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runs rough, idles low and stalls

  #1  
Old 02-26-2011, 12:25 AM
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Default runs rough, idles low and stalls

04 chevy k1500 4.9L 146k miles. got truck about 3 months ago and always ran good no problems. washed truck in wash rack at work and let sit 2 hrs and dry off. went to start it and leave started and stalled. ok its just wet... never done that before. ran bad , stalling and skipping down road even 2 days later. has new tune up and good wires and plugs. put dry gas in and injector cleaner. thought might have been bad gas . still stalls idles really low like 400 or 500 rpm and stalls out at stop lights or slowing down. checked it and has no codes . please help
 
  #2  
Old 02-26-2011, 08:18 AM
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Check you throttle body for carbon build-up. They should be cleaned periodically or they will cause your exact symptoms. Use throttle body cleaner and a rag (a toothbrush works well if it is really bad). Also if you want to be real thorough remove the throttle body and clean both sides. I think you meant 4.8 liter right?
 
  #3  
Old 04-03-2011, 10:34 PM
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Sounds kinda like your catylytic converter is busted up and is clogging your exhaust. Cut that rattle trap out and weld in some pipe!!
 
  #4  
Old 04-03-2011, 10:38 PM
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If the underside of the truck got washed, the water coulda hit the cat with enough force to booger the inside of it up. That would explain why it started actin a fool after gettin it washed
 
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