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1993 Chevrolet C2500 Silverado 5.7L Excessive Emissions, Poor Idle Quality, Surge, Stall, MIL Lamp on
Posted to GM Driveability on 10/26/2009 12 Replies

checking this vehicle out i found the engine vacuum will drop way low to 5 inchs hg and thin jump back up when this happens the data list shows the ecm is driving engine way lean the intergrator is showing under 90 and been as low as 70 and block learn is show...

12 Replies Received (View Replies)

  Related Documents & Media  1993 Chevrolet C2500 Silverado

 
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet C2500 Silverado

VIN 1GCGC29K2P
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / throttle body
Emissionsus federal emissions
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Stall, MIL Lamp On
OccursHot, Cruise, Intermittently
Misc.Ext Cap Pickup

Trouble Codes

45rich exhaust
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet C2500 Silverado

VIN 1GCGC29K2P
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / throttle body
Emissionsus federal emissions
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Stall, MIL Lamp On
OccursHot, Cruise, Intermittently
Misc.Ext Cap Pickup

Trouble Codes

45rich exhaust