Question about 2002 Mazda MPV

2 Answers

How do I know if my timing chain was replaced correctly?

I had my timing chain replaced. I took it back to the mechanic because of irregular vibration when at idle with car in Drive and especially when the AC is ON. He drove the Van lifted hood and He said the motor mounts need to be replaced. The Van was fine before the work was done and vibrated after the work was done. I think it may be an incorrect timing belt replacement. Can they check timing belt without having to take all the parts back out again? What to do now?

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2 Answers

I would guess all your motor & transaxle mounts
need replacing on a 2002. I would do them all
if it was mine
The timing belt would have to be looked at with
a camera, that most shops don't likely have,someday
they will realize they need every new tool out there.
They can look at scan tool data & use an oscilloscope
to check cam & crank positions.
Can't go by the A/C being on ,as it loads the engine
& cycles on & off & pulls the idle down,the computer
should be able to adjust that, but it takes time if your
braking quickly etc.
Shop do a poor job of selling services because no
trust what they say
I would know you mounts are gone when I saw a 11
year old car pull on to the lot
Now try & sell that & a need timing belt together
You would be considered dishonest & accused
of ripping off the customer,which is as not the case.
You can find a shopping list of worn & neglected parts
on all vehicles

Posted on Jul 19, 2013

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  • Master
  • 2,069 Answers

In most cases they can take the valve cover off to expose the Upper Cam sprockets. They can also take the tire off and get to the Crank to set TDC. With the Crank pulley lined at TDC they can see if the Cam sprockets are on their correct marks.

Posted on Jul 19, 2013

  • wadingriver
    wadingriver Jul 19, 2013

    Oh, some motor mounts have to come off to do this job, while other take the strain of the engine hanging on them. They may have stressed them to get them off OR they didn't put them on correctly. That may be your vibration.

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Posted on Jan 02, 2017

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SOURCE: Does the water pump have to be replaced with the timing belt?

teh resaon he wants to replace your water pump is because it runs off of your timing belt.and if it should fail later down the road after belt replacement.then you will be looking at another big expense having the same job done twice.i would rcomend you do get the waterpump replaced also.as for you other problem im not sure. samboiv

Posted on Jun 19, 2008

starstruck10
  • 3 Answers

SOURCE: I have a 2001 Millenia

Replaced the timing belt and Tensioner and it works great now.

Posted on Dec 20, 2008

  • 110 Answers

SOURCE: 2001 B3000 Mazda truck vibrating when idling and

have you had the catalytic converter checked at the local exhaust shop? try that first. is the truck a 4wd? time to start checking the ujoints. do a compression check on all cylinders and see if there is a major drop in that hole that is misfiring. let me know what you come up with.

Posted on Mar 05, 2009

mx5turbo92
  • 545 Answers

SOURCE: drivetrain vibration

try your drive shaft common problem for 240sx

Posted on Jun 03, 2009

  • 2 Answers

SOURCE: I have a 2003 Mazda MPV , the problem only happen

I ahve same issue with my 2004 MPV. I replaced the plugs, coils etc. No help.

did you ever get it fixed?

Posted on Mar 24, 2010

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Hi, your diagram is below. Also threw in the timing marks. Not sure how hard it is to get the top cover off the timing chain as I have not worked on this engine. If you could get a peek at those timing marks you could verify valve timing. Let me know if you have more questions, and thanks for using FixYa.

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If your mechanic is a good mechanic you should be able to take it back into that mechanic and have them recheck their work at no additional cost. There are many bolts holding on the: Power Steering Pump, Alternator, Water Pump, Belt Tensioner, Crankshaft Pulley and Idle Pulley. Many of these have to be removed inorder to replace the Timing Chain Cover Gasket. It they were not tightened down correctly, this could be the vibration you are describing. Also the Front (right side) Motor Mount had to be loosened to gain access. If this was not tightened down correctly, it could cause vibration.
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Let me know if this helped, or if you have additional information or questions. Feel free to contact me at

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Help me please


it could be a problem with miss firing. if it vibrates, one cylinder could be not firing and specially with a load.

try to check you spark plugs and replace if possible.

tnx 4 using fixya,


drcool

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