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The N75 valve located on the bulkhead is a common problem on these cars. The N75 valve controls the turbo variable guide vanes. It is located on the bulkhead next to the egr valve controller. These 2 components are the same part, so try interchanging them to see if the problem disapears. Good luck
code 43 throttle position sensor out of adjustment.not working.if you replace knock sensor and it still spark knocking.make sure the wire connector is not broken.go to higher octane gas .make sure engine timing is correct. also make egr valve is opening when it suppose to it will cause detonation.you will need a scanner to check tps and egr valve.
The egr valve has two sensors. One is an EGR position sensor which is physically attached to the EGR valve. The other sensor is the DPFE (Delta Pressure Feedback EGR) sensor, commonly called the EGR pressure sensor. It's location varies depending on the engine you have. You can fine this sensor by following the vacuum hose on the EGR valve. It will be with in inches of the EGR valve. The sensor will be black (plastic) or silver (metal), have two or three vacuum ports and an electrical connection on it.
The vacuum pressure sensor is a high failure item on fords. Any Ford parts department will have one in stock, as well as some aftermarket parts stores.
The new sensor may not look exactly the same as the old part, but will have all the hook ups as the old one. You may also need to replace the vacuum hose to the sensor as well
Idle compensation is not correct due to one or more of the following; Bad/clogged air filter, vacuum leak, EGR valve, PCV valve, head gasket leaking, bad gas, water in fuel, fouled plugs, 02 sensors need replaced, locked torque converter, etc. These have not been listed in order of expense; just as they come to mind...accordianman