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  1. Chevy C/K Truck Forum
    Hi I have a 1998 k2500 Cheyenne with about 305000 miles. It have the 5.7L v8. The issue I am having is that the truck has low oil pressure and idle at a stop. The pressure and idle is fine when you first start the truck but as you go you can the oil pressure drop. It usally drops to around 20...
    1998 5.7 ltr idle speed k2500 low oil pressure
  2. Chevy C/K Truck Forum
    There is something strange with my truck... I have changed out the TBI and replaced the gaskets on it. Replaced the TPS and the IAC... Drives better. When the weather was VERY HOT about a week ago, it would almost die when the RPMs would drop. That was before I changed the those two components...
    idle speed rpms
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