belt tensioning element is oil dampened. It can therefore only be pushed back slowly. t Use locking pin -T40011- to lock tensioning element. – If necessary, align holes in housing and on tensioning element piston, before tensioning using long nose pliers or a thin wire. – Turn tensioning lever of toothed belt tensioning roller -1- in -direction of arrow- using hexagon key. – Secure tensioning element with locking pin -T40011- when the tensioning lever of the toothed belt tensioning element -2- has been pushed back so that the holes in the housing and the pistons align. – Seat the camshaft clamp -T40005- into the camshaft locking plates and loosen the securing bolts approx. 5 turns. – Remove camshaft clamp -T40005- again. – Now pull the camshaft pulleys off the tapers using two-arm puller -T40001- and legs -T40001/2-. – Loosen tensioning roller -arrow- and remove toothed belt.

Jan 25, 2009 | 2004 Volkswagen Touareg

2 Answers

Belt vibration

This may be a stupid question, but has the tensioner for the belt been properly tightened?  Does it squeal when it vibrates?  The tensioner for the alternator belt is on top of the alternator and is a bolt you tighten or loosen.  The tensioner for the AC belt is underneath and can accessed with the right front splash guard removed and the car placed on ramps.

Jan 09, 2009 | 1995 Nissan Altima

Not finding what you are looking for?
2004 Kia Optima Logo

228 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kia Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers


Level 3 Expert

77201 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Kia Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides