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.
Resources for the Repair and Maintenance of your 1998 Dodge Ram Van 2500
1998 Dodge Ram Van 2500
1998 Dodge Ram Van 2500 Problems
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.
Leak detection pump failure can be caused by the internal diaphragm switch sticking, or in some cases, contamination from debris or carbon particles from vapor canister. If black carbon particles are present in the LDP, replace vapor canister in addition to LDP. The purge solenoid should also be checked for debris or carbon contamination and replaced as necessary. All evap system hoses are subject to cracking and splitting causing leaks, Inspe...
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 the 3.9L V6 and 5.9L V8 the engine oil leaks at the distributor can be misdiagnosed as leaks from the intake manifold seal, oil pan gasket, or rear crankshaft (rear main) seal. A revised distributor is available if oil is found inside the distributor.
1998 Dodge Ram Van 2500 Recalls (Recent)
1998 Dodge Ram Van 2500 Questions and Answers
My vehicle is registering no voltage
on the dashboard. When I had the alternator checked out, it registered ok. I've been told 2 things, go ahead and change out the alternator and that shou...
Where is the PCM located and how hard is it to change
out for a fairly knowledgable home mechanic?
Why is my transmission not shifting into 3rd gear?
dodge ram van 2500, 110,000 mi. 5.2 l engine. At idle and after warm up, Check Gauges light comes on and and oil gauge needle falls to zero. Replaced sensor and tested pressure with manual gauge co...
the van has no codes. If I drop the hood the ehgine revs up the dies-new ignition components have been added but the shut down persists.Can be driven as mucxh as40 miles or as less as 2 then the i...