2003 Dodge Ram Van 3500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Dodge Ram Van 3500

2003 Dodge Ram Van 3500 Problems

The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops.  There is also a revised vacuum check valve available to address this concern.

Some vehicles may exhibit one or more of the following: Spark knock complaints when the vehicle is under load, various single cylinder misfire, and surge in 4th gear (around 45 mph). Our technicians tell us that rerouting the coil and spark plug wires to minimize induction effects will commonly correct this condition. If wires must cross during the reroute procedure, they must cross at a 90 degree angle.

On 3.9L V6 and 5.9L V8 engines, the intake manifold gasket may leak and cause increased oil consumption and a spark knock during acceleration; the gasket should be replaced.

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2003 Dodge Ram Van 3500 Questions

2003 dodge w/ 5.9 cummins. oil leaks from crankcase breather where it goes into valve cover. It has new breather and o ring. Has 385000 miles very well maintained. No problems with performance runs good no lack of power.No pressure when oil filler cap taken off to indicate broken ring etc.Any inf...

I hear a hi pitched whine when I accelerate WITH THE AIR CONDITIONING ON, then rises in pitch and fades in volume.
It stops when I turn AC off. What are the most likely culprits?

Thanks a million

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