Hi im not gettin any fire to fuel pump, I added a line from the hot wire to the fuel pump and it worked but in the wiring diagram it says that the fuel pump oil pressure switch is next in line, possibly causing it not to fire. In the chevy Haynes Repair Manual its really not giving an accurate position so I don't know where to look exactly. Please help!Where is fuel pump/oil press switch on 93 caprice?
on a gm, the cpu controls the fuel pump. start by checking fuses. after that the cpu turns the pump on in two different scenarios
1 the key was just turned on , the pump will activate for about 5 seconds to regain the pressure lost since thew last drive cycle.
2 if the cpu sees a tach signal with at least 400 rpm the cpu will again activate the fuel pump.
the fuel pump in most cars has a relay in the control circuit, you might want to check that and see if that is not the problem. you will not find an oil pressure switch that controls that pump, the ac yes but not the fuel pump.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment