Nandy
Commander
- Joined
- Apr 10, 2004
- Messages
- 2,145
I need a bit indeep explanation of the fuel system for this vehicle. Very interested in the tank and the peripherals around it. I have a chilton book and it is useless. I could not find much in the net either.
Lets start with the fuel pump.
There are 2 electric connectors there. One is for the fuel sender and the pump. The other connector seems to be some sort of sensor. I am guessing pressure sensor or vacuum sensor.
There are 3 hoses connections. One is for the fuel pump and it is to the extreme right. The one in the middle seems to go to some sort of valve. Im guessing it is meant to shut the fuel system if the suv rolls. The one to the left I cant tell what it does.
The tank has 3 hoses connections. One is the fuel filler hose, the other one is the vent hose. Those 2 are side by side on the back part of the tank. To the front of the tank there is a 1/4 fitting connected to a hose. I have no idea what that one is for.
Can anyone fill the voids, what are those hoses and connections and what are they for? I guess Im trying to understand how does the system works to detect the obd 452 and 453 codes.
My guess is that the system puts some pressure in the tank and that sensor measures it to stay the same for x amount of x. Then it puts vacuum to the tank and the sensor measures it to stay the same for x amount of time. If any of these 2 tests fails so many times then the system turns the light MIL light on. If the test past so many times more then the light is clear....
Anyone?
Lets start with the fuel pump.
There are 2 electric connectors there. One is for the fuel sender and the pump. The other connector seems to be some sort of sensor. I am guessing pressure sensor or vacuum sensor.
There are 3 hoses connections. One is for the fuel pump and it is to the extreme right. The one in the middle seems to go to some sort of valve. Im guessing it is meant to shut the fuel system if the suv rolls. The one to the left I cant tell what it does.
The tank has 3 hoses connections. One is the fuel filler hose, the other one is the vent hose. Those 2 are side by side on the back part of the tank. To the front of the tank there is a 1/4 fitting connected to a hose. I have no idea what that one is for.
Can anyone fill the voids, what are those hoses and connections and what are they for? I guess Im trying to understand how does the system works to detect the obd 452 and 453 codes.
My guess is that the system puts some pressure in the tank and that sensor measures it to stay the same for x amount of x. Then it puts vacuum to the tank and the sensor measures it to stay the same for x amount of time. If any of these 2 tests fails so many times then the system turns the light MIL light on. If the test past so many times more then the light is clear....
Anyone?