I know that it will pollute more, and can damage the kat if is out for long times. but i'm having some problems and i believe it's the EGR. It' a bit oily around the EGR valve, i just removed the electric cable from it. Is it closed now? can it be still open?(I have a 2004 mitsubishi carisma, 1.9diesel engine)
electric cable? you mean the harness EGR connector? for the valve? solenoid? why would you disconnect it? it is a deisel, ok made by renault. Vovlo uses it as well. you should test it. there is probably ohm specs in manual.
The cable you disconnected is not only the control cable. The valve is a mechanical devise and is operated by exhaust pressure. The connection is to inform the Engine Management Computer of the position of the valve as well as a trigger. The valve can be opened by exhaust pressure. As a test ONLY - to identify the cause of your problem, or to eliminate or condemn the EGR valve, you can remove the valve and cut a piece of soda can to block off the port and replace the valve over the metal plate. This will allow you to determine if or not the valve is contributing to your problem. NOTE: Don't allow the plate to remain longer than it takes to perform your test. It can cause serious engine damage, will cause emissions to rise beyond acceptable levels, and it is illegal, punishable by very stiff fines and penalties.
