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Old 07-14-2020, 07:26 PM   #1
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Cool Need Help

I just bought a 1999 TanAm FE 84 passenger. I'm haveing trouble getting over 45mph on the highway or climbing hills it slow way down with it flored
Motor runs good and transmission does good going slow speeds , but once you get to 45 to 50 or go uphill it. Again
what should be my first look? On the highway floored the bus will not go over 45mph, Just shift up and down as it tries to gain speed.
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Old 07-14-2020, 08:18 PM   #2
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What engine, transmission and rear gear ratio does your bus have?
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Old 07-14-2020, 09:00 PM   #3
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Engine DT466
Trans Allison Auto 4 Speed not sure which one.
Not sure on gear ratio
Runs great shifts great just doesn't want to build up speed
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Old 07-14-2020, 10:21 PM   #4
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The first thing I would do is check/change the fuel filter(s) (there may be more than one). This is a *VERY* common poor power issue in diesel engines, and they do need to be changed on a regular basis. They will clog with a batch of bad or"stale" fuel but even during regular use they will eventually fill and need to be replaced. Keep a couple extras on the bus during traveling.
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Old 07-15-2020, 05:18 AM   #5
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there is a tag on the side of the transmission and that will have the model number on it. The rearend may have a tag on it too, not always though.
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Old 07-15-2020, 05:40 AM   #6
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Quote:
Originally Posted by Ronnie View Post
there is a tag on the side of the transmission and that will have the model number on it. The rearend may have a tag on it too, not always though.
I found the rear end tag for my bus in an envelope in the driver's overhead compartment.
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