Posted 13 July 2011 - 08:53 PM
I am trying to find the fuel pressure specs for this 01 Sienna. No one locally can give me a good anwser. I called the dealer but got the run around.
I checked the pressure on the front fuel rail(closest to the radiator). I got 48 psi.
The van idles fine but when you put the engine under load it has hesitation and bogging. If you rap the throttle it boggs. I have noticed the exhaust temps are up I suspect its running lean?
Just acts like vehiles where I have had pumps go bad. But I just dont know.
I thought possible exhaust obstruction so I pulled the pipes lose at the y and still runs the same.
I have 3 codes.
P0330 Knock Sensor 2 Circut)Bank 2)
P1135 Air-Fuel Sensor heater Circut Response Malfunction
P1155 Air-Fuel Heater Circut malfunction
I thougt to try unhooking knock sensors ( I think those are the 2 at the trans end of engine back of intake) but it ran the same.
Any help would be greatly appreciated.
firstname.lastname@example.org 1.3660ft. The Mule 1/8 mile