FCNighmare

Hey, i have a 91 with no mods, NA coupe. Dealing with an Over Fueling issue, my beast is literally dumping fuel to the point its dripping from the exhaust. i have tried UN flooding it but have come to a conclusion that it is Flooding it self to the Extreme!

Checked- Injectors, all between 12-16Ohms
Checked for leaks in Vacuum lines
Air meter- Reading correct Ohms both closed and open
TPS- Both reading correct, adjusted slightly to be within spec off100ohms
Replaced Spark Plugs, wires. Started twice ran for a bit but running Very rich (with heavy smoke)

While I cannot check Pressure sensor as per manual suggests i found it has 5v with key on and No pressure applied. i have tried Manually Blowing and sucking and does not change Voltage in the slightest.

Does any one know what a N350, 0Z26, E1T12272 Pressure Sensor with Key On engine Off voltage will be?

Any Input will be greatly Appreciated as i have had it in my garage for some time, don't have to many sources or parts resources to try things. Thanks

Aaron Cake

iTrader: (1)

Sounds like an injector may have failed open. Isolate it to the appropriate rotor by looking at the spark plugs, and then pressurize the fuel system using the test connector while you hold the injectors in the rail outside of the intake/block. Whichever injector sprays is your problem.

calpatriot

All the sensor voltage specs are listed in a table in ch 4 of the online FSM.

look especially at the water thermo sensor voltage

FCNighmare

Thanks for the Response Guys

By grounding the Single Green Test connector and Key On? When i pull the plugs Both L1 and L2 are Blackened by only running for 10 min max, and soaked in fuel.

Yeah the only Spec listed is with 100mgHG pressure manually applied to the pressure sensor and i do not have the tooling to do that.

I recently changed the water pump, you mentioned the thermo sensor This is the one behind the water pump correct? Can this effect fueling that much?

RotaryRocket88

iTrader: (7)

The fuel pump test connector is a yellow plug on the passenger shock tower. The green one you mentioned is the initial set coupler, which is to disable the ECU while setting the idle.

The water temp sensor is the one on the water pump housing, and the ECU uses it for fuel corrections.