'92 has pulsating fuel pressure
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'92 has pulsating fuel pressure
I replaced the fuel pressure regulator since it looked like the original one and I wanted to rule that out. Vacuum line to it looks fine.
However, the condition did not go away. With the ignition key in the "on" position, not even going to start the engine, I hear a pulsating sound in the fuel line
and the pump sounds like it is cycling on and off and as it does that the "Check Engine Soon" light on the dash is cycling on and off with it.
I have a pressure gauge on the fuel rail and the reading cycles between 42 and 46 psi with the ignition key at the "on" position. The engine will only start if I give it part throttle and will not idle.
Black smoke at the exhaust results. With the engine turned off the fuel pressure drops to 30 psi in about 60 minutes.
Not sure what to check next. Fuel pump relay? Pump? Check valve? ECM?
However, the condition did not go away. With the ignition key in the "on" position, not even going to start the engine, I hear a pulsating sound in the fuel line
and the pump sounds like it is cycling on and off and as it does that the "Check Engine Soon" light on the dash is cycling on and off with it.
I have a pressure gauge on the fuel rail and the reading cycles between 42 and 46 psi with the ignition key at the "on" position. The engine will only start if I give it part throttle and will not idle.
Black smoke at the exhaust results. With the engine turned off the fuel pressure drops to 30 psi in about 60 minutes.
Not sure what to check next. Fuel pump relay? Pump? Check valve? ECM?
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Oct 19, 2020 02:25 PM