Same symptoms, sulfur smell + battery problems on 2001 Durango

2003 durango
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Amazing.....At this very moment in time.....my 2000 silhouette is doing the same thing....if you were unaware.....ventures Montana's and silhouette are from the same mold. Very similar in all aspects. My diagnostics have got to the fuel pump part of suspects....but I have already checked filter, relays, fuses and ignition electronics....my latest suspect is the pressure sensor that monitors the pressure of the gas tank....there is also a pressure sensor on the injector rail I'm suspicious of. I'm going to find out how to place each sensor in "okay ....fuel pump turn on and pump fuel to the throttle body" to check them. In my case....I don't smell any gas after turning the engine over....trying to start it.....sometimes for over an hour....never any gas smell....so I suspect fuel delivery is the problem. The fuel pump has several sensors that control whether or not it needs to run....and pump gas. I can hear my fuel pump run for 2 or3 seconds when I turn the ignition to the on or start positions.testing all of those sensors is my plan of action for this 3 day weekend. Your on track with your work and suspicion of the position sensors......vacuum leaks will follow the sensor checks. Vacuum leaks could cause a couple of sensors to fail too.....I dropped my fuel tank last weekend....and found the fuel pump to be in working condition.....I removed my fuel filter and punched a hole through it for free flow.....to eliminate it from the list...after checking the vacuum angle....I will move to the electronics side.....with the ignition switch first and the transmission position indicator switch following.....I've plugged my trouble code reader in and didn't get any indication of any failed electronic devices......my problem and your problem seem to be very similar, except that I am doing all of my work on the van myself. I will try to keep you informed of my diagnostics through fix it.it would be nice to know how yours is advancing too.....there are a few directions you can progress into.....hope one solves your problem....if not.....there will be more ideas to come....until I solve my problem....good luck to. Us both and onward we go......Nick.ps couldn't spell or grammar check because I'm using my phone to compose....and the typing pad covers the entirescript being typed. Sorry for any problems. Associated

On a vehicle that old, especially with high mileage, the symptoms you describe are fairly typical of a failing head gasket. When head gaskets begin to fail, they will allow water to drip into one or more cylinders, which will burn off as steam when the car is first started. Check to see if you are losing any coolant, however small the amount.
If the vehicle has recently been allowed to overheat, near 100% probability that you will need to have the head gasket replaced.
If by "sulfur smell," you mean a smell of raw gasoline, the problem can also be a sticky startup injector... but less likely than the chance of a bad head gasket.

I think anyone would smell a gas leak when changing oil. Whether he would tell you about it is another matter.

Two ways the the battery was the problem:
1. It was not the right voltage battery installed.
2. It was a faulty battery...which is very possible.
As of right now, you Sonata runs, correct?

Check smog controls. Smell indicates sulfur. Usually smog muffler.

Replace the battery from the smell is caused by a dead cell in the old one

you may have dirty injectors, and the fuel tank additive wont fix it, you need to have a professional pressurized injection cleaning and possibily an intake plenum and throttle body cleaning, if you are not qualified save your self the headaches and take to a reputable shop you trust and have it done professionally.... should curue the problem... also invest in a new fuel filter install...

there is a recall on some of the fuel lines under the hood, they get old and leak.

yes. You just need an honest, qualified mechanic. I'm not saying your last mechanic was not qualified, but any mechanic should know how to search and test for an unintended drain. Sounds like that is what you have.

Go on youtube and watch videos of "unintended, or parasitic drains"-there are hundreds of them. Any mechanic with a good multi-meter should be able to find it pretty quick-within an hour or two.
I wouldn't worry about the AC-your car is too old for it-too easy to have problems with a car that old, although if you have enough money, you can do anything. Just saying it would be expensive. The window problem is not an expensive fix, probably needs a new window motor. yours probably has worn brushes. The rear defroster is easy to troubleshoot with a multi-meter. Keep at it and you will have a good car.