I have a mo itor mpi 441 ivehave done evrything go clean test and regrprogrsmed it all and everytime i go to turn it back onit just click a couple seconds after it furn back on why is ghat

can you check to see if power is applied to pump?

What is a mpi 441?

problem mpi
have it tested
run the fault codes as there may be a sensor problem that controls the ECM which works the MPI

Try a new relay.

which engine?
i roll dice 1.0L G10. Suzuki
(25-33 psi)
depends on engine, and test done.
the key pressure and running pressure
the fuel pressure regulator does this.
and leak down test.
the TBI system and MPI work different. the FP reg is quite different
ill not guess what is there. until you say, what engine and EFI
it runs.

the chart below is a start.
its the running pressure i think.
when i do EFI, i do all 5+ tests in the book (FSM)
fuel pressure , run /non run
leak down test.
shut tests.
and the MPI balance test.
but that is how I do it, 100% not just 1 .




line up, of engines.
1.0 L LP2 I3 suz, G10 actual 25-31 PSI

1.3 L L72 I4

1.3 L LY8 16-valve I4

92 kick. (there is no cylinder 5, sorry) it's a 4 banger. all are. that year.
must be the G16b engine. 16valve MPI engine, 1.6Liters.
open ignition?
on this car, the injectors fire about 3 to 5 milliseconds at idle.
3/1000'th of a second, only.
if they stick on, that is caused by the following
why not connect a NOID lamp to each feed wire to injector
and see what it is doing.??????
http://www.fixkick.com/INJECTORS/injectors.html#NOID
1: injector leaks.
2: fuel pressure way over 60psi and inject can hold it back.
3: ECU is stuck , bad injectors driver in ECU shorted.
in case 3 the noid lamp glows key on., steady.
4: the FSM stated injector balance test will fail.
5: the FSM stated injector leak down test fill fail.

these tests are the same for all MPI based engines.

http://www.fixkick.com/INJECTORS/injectors.html

connect noid,
key on,
the noid that glows, shows what ECU line is stuck low.
stuck low can be , bad wire or bad ECU, only.

if the noid test passes.
that is.
not stuck on
and as you crank the lamp flashes same on all 4 MPI harness connectors (injector feeds) then the electric side is good.
and the fuel side is bad.
if key on fuel pressure is near 30psi (see pump page same site)
then the injector is bad,
see link for pro $20 cleaning company.

have a load test done on the battery as it may have a bad cell. clean the battery terminals and posts to shiny clean ad ensure that they are tight and the leads are in good condition.

Clean the Battery, Charge your Battery and if it dies, then it is your ALTERNATOR if the Connections are CLEAN

Hi there:
This indicates that a part of the EVAP control system is no longer functioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.



I suggest replacing the gas cap with preferably one from the Nissan dealer, or OEM equivalent, then clear these codes by disconnecting the negative battery cable for about a minute then drive it normally; if the codes come back, this may take a couple of days, you most likely have to have the system tested for leaks.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.


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Check your EGR valve. This is the same problem that I have had in the past, and it's been the EGR valve everytime.