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help please: son w/'97 5.7 Vortek, int. power loss

  #1  
Old 02-09-2008, 08:06 PM
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Default help please: son w/'97 5.7 Vortek, int. power loss

Have middle son trying to travel from Western WA state to E. WA state over Cascades. He called and has intermittent trouble with his 1997 1/2 ton Silverado. 208K miles; never much engine work done; new auto trans. 5.7 Vortec. Trouble example: running perfectly on freeway, then looses power...push gas pedal to floor, no power at all, BUT, engine never quits. Then recovers, and runs fine for a while, maybe quite a while, then trouble repeats.

Ring any bells? I hate long distance trouble shooting and not being able to be there to help. I just thought some of you might recognize this as some kind of typical problem with typical fixes.

Thanks,
Dennis


 
  #2  
Old 02-10-2008, 01:10 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

not sure but maybe a cam or crank sensor
 
  #3  
Old 02-10-2008, 02:07 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

Thanks, Vegas. Any tips are a start. And tips are usually only given if there is some reasoning behind it.

Dennis
 
  #4  
Old 02-10-2008, 02:20 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

like u said long distance trouble shooting is tuff, i mean i doubt it, but it could be a start, if those sensors go bad the car usually doesnt start. i mean it can be anything, from a MAF sensor, MAP, BAP, TPS, hell it could be something as simple as a ground.
 
  #5  
Old 02-10-2008, 02:22 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

I have nothing to offer here, except maybe the truck doesn't like being surrounded by Cougar fans?

Woof. *UW*

Is the truck throwing codes? Check engine light coming on? Swing it by an Autozone and have them scan it for free. That may just shed a tiny bit of light in the direction you need to go.
 
  #6  
Old 02-10-2008, 09:39 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

Might be a partially clogged fuel filter, or bad gas.

I agree: "Swing it by an Autozone and have them scan it for free. That may just shed a tiny bit of light in the direction you need to go".
 
  #7  
Old 02-10-2008, 11:44 AM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

no way to know for sure...but if no check engine light..i'd say a fuel pump
 
  #8  
Old 02-10-2008, 12:52 PM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

I would also say fuel pump is a likely canidate
 
  #9  
Old 02-10-2008, 01:02 PM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

my truck did something similar to that and it wound up being the fuel injectors.
 
  #10  
Old 02-10-2008, 01:41 PM
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Default RE: help please: son w/'97 5.7 Vortek, int. power loss

I would say something along the line of the fuel Fuel pump, fuel filter, or fuel injectors.
 

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