Hey what's up guys, Im new to the forum here.
So here's my dilemma. I have a 1986 GT 5.0 That keeps shutting off. You start the car up, it runs fine, sometimes for a few minutes, sometimes for a few seconds. Sometimes it will shut off on its own, sometimes it will happen if you press the throttle. RPMs will drop and the engine will shut off, just as if you had pulled the key out. Whats weird though is AFTER it does this every time, I hear the fuel pump prime/ go through its cycle- it makes the whining noise.
THEN if i try to start the car back up, I have to pull the key out, re-prime the fuel pump, and then it will start. If I dont, it will just crank and not fire up. I have 40psi fuel pressure, so it's definitely getting fuel to the engine, why it dies just confuses me though.
ALSO this is another goofy thing.. If there's no key in the ignition, and i turn the parking lights on, this will cause the fuel pump to prime. WITH THE PARKING LIGHTS. Then the fuel pump usually floods the engine after this.. So the fuel pumps gotta be shorting on something right? Or maybe i have a loose/bad ground somewhere? This whole thing confuses me, so any help/advice is appreciated... Just wanna hear if anyones had the same/similar issue..
it has new:
battery/ ground cables
spark plugs /wires
cap and rotor
coil pack
tfi module
throttle body
IAC Valve
Throttle position sensor
o2 Sensors
The problem started before this stuff was replaced though.
Thanks in advance -Trent
So here's my dilemma. I have a 1986 GT 5.0 That keeps shutting off. You start the car up, it runs fine, sometimes for a few minutes, sometimes for a few seconds. Sometimes it will shut off on its own, sometimes it will happen if you press the throttle. RPMs will drop and the engine will shut off, just as if you had pulled the key out. Whats weird though is AFTER it does this every time, I hear the fuel pump prime/ go through its cycle- it makes the whining noise.
THEN if i try to start the car back up, I have to pull the key out, re-prime the fuel pump, and then it will start. If I dont, it will just crank and not fire up. I have 40psi fuel pressure, so it's definitely getting fuel to the engine, why it dies just confuses me though.
ALSO this is another goofy thing.. If there's no key in the ignition, and i turn the parking lights on, this will cause the fuel pump to prime. WITH THE PARKING LIGHTS. Then the fuel pump usually floods the engine after this.. So the fuel pumps gotta be shorting on something right? Or maybe i have a loose/bad ground somewhere? This whole thing confuses me, so any help/advice is appreciated... Just wanna hear if anyones had the same/similar issue..
it has new:
battery/ ground cables
spark plugs /wires
cap and rotor
coil pack
tfi module
throttle body
IAC Valve
Throttle position sensor
o2 Sensors
The problem started before this stuff was replaced though.
Thanks in advance -Trent
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