BIGCHEVYTRUCKDRIVER
1/2 ton status
Mine has 300K+ and the speedo stopped workin recent new head and timing belt mine makes noise even after a brand new distributor with new cap seperate problem
CK5
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1992 accord squealing at start up
- Thread starter shaun89
- Start date
shaun89
1/2 ton status
so i checked the dist. cap and there is no crap under there. i also put ear plugs in and put my head under the hood when she started it, im 99% sure its either the power steering pump and/or alternator. do u think the alternator is just tired and not charging and putting a lot of drag on the belt at first?
blazin_blazer
1/2 ton status
try the magnetic test on shaft on rear of alt
shaun89
1/2 ton status
hmm, ive never heard of that, i get what you r saying, but when do i put it on there and what should i look for?....i was thinking about putting on some ear protection and before she starts it in the morning use my multimeter to test the alt. while she starts it and see if the squeal and readings go hand in hand.
blazin_blazer
1/2 ton status
the alt shaft is magnatized when its charging, while its runnin put a screwdriver or feeler gauge to the shaft at rear of alt...if its charging it will attract the screwdriver to the shaft, but it may still be charging and squeling, so not sure if it will help or not. have you tryed to see if any pulleys have any play in them?
shaun89
1/2 ton status
so i think i figured it out, i did the magnet trick and used a multi meter and the alt. is putting a lot of drag on the belt at first then charging as usual....so i guess i have to change a honda alternator soon...damn, but thanks for all the help, ill post up anything if it doesnt do the trick. thanks!
so i think i figured it out, i did the magnet trick and used a multi meter and the alt. is putting a lot of drag on the belt at first then charging as usual....so i guess i have to change a honda alternator soon...damn, but thanks for all the help, ill post up anything if it doesnt do the trick. thanks!
So I realize that this post is from 8 years ago, but I'm having this problem now and was hoping maybe you would get and notice a notification in your email, and actually take a peak at a reply to your post and tell me if you did or did not have to change the alternater and if you tried anything else that actually worked?
Sorry for the run on sentence! Thanks
A friend of mine had an older Mazda 626 that squealed like a stuck pig after a start up,especially in cold weather--after several seconds to a minute or more the belt would stop squealing ,like someone flipped a switch...belt was old,so he decided it needed replacing...
He tried 3 different brands of belts,a Gates,Dayco,and Goodyear,they all squealed,some worse than others--then he tried belt dressing ,that silenced the squeal for a day maybe..
He even took the car to an auto electrical shop to see if the alternator was putting a heavy drag on the belt after a start,the guy said it is "not uncommon" for the battery to need a "boost" after being drained from cranking,so the regulator will make it put out high amps for anywhere from 10 seconds to a minute or more,which can make the belt squeal--then once the battery builds up a charge again,it'll reduce the charge rate and the belt will stop squealing..
At his advice,he replaced the alternator,though it seemed to work fine,because it was original with over 90K on it,the pulley was worn and smooth,and the old bearings might be going,which may account for the belt slipping and squealing...this silenced the noise for a day,which was about the same amount of time replacing the alternator took,it was in a real sucky location...
All the other pulleys and tensioners were in good condition,so he ruled that out...in desparation he went to a Mazda dealer,who suggested he buy a genuine Mazda belt for it--he installed it,and the noise vanished and hasn't returned yet,over a year later...the "factory" belt actually costed a few bucks less than the ones from parts stores too..
...
He tried 3 different brands of belts,a Gates,Dayco,and Goodyear,they all squealed,some worse than others--then he tried belt dressing ,that silenced the squeal for a day maybe..
He even took the car to an auto electrical shop to see if the alternator was putting a heavy drag on the belt after a start,the guy said it is "not uncommon" for the battery to need a "boost" after being drained from cranking,so the regulator will make it put out high amps for anywhere from 10 seconds to a minute or more,which can make the belt squeal--then once the battery builds up a charge again,it'll reduce the charge rate and the belt will stop squealing..
At his advice,he replaced the alternator,though it seemed to work fine,because it was original with over 90K on it,the pulley was worn and smooth,and the old bearings might be going,which may account for the belt slipping and squealing...this silenced the noise for a day,which was about the same amount of time replacing the alternator took,it was in a real sucky location...
All the other pulleys and tensioners were in good condition,so he ruled that out...in desparation he went to a Mazda dealer,who suggested he buy a genuine Mazda belt for it--he installed it,and the noise vanished and hasn't returned yet,over a year later...the "factory" belt actually costed a few bucks less than the ones from parts stores too..
...
Since Kevlar belts work great on lawnmowers where standard rubber belts are quickly destroyed, I wonder how a mower belt would work on an alternator. The nice thing is that tractor supply (and the like) have them on display in every size imaginable.
I should really try one on my air compressor
I should really try one on my air compressor
Kevlar belts are normally used on things that use the belt as a clutch,with a back side idler pulley--but they are much tougher construction and hold up to abuse a lot better,and the canvas like fabric grips pulleys better than a "black" automotive belt..
I ran a kevlar belt on my 6.2's alternator for awhile,it did not slap around like the typical stock belt did,and I noticed an increase in the volt reading on the gauge,it also
eliminated a screech that lasted until the fast idle cold advance switch shut off after a cold start in frigid weather..
..unfortunately it was a 1/2" wide belt and though it fit the crank and water pump pulleys fine,the alternator pulley was narrower and it eventually chewed a "line" just under the top of the belt,and the top part was sawed off and it failed..
The stock GM belts & pulleys are designed to fit a 7/16" wide v belt..
If they had a 3/8" kevlar belt 48" long at Tractor Supply I'd buy one,but they dont have any that skinny,just 1/2" or 5/8"..
I have been tempted to swap the alternator pulley for a double one on another alternator that looks like it would accept a 1/2" belt..since my alternator has been making a fairly loud whine after a start lately,I may end up swapping the alternator with the wider double grooved sheave on it instead..and get another kevlar belt..I think the diode trio may be on its way out on the original thats been in it 13+ years...
I ran a kevlar belt on my 6.2's alternator for awhile,it did not slap around like the typical stock belt did,and I noticed an increase in the volt reading on the gauge,it also
eliminated a screech that lasted until the fast idle cold advance switch shut off after a cold start in frigid weather..
..unfortunately it was a 1/2" wide belt and though it fit the crank and water pump pulleys fine,the alternator pulley was narrower and it eventually chewed a "line" just under the top of the belt,and the top part was sawed off and it failed..
The stock GM belts & pulleys are designed to fit a 7/16" wide v belt..
If they had a 3/8" kevlar belt 48" long at Tractor Supply I'd buy one,but they dont have any that skinny,just 1/2" or 5/8"..
I have been tempted to swap the alternator pulley for a double one on another alternator that looks like it would accept a 1/2" belt..since my alternator has been making a fairly loud whine after a start lately,I may end up swapping the alternator with the wider double grooved sheave on it instead..and get another kevlar belt..I think the diode trio may be on its way out on the original thats been in it 13+ years...
