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won't rev up

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Old Sep 17, 2003 | 08:45 PM
  #1  
bigbigmattmatt's Avatar
bigbigmattmatt
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Unhappy won't rev up

I have a 97 psd and when I first start it up in the mornings or after it sits 3 or 4 hrs it starts easy but when you try to drive it bogs and won't go above 2000 rpm. If I let it idle for 15 to 20 minutes first it runs just fine. Does anyone know what this might be?
 
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Old Sep 18, 2003 | 08:00 AM
  #2  
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powerstroker250
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won't rev up

Sounds like the exhaust backpressure valve may be sticking closed.
 
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Old Sep 19, 2003 | 11:20 PM
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PwerStroke99
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won't rev up

I had this same problem when i first bought my truck used last year. I have since put a new 4" exhaust on it and really havent had a problem. I think it happened ostly in the winter, so that might have been it too. Havent been thru a winter with the new exhaust, but i agree with Powerstroker250. Just let it idle and warm up and it will be just fine!
 
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Old Sep 21, 2003 | 09:18 PM
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won't rev up

it does it when its 95 outside guys. it shouldn't have to warm up for 30 minutes....should it?????
 
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