The altitude is not the problem, I live in Fl. and the thing runs rough, pings and generally stinks. Plus now they are replacing the front main seal at 48,000.
I was going to buy a 2000 dodge 4x4.not any more after these notes on transmission problems...
The high altitude performance problem is easy to fix with some basic aftermarket products. First is an air intake kit. With higher altitudes there is less air. Less air means less power. Addition of an air intake kit, N&N for example, increase airflow into the engine. The more air you get into the engine the more power you get. If you have the money you could look into nitrous ($500+) and/or forced induction ($3000+). Nitrous oxide is a great system for instant power when you need it. Contrary to popular belief nitrous will not damage your engine when it is used properly. Another basic upgrade is the ignition system. NGK or BOSCH Platinum plugs with a set of MAGNICORE wires will give you an increased spark for more power and fuel efficiency. I encountered the same problems in altitudes in excess of 6500 feet before I did some upgrades. The problem quickly disappeared with the addition of an intake, spark plugs and wires. Also look into an aftermarket exhaust system to expel the gasses quickly for additional power and a more aggressive sound. BORLA, GIBSON and FLOWMASTER are some good companies to look into.
I have a 2000 Dodge Ram 1500 with a 5.2L V8 engine. At first the truck ran rough and made a knocking sound like a diesel engine. Then someone told me to try a using high octane fuel. It is about $.20 more, but I have not had noticed any knocking sense.
I bought this truck new and started using the high octane after the the first few months. I also us mobile 1 synthetic oil. I now have 134,000 miles and still as strong as ever. And I am pretty rough on it. I did have to rebuild the transmission at 125,000 miles.
Over all, I would buy another Dodge. But, I hope to get another 134,000 miles out of this one.
I have a 2000 Sport off road with the 5.2L, and have enjoyed the truck, but it is a gas guzzler.
Biggest problem I've had with it was having to rebuild the transmission at 80 000 km's, which I thought was a little pathetic. That being said, I did buy it used, so I'm not sure how hard the first owner drove it.
Anyways, $3500.00 later I had a stronger rebuilt tranny than the original piece of crap Dodge put in it, and now at 152000km I still have had no further problems.