odd starting issue

[1quickchic]

Ok looking for an opinion on this, as I'm narrowing down the issue that is at cause
13 frs starts sometimes, then it doesn't, just cranks(engine spinning) nothing
auto car no clutch switch, when it doesn't start can unbolt the 2 grounds in the back on the block and reconnect them and it'll start run etc., then after it sits it repeats.
have added grounds to the di ecu, and to the block
have cleaned the grounds
and cleaned the battery
imob isn't triggering and no key symbol issues
mech fuel pump replace, in tank pump replaced
battery is new, and holding charge, while running it drives fine
it has acted a couple times like its cutting out (losing fuel)
but like said after the reset it if fine again
im leaning towards bad di ecu or main ecu
has no codes i can scan it it when it happens and has nada

[FR-S2GT86]

Originally Posted by 1quickchic

Ok looking for an opinion on this, as I'm narrowing down the issue that is at cause
13 frs starts sometimes, then it doesn't, just cranks(engine spinning) nothing
auto car no clutch switch, when it doesn't start can unbolt the 2 grounds in the back on the block and reconnect them and it'll start run etc., then after it sits it repeats.
have added grounds to the di ecu, and to the block
have cleaned the grounds
and cleaned the battery
imob isn't triggering and no key symbol issues
mech fuel pump replace, in tank pump replaced
battery is new, and holding charge, while running it drives fine
it has acted a couple times like its cutting out (losing fuel)
but like said after the reset it if fine again
im leaning towards bad di ecu or main ecu
has no codes i can scan it it when it happens and has nada

When it doesn't start, and before you crank, are you listening for the fuel pump? It makes a distinct whirring noise when you first turn the key to the ON position until it builds up pressure and shuts off. Then, after you start the engine, the pump will begin to run again.

You say that you have already replaced the fuel pump, but did you also replace the fuel pump RELAY? It is not uncommon for relay contacts to start to fail intermittently.

[1quickchic]

Fuel pump does run

[FR-S2GT86]

Originally Posted by 1quickchic

Fuel pump does run

But......does it run EVERY time? And did you try replacing the fuel pump RELAY?

[1quickchic]

Originally Posted by FR-S2GT86

But......does it run EVERY time? And did you try replacing the fuel pump RELAY?

yes it runs every time, I'm gonna try the relay today though the pump has always ran and I am showing pressure. also going swap the di computer as i am suspecting its the issue at this point
tech stream didn't give anything conclusive