What should the calculated load value be in park no loads? And in gear with AC and lights on?

Tiny
STUMPED TECH
  • MEMBER
  • 2004 HONDA ACCORD
  • 81,000 MILES
I have a 2004 honda accord 2.4l I have a vibration and have checked evrything and changed everything I know it could be, on the scanner I see a 70% load in gear with air and lights on is this to high of a value and if so what could cause it, the vibration is there all the time at idle but alot worse in drive, and I have a harmonic vibration through the car between 1800rpm and 2200 rpm when on and off the gas
Saturday, December 10th, 2011 AT 3:42 PM

13 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I'm not sure of load values but disonnect the fan belt to see if it's a problem with one of the accessories. Has htis car h ad any work done lately like a trans repair and it started then? It may be a wrong torque converter if it has. Also check to see if the rubberin the harmonic balancer has broken. To do this chalk mark it, give engine a quick rev and shut off. See if the lines still match up.
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Saturday, December 10th, 2011 AT 6:04 PM
Tiny
STUMPED TECH
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The car was in a wreck, I dont know if it did it before the wreck or not, I am trying to fix the car and have checked the harmonic balancer its good, I checked everthing that I would think would cause this and I have been a tech for 30 years and have never seen anything like this car, I think the calculated load value is to high with a load on the car, you can turn the lights off and on and make the car vibrate more and less, any load placed on the engine will make it vibrate worse, I scanned a toyoty matrix with ac on lights on in gear the load value was 35% the honda I have is 70% full load in gear, this is to high I think, I cant find any info on this. Need good running honda to scan and look at value to compare
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Saturday, December 10th, 2011 AT 6:46 PM
Tiny
HMAC300
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Still disconnect the belt for alternator and see if it'ssomehting like that. If this car was in awreck then it's a good possiblility that the vibration is coming from something bent and throwing thigs out of line. You won't need to run teh car long to find out if it is something with the eaccessories. Also was this fixed at a body shop and you have inherited it? Or is it something that you are trying to do yourself. A bent frame cause this as well, like the subframe that the engine and frotn end bolt to.
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Saturday, December 10th, 2011 AT 6:52 PM
Tiny
STUMPED TECH
  • MEMBER
  • 8 POSTS
I have disconnected the belt and the vibration is still there but slight, and only in drive, if I put the bel, t on its still slight, then I can turn the headlights on and it vibrates worse and then the ac and it shakes the dash and gets much worse, it feels like the engine is solid mounted, I took the back mount out and I can put evrything on and no vibration, I put the mount back in and it feels like the motor is solid mounted, I took the front mount out and still felt solid, took the side mount out and still feels solid, the back mount put in the car it vibrates through the whole car, the back mount out its perfect, when I put mounts in I didnt have to pry or anything like that the mounts went in easy, I dont see anything bent.
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Saturday, December 10th, 2011 AT 7:44 PM
Tiny
STUMPED TECH
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  • 8 POSTS
No bent pully checked
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Saturday, December 10th, 2011 AT 7:45 PM
Tiny
STUMPED TECH
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  • 8 POSTS
No trans work
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Saturday, December 10th, 2011 AT 7:47 PM
Tiny
HMAC300
  • MECHANIC
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Just for teh heck of it, try changing your front tires to the back and vice versa. See if that helps. If it does you have a bad tire.
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Saturday, December 10th, 2011 AT 10:34 PM
Tiny
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I have to to think then something is bent like the frame or something like that.
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Saturday, December 10th, 2011 AT 10:35 PM
Tiny
STUMPED TECH
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Yea I was wondering if something got bent myself but im not sure what I was thinking if the frame was bent it would be hard to get the mounts in, I was wondering if something like the toqure converter got damage in the wreck or maybe something inside the transmission, but then I would think if something got bent it would still have a vibration at higher speed and rpm, this think really dont make any sense I can take a floor jack and just barley jack up pressure on the oil pan and it all goes away so any mechanic I talked to says the same thing I said, it must have a bad mount, not true ive changed them all im still pretty sure the load being 70% is to high I just dont know why unless something is bent and the engine is having trouble rotating, but only in gear, because the load capacity is normal in park, so if something is bent slighty in the trans and only rotates while in gear, but a transmission is a big part to just try, I really dont know how im going to find the problem
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Sunday, December 11th, 2011 AT 3:19 PM
Tiny
HMAC300
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If any axle shafts were bent in this wreck or a suspension pieceit would throw things off as well. A good front end man should be able to catch this as the alignmentwold be way off one way or another. Also if a axle shaft was bent it may have bentsomething in the trans orthe shaft itself. I would check the axle on the side that you are jacking up if it goes away on one side. Course that wold be hard to do as you are saying you put pressure on the pan to stop it.
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Monday, December 12th, 2011 AT 12:22 AM
Tiny
STUMPED TECH
  • MEMBER
  • 8 POSTS
The vibration is not coming from the axle the vibration is there when I m idling, the vibration that I feel at 1800 2000, rpm is the same one thats at idle it just travels through the body, the main problem is idle in drive and what dont make any sense is the motor mount being in or out of the car making it be felt through the hole car, the mounts are rubber, and when you put that back mount in it feels solid mounted, I might get to put my computer on the same car today so I will see the load value and compare, if its to high then I have to figure out why
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Monday, December 12th, 2011 AT 12:24 PM
Tiny
HMAC300
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I would have to say it's a trans problem someohow then if it does it at idle. Either something with teh torque converter or stator shaft due to the accident. I have no other suggestions on this.
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Monday, December 12th, 2011 AT 4:53 PM
Tiny
STUMPED TECH
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Ok I hooked my scanner to another honda and the load percentage with lights and ac on is only 40% so i'm thinking toqure converter or something in the trans, as well as you think this so i'm going to check a little deeper tomorrow thanks for the input, I will post on here when I find the problem agian thanks
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Monday, December 12th, 2011 AT 11:14 PM

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