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When my truck gets real hot the oil preasure guage starts bouncing when truck idles as soon as truck is put into park or is reved up a bit it stops bouncing

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You may have a Faulty Oil Pressure Sender.
Here are some reason why your guage is bouncing:

  • Corrosion or faulty electrical connections
  • If the oil pressure gauge is pegged low after the engine is running, or is pegged high after the engine is running, or if there is intermittent illumination of an oil pressure indicator light, the sender could be faulty
You can find the oil sensor on the left hand side near the Oil Filter, as long as you don't hear your lifters ticking and making lots of noise. it's not your oil pump failing. 
Good luck and hope this helps

Posted on Apr 23, 2009

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Posted on Jan 02, 2017

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