GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

truck slows down at 2-3 shift

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Old 03-08-2005 | 11:48 PM
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Shouldn't the Cats throw a code if they go bad? How many mile does the fuel filter have on it? When I changed mine it made a big difference, pulled much harder in the upper RPM's. When the cats blewout and clogged in my dads jeep, I noticed before I got to 3rd, it had good throttle response but just cut out if the rpms went up.
Old 03-09-2005 | 06:09 AM
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Hey Mike... fuel filter is the cheapest, easiest thing to try on your own. Can't hurt to do it, if it still acts up try something else.
Old 03-09-2005 | 04:20 PM
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Originally Posted by JERRY2500
Trq. management is killing it.
that is what i thought
Old 03-09-2005 | 04:24 PM
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Originally Posted by Soquel
Shouldn't the Cats throw a code if they go bad? How many mile does the fuel filter have on it? When I changed mine it made a big difference, pulled much harder in the upper RPM's. When the cats blewout and clogged in my dads jeep, I noticed before I got to 3rd, it had good throttle response but just cut out if the rpms went up.

fuel filter has about 20,000
Old 03-09-2005 | 04:25 PM
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Originally Posted by 99FireTA
Hey Mike... fuel filter is the cheapest, easiest thing to try on your own. Can't hurt to do it, if it still acts up try something else.

i have one bought already. just waiting for a warm day around here
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