1998 Zr2 Oil Pressure Switch Loc.

[GR8wht2000GMC]

98 ZR2 oil pressure/fuel pump switch

 

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Is this all in the oil press. sending unit (behind the distributor) or is there a separate switch that kills the pump voltage on low pressure? My daughters truck runs super for 10 miles, then every time you get on it we lose pump power. I've already replaced pump, and upgraded CSFI to MPI spider. This switch has to be the perpetrator. Also oil pressure on mechanical is steady at 38-45 psi. Thanks in advance for any help.

[crankshop1000]

98 ZR2 oil pressure/fuel pump switch

 

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Is this all in the oil press. sending unit (behind the distributor) or is there a separate switch that kills the pump voltage on low pressure? My daughters truck runs super for 10 miles, then every time you get on it we lose pump power. I've already replaced pump, and upgraded CSFI to MPI spider. This switch has to be the perpetrator. Also oil pressure on mechanical is steady at 38-45 psi. Thanks in advance for any help.

 

It's all in one. You can test it by unplugging it and driving the Blazer.