E 500 (124.036) V8-5.0L (119.974) (1994)
LH-SFI Variable Reference Resistor: Service and Repair
LH-SFI Variable Reference Resistor Modified
Standard production breakpoints/Modifications/New features
As of 06 91 color-coded variable reference resistors have been installed. Models:
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With TWC green variable reference resistor
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Without TWC white variable reference resistor (USA California version does not have a variable reference resistor)
NOTE: On models with TWC and national version (J) it is not permitted to install a white variable reference resistor otherwise the secondary air
injection pump will run constantly and the air pump may be damaged as a result.