Lazysquirell
Member
- :
- 2003 protege 5
OK I am at a loss, the fuel pump will not kick on. No prepressure build or when cranking.
car does crank.
things i have check:
all fuses with a test light.
pulled codes none.
checked fuel relay
replaced with one from another car that works, no change, put mine in second car works fine.
can manually activated. (took the top off the relay and can turn it on by grounding it out or physically pressing the solenoid.)
fuel pressure when manually activated relay 60psi at rail.
good fuel volume when manually activated
battery charged.
fuel gauge read 3/4
all dash lights are on
check engine light is on while key is on
no other signs of failure of any thing
pulled back seat to lightly tap on top of pump.(hoping something would flicker or give a sign)
checked fuel relay with another no change
i am lucky i have a second car to compare too, and swap parts.
only thing I have not check is ECU
the car ran great untill threw a rod 265,000 miles
any ideas as to what is causing this. the fuel relay looks like this
a b c
-- -- --
--
d
those represent the blades in the relay
power is in (a) and (c) when the key is on if ground is applied to (d) the relay clicks over and power is sent to (b) turning the pump on.
the control that grounds out fin (d) is not working dose anybody know what and where this is controlled?
at the ECU? I was thinking if this has a fuel pressure switch that is stuck or failed from sitting. is there a pressure sensor that tells the pump when to kick on and off?
or any other ideas as to what might be the cause?
Thanks in advance
car does crank.
things i have check:
all fuses with a test light.
pulled codes none.
checked fuel relay
replaced with one from another car that works, no change, put mine in second car works fine.
can manually activated. (took the top off the relay and can turn it on by grounding it out or physically pressing the solenoid.)
fuel pressure when manually activated relay 60psi at rail.
good fuel volume when manually activated
battery charged.
fuel gauge read 3/4
all dash lights are on
check engine light is on while key is on
no other signs of failure of any thing
pulled back seat to lightly tap on top of pump.(hoping something would flicker or give a sign)
checked fuel relay with another no change
i am lucky i have a second car to compare too, and swap parts.
only thing I have not check is ECU
the car ran great untill threw a rod 265,000 miles
any ideas as to what is causing this. the fuel relay looks like this
a b c
-- -- --
--
d
those represent the blades in the relay
power is in (a) and (c) when the key is on if ground is applied to (d) the relay clicks over and power is sent to (b) turning the pump on.
the control that grounds out fin (d) is not working dose anybody know what and where this is controlled?
at the ECU? I was thinking if this has a fuel pressure switch that is stuck or failed from sitting. is there a pressure sensor that tells the pump when to kick on and off?
or any other ideas as to what might be the cause?
Thanks in advance