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Old 12-09-2010, 04:11 PM
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does this happen to anyone else?

i live in rhode island and my truck has 315000 miles on it. this only happens when its cold. when i start it i leave it running for at least 20mins before i leave with or with block heater. anyway from about 750rpm to allmost 2krpm the truck is reallllllyyy loud and deep. not normal but it has no loss of power or that. and as soon as i go under or above those rpm its fine. then slow down it happens again and it kindda shifts hard. then SOMETIMES if i shut it off and start it up again it goes away then sometimes that dosent work... it seems kinda like one cylinders not firing but i have no clue. it dont forget that this is only when its cold and SOMETIMES. anyone know what/why/how?
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Old 12-12-2010, 02:19 PM
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anyone got this?
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Old 12-12-2010, 03:49 PM
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I'll guess Exhaust Back Pressure Valve, although it usually comes with lack of power. At least look at it, maybe disconnect to eliminate it as the problem or contributing to the problem.

Sorry I'm not smarter.
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Old 12-13-2010, 03:15 PM
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Quote:
Originally Posted by retmotor View Post
I'll guess Exhaust Back Pressure Valve, although it usually comes with lack of power. At least look at it, maybe disconnect to eliminate it as the problem or contributing to the problem.

Sorry I'm not smarter.
lolill try that. its sooo odd. like since i posted this i has happened once. and when i shut the truck off it went away. and i dont think its exhaust related. im pretty sure its motor
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Old 12-14-2010, 11:40 AM
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Mine did that last year when it was cold, I had forgotten about it this year, guess it healed itself.
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Old 12-16-2010, 11:48 AM
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Quote:
Originally Posted by bucwheat View Post
Mine did that last year when it was cold, I had forgotten about it this year, guess it healed itself.
yea this is its second year for mee. its soo odd.
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