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2005 Chevy Silverado Engine sputters

Tiny
BTHOOD
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 63,000 MILES
I do not have a MIL on my scan nor do I have a pending trouble codes. It does die and is sometimes hard to restart. I was wondering what is the reference voltage for the tps? I would like to back probe the sensor, but I am unsure what the correct voltage should be.
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Tuesday, May 6th, 2008 AT 8:18 PM

1 Reply

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
The reference voltage is 12 volts, however the voltage you measure to see if the tps is good is around 5 volts. It will go from 0 to 5 volts (smoothly) as the throttle is opened and closed--I think it is the blue wire.
A bad tps will give you a trouble code--Check the fuel pressure and run some fuel system cleaner with tectron in it. Your engine is famous for a factory defect that causes clogged fuel injectors. Also, make sure that there are no vaccume leaks.
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Wednesday, May 7th, 2008 AT 5:21 AM

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