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Old 11-30-2012, 12:45 PM
R4NGER R4NGER is offline
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Default Something is burning belt? Seized tensioner?

I recently had the ilder replaced, then the belt. Still has a faint squeak in the cold and figured it was the tensioner. I also recently replaced the camshaft synchronizer and position sensor.

Recently it's started to squeak louder for a long amount of time.

Yesterday I noticed accelerating felt a little bit different. 100 miles later the engine sounded louder. A few miles later on the highway the entire cab had a really bad burning smell. Whenever I get on the highway I can smell it, so I just get off.

The belt was new and had writing on it. Saw the writing in the morning. After the burning smell all the writing is gone, scraped off lol, and the belt is worn. I'm assuming that it's the belt burning. I'm not sure if the louder engine and different acceleration could be from the belt?

I drew marks on all the parts to see if something wasn't moving. The a/c is spinning (didn't turn it on), idler, and alternator. The tensioner mark was in the same place when I stopped the engine, couldn't see it when it was running. It also moves back and forth about a 1/4 inch when it's running. Is there a chance it could've seized? I don't know if that's possible or not.


Sorry for such a long post
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Old 11-30-2012, 12:53 PM
pooleo pooleo is offline
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Default Re: Something is burning belt? Seized tensioner?

could be the clutch is seizing on the A/C pump. The pulley itself free spins, then when the clutch kicks in and grabs. Is it low on A/C causing the pump to kick on off? The pump also kicks on in other settings not just A/C on the control knob.
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Old 11-30-2012, 12:54 PM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Something is burning belt? Seized tensioner?

well if any of the pulleys are seizing, grinding, have bearing issues, or cause something else to burn a little (like the belt), then you will be able to simply feel of each one after it does this again - if it's too hot to touch, then you found it

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Quote:
Originally Posted by pooleo View Post
could be the clutch is seizing on the A/C pump. The pulley itself free spins, then when the clutch kicks in and grabs. Is it low on A/C causing the pump to kick on off? The pump also kicks on in other settings not just A/C on the control knob.
or this!
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Old 11-30-2012, 01:04 PM
R4NGER R4NGER is offline
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Default Re: Something is burning belt? Seized tensioner?

Quote:
Originally Posted by pooleo View Post
could be the clutch is seizing on the A/C pump. The pulley itself free spins, then when the clutch kicks in and grabs. Is it low on A/C causing the pump to kick on off? The pump also kicks on in other settings not just A/C on the control knob.
I didn't know that, thanks!

I never you use the a/c and did not change the direction of the air. I'm pretty sure I had turned the heating up to the maximum speed a fewm miles before. I also sometimes turn it to the blue area because it get's too hot. It just happened last night and I haven't driven it since. I'm going to take it out now and try to figure it out.



Quote:
Originally Posted by robertmcclure View Post
well if any of the pulleys are seizing, grinding, have bearing issues, or cause something else to burn a little (like the belt), then you will be able to simply feel of each one after it does this again - if it's too hot to touch, then you found it
Thanks! That's a great idea.


I'm going to take it out for a spin and see if I can figure it out.
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Old 11-30-2012, 01:05 PM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Something is burning belt? Seized tensioner?

yeah, the a/c cycles using all hvac settings except for dash only & foot only IIRC lol!
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Old 11-30-2012, 04:49 PM
R4NGER R4NGER is offline
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Default Re: Something is burning belt? Seized tensioner?

Quote:
Originally Posted by robertmcclure View Post
yeah, the a/c cycles using all hvac settings except for dash only & foot only IIRC lol!
So if I had it on the face setting and turned it up from the lowest setting to full blast, could that cause it to seize? My heating only works on the lowest or highest setting, I think it's a common problem.

I managed to drive 30 miles home without a problem. When I got back I could touch all the parts and they were hot, just normal. The idler pulley was noticeable hotter than the rest, almost too hot to touch. I accelerated very slow, low rpms.
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Old 12-01-2012, 02:59 PM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Something is burning belt? Seized tensioner?

Quote:
Originally Posted by R4NGER View Post
So if I had it on the face setting and turned it up from the lowest setting to full blast, could that cause it to seize? My heating only works on the lowest or highest setting, I think it's a common problem.
that, i do not know...

Quote:
Originally Posted by R4NGER View Post
I managed to drive 30 miles home without a problem. When I got back I could touch all the parts and they were hot, just normal. The idler pulley was noticeable hotter than the rest, almost too hot to touch. I accelerated very slow, low rpms.
since that idler is getting that hot, definitely inspect it. a new idler pulley is around $20 i think. and it takes like 5 minutes to replace. just need to be able to take the belt off & then use a socket to get the old idler pulley off & the new one back on.

edit:
i re-read your post. so since the back of teh belt (the flat part) is getting the print worn off, then it's either the idler pulley or the tensioner pulley doing that. i son't think anything else touches the back of the belt like that.

and you said that you had a shop replace the ider? i wonder if they actually did, or maybe they put a crappy one on it.
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