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Tim West
Tim West, ASE Certified Technician
Category: Chevy
Satisfied Customers: 4638
Experience:  ASE Certified Service manager of Firestone
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93 Chevy c1500 runing rich and stalls whenput into gear 305, auto.

Customer Question

93 Chevy c1500 runing rich and stalls whenput into gear 305, auto.
Submitted: 7 years ago.
Category: Chevy
Expert:  Tim West replied 7 years ago.
Thanks for visiting
There are a few popular reasons this vehicle can run rich.
Is there a check engine light on? Do you know the codes?
There are several reasons the engine could be running rich:
  • Coolant Temp Sensor
  • Fuel Pressure Regulator
  • Fuel Pump
  • Restricted Return Line
  • o2 sensor
  • MAF sensor
Install a fuel pressure gauge for 12-13 PSI. If the pressure is too high, remove the return line and check for the pressure to drop. If the pressure drops, check for a restricted return line. Check the fuel pressure to hold. If the fuel pressure bleeds off, suspect a fuel pressure regulator. Get back to me.