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Car Forum / Honda Cars / November 2007Honda timing belt tension
I just replaced the timing belt on my 2000 Honda Accord and it sort of runs OK. I am not sure I did it 100% right. There is grinding noise from the timing belt teeth now and then when the engine runs slowly. I drove the car to work today on the highway and it runs fine when the engine is up to speed. The Honda manual was not too specific on belt tension. I took the car apart a second time and the belt tension seemed OK. I am wondering if the belt will stop grinding when it wears in. I was hoping to take a long Thanksgiving day trip, but I don't know if I can trust the car. I could give up and have the dealer look at it but I hate to give up. Any suggestion on checking the timing belt installation and tension myself? Are you positive that the noise is in fact the belt? Did you change the water pump? Does the Accord have a single "serpentine" drive belt for the alternator, ac, and ps pump? If not and they are separate belts, you had to remove them to get at the timing belt so maybe you have incorrect tension on the alternator, ac, or ps pump. If so, the noise could be coming from the bearings in any one of those. If you can get your hand or a finger in there carefully while the engine is running, try touching the timing belt cover and see if you can "feel" the noise. Check the covers, make sure they aren't loose or vibrating. I've done the belt twice on my 99 Civic. The manual shows the sequence of installation on the belt pulleys: crank to tensioner to water pump to camshaft. The tensioner pulley is then loosened so it springs back into place and applies tension. The tensioner should move freely without binding. The timing marks are then rechecked. Then the engine is then turned about five turns. The timing marks are then re-checked again. If ok, the tensioner is loosened 1/2 turn, the engine is turned 3 teeth on the cam pulley, and then the tensioner is retightened. I don't know if the belt itself would be "grinding". Pete >I just replaced the timing belt on my 2000 Honda Accord and it sort of > runs OK. I am not sure I did it 100% right. There is grinding noise [quoted text clipped - 11 lines] > Any suggestion on checking the timing belt installation and tension > myself? > Are you positive that the noise is in fact the belt? Did you change the > water pump? Does the Accord have a single "serpentine" drive belt for the [quoted text clipped - 18 lines] > > Pete None of mine grind afterwards. Grinding noises are a 'bad thing'! I always change the tensioner, water pump, all belts, hoses, and the thermostat, at one time, when I change the timing belt. I agree it could be the tensioner, if it wasn't changed, or, a different accessory bearing suffering under too much load from an over tensioned v-belt. I don't poke any body part I cherish into moving machinery. I use the cheap long screwdriver or the $5.99 mechanic stethoscope, from http://search.harborfreight.com/cpisearch/web/search.do?keyword=stethoscope&Submit=Go > > Are you positive that the noise is in fact the belt? Did you change the > > water pump? Does the Accord have a single "serpentine" drive belt for the [quoted text clipped - 32 lines] > > http://search.harborfreight.com/cpisearch/web/search.do?keyword=steth... Thank you for your replies. The belt teeth are definitely griding. Nothing else would sound like that. I will try the tensioning procedure as you described and in the manual again. Hopefully I got the tensioning hardware in place correctly. Otherwise I have to take the whole thing apart again. I replace both tensioning wheels and both the timing and balancer belts I got from a CNS kit on ebay. I did not replace the water pump because I thought it would take another hour or so. Are the CNS kit parts OK? I thing the belts were ITM but I am not sure since the car is not in front of me right now. The car runs OK but I hear the grinding now and then especially when the engine is running slowly. Thanks. > Thank you for your replies. The belt teeth are definitely griding. > Nothing else would sound like that. I will try the tensioning [quoted text clipped - 9 lines] > > Thanks. --------------------------- Removing the valve cover will be sufficient to see if the belt is SHREDDING / jumped out of time. 'Curly' > aja...@verizon.net wrote: > > Thank you for your replies. The belt teeth are definitely griding. [quoted text clipped - 17 lines] > > 'Curly' After readjusting the belt several times, I finally gave up and took the car to the dealer. It turns out the noise I was hearing was not any of the belts but a rattling due to the engine mount not being put back right. They said the mount was not aligned right. They charge $114 to fix it. At least they were fair about it. Thanks for your comments. |
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