| antnecc |
I'm ready to change the timing belt, we are getting close to 60,000 miles.
I read the Acura Service Manual 2004 MDX
I have access to a Astro Pneumatic AP 7809 or the ZDMAK HO50 to remove the crankshaft pulley.
Is anyone familiar with either tool or suggest one of these over the other or another tool altogher?
The last steps in the manual manual says to preform these final steps
PCM powertrain control module reset
CKP crankshaft position pattern clear
CKP pattern learn procedure
all via the HDS honda diagnostic system
Quesitons being
Do I need the (go to the dealer) HDS tool to do this? IF so how far can one drive after changing the timing belt without doing any of the reset/clear/learn procedure before a problem starts.
Will the Teradyne pocket tester fulfill these procedures?
Is it really necessary to do the reset/clear/learn after changing the timing belt?
How would the home mechanic get away without a HDS for this application?
thanks for any help]
Anthony
2004 MDX 54,000 miles |
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| JimH |
Does the 2004 require a change at 60,000 miles for the timing belt?
The 01/02' model requires the change at 105,000 miles. |
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| highcountrymdx |
| My service manual also says 105,000 miles for the timing belt change. A few folks here have suggested changing the water pump at the same time. |
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| antnecc |
Jim
that is correct 105,000 I was thinking about my other older honda's when the belts had to be changed at 60,000 or so
Anthony |
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| softgenious |
| What does it cost to have a dealer change the timing belt and waterpump? Does it really need to be done at 100,000 miles if the vehicle is running great? |
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| shootist |
quote:
Originally posted by softgenious
What does it cost to have a dealer change the timing belt and waterpump? Does it really need to be done at 100,000 miles if the vehicle is running great?
Changing the timing belt doesn't make the vehicle run any better. If the old timing belt breaks, however, the valves open at the wrong time, while the piston is at top dead center. THis means the engine is truly messed up and must be rebuilt- new pushrods, valves, pistons, and connecting rods, etc. |
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| mdxforever |
quote:
Originally posted by antnecc
Jim
that is correct 105,000 I was thinking about my other older honda's when the belts had to be changed at 60,000 or so
Anthony
thats 60k for "severe" conditions and 90k for "normal". |
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| dj-mdx2 |
quote:
Originally posted by softgenious
What does it cost to have a dealer change the timing belt and waterpump? Does it really need to be done at 100,000 miles if the vehicle is running great?
Recently had timing belt replaced for $315. Originally I wanted the water pump replaced too but they didn't have one in stock (duh) so they just inspected it. That would have added another $160 or so. It's not required but might as well change it since I won't be having any major work done any more of that nature. |
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| LeftCorner |
quote:
Originally posted by shootist
THis means the engine is truly messed up and must be rebuilt- new pushrods, valves, pistons, and connecting rods, etc.
Hmm, never seen a Honda engine w/ pushrods?:confused: |
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| Gregc |
No Pushrods in an overhead cam engine. The reason to change the timing belt at the recomended change interval is that this engine is an interference design. In other words the Pistons and the valves can contact each other if they are not held in time with the timing belt. When the belt breaks the pistons continue to travel but the valves stop, causing the pistons to hit the vlaves. This normally bends the valves, but could break a piston. It is very hard to bend a connecting rod, but I suppose that is possible.
It is false economy to not change the water pump at the same time of the timing belt replacement, as the water pump is driven by the timing belt. It is also a good time to replace the tensioner and the idler pully's as most of the cost of a timing belt replacement is labor. While you have it apart replace the front crankshft seal as well. If you have not changed the drive belts, replace them too and the tensioner. Check the vlave clearances and replace the spark plugs and the coolant and your MDX should be ready to go another 60,000 before you need to change the coolant.
Greg |
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