What is and how to go about fixing Trouble Code P1443 & P1445.

Customer Concern: If you accelerate hard it cuts out. If you ease into it, it works. P0037. P0057. P0102. P1440. P1443. Tests/Procedures: 1. All of these components are on the same fuse, 10A EFI #2 in the engine compartment fuse box. Vehicle Application: 2005 Sequoia 4.7 Customer Concern: When started cold, there is a noise like a small jet engine from under the hood; it only lasts about 5 minutes. Found code P1445, this code is for the Bank 2 Secondary Air Injection System Switching Valve No. 2 stuck closed. Found that the Air injection system pump under the intake manifold is full of sand. Tests/Procedures: 1. Before the intake manifold was taken off, there is an Air injection system check that can be performed with the scan tester. The test can only be performed 4 times per trip cycle.

These codes are referring to an evaporative system malfunction. Most of the time what happens is that by overfilling the gastank the fuel travels to the carbon canister . There are small fragments of carbon travel into the evaporative purge valve where the fragments makes the valve stay open. Thisway your computes gets a signal for a faulty valve and and leaks in the EVAP system. More likely the evap purge valve needs to be replace and the vacuum line cleaned .Possible canister needs to be replaced to. These stands if no noise heard from engine.

Evaporative Emission system problems are difficult for anyone to diagnose/test and repair themselves at home. Some evaporative diagnosis requires a scan tool to bi-directionally control solenoids to seal off and open and test for leaks. Another useful tool is a machine that generates an inert gas/smoke that when the system is sealed off, if there are any leaks the smoke "show up" where they are. Also some faults can be intermittent and when the codes are erased the self test procedures your computer uses to test the system can take a week or two to self complete as a certain specific drive procedure has to be performed. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online