Fuel Pressure

1998 CHEVROLET BLAZER
169,000 MILES • 6 CYL • 4WD • AUTOMATIC
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RETNIZ11
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  • 2 POSTS
would a bad fuel pressure sensor or regulator (they might be the same thing) cause the engine to slightly hesitate when idling. almost like it isn't firing right. it is idling just above 5000 RPM's. i have replaced the plugs, wires, cap and rotor and it still idles low. my engine light has come on twice with code P0452 but it doesn't stay on.
Jun 28, 2011 at 2:43 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Did you mean 500 rpms??? Clean the throttle-body and idle air control. Check the tps.
Jun 28, 2011 at 2:50 PM
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RETNIZ11
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I am sorry, what is tps?
Jun 28, 2011 at 3:19 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Throttle position sensor.
Jun 28, 2011 at 4:13 PM
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