Do you have your terminology right....The injector relay would be the computer right??? The fuel pump relay could cause that problem!!!! good luck and let me know
My 1991 740 volvo turbo doesnt start specially during the morning.Is it comes with a cold start valve?
Bad injector, head cracking, fuel system restriction, bad injector cups, or fuel pump seals.
One is the Head Temp sensor, other is either a knock sensor, or on the throttle body it's the cold start injector
Have the system checked for trouble codes.
Volvo
Lack of info Hesitation causes: Fuel filter, injector/s dirty, ignition problems are places to start
maybe weak battery or an injector component is defective ( the additional injector that gives extra fuel to start the car )
It can be battery, faulty coolant temperature sensor, faulty cold start injector, malfunctioning fuel system, injector leaking.
who give the signal in the 5th injector to start 1992 Mercedes Benz 190e 2.3
No.
Injector relay failed