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detailed idea related to your issue,hope it help you troubleshoot your issue considering the probable factors behind your issue :-
have someone inspect the belts, if they are cracked/brittle, replace them. if the belts are in good condition pay someone to replace the entire tensioner, not just the tensioner pulley.
normal ,it could be as simple as yes old battery,but when you are dealing with two batterys charging you must have a deisel motor and their is a alternator that could be over charging or bad diode.if voltage regulator was the prob . you would have prob. whith new battery also
Remove your air cleaner and anything else that is in your way. The EGR valve is the mushroom looking thing on top of your intake manifold,or the top of the engine. Remove the vacuum hose and the two bolts. be sure to replace the gasket that comes with the new one.
Locate the EGR valve on top of the engine.You may have to remove aircleaner ect.It is the round thing that looks like a mushroom. It has a vacuum hose going to it, remove that,take out two bolts and lift it off. Be sure to replace the gasket that should come with the new one. Install it in the reverse order and ta da, You'll look like a genius.
If it is like the rest of the industry, you have a cable that you unwind with your tire wrench. The cable is usually rusted badly and you need to spray it with penetrating oil and pry on the isdes of the itre with long screwdrivers or breaker bars. If you cna get it to start unwinding, you can lift up and pull down hard on the spare to get it to break the cable loose. If you can get enough looseness you might be able to pry the center bar in the middle of the spare sidways and slip it through the opeoning in the wheel. Or cut the cable if you can get access, then replace it.
