Dodge Ram 1500 Problems
While the Dodge Ram 1500 is a robust and reliable vehicle occasions do arise when an owner comes up against a problem which needs a solution.
Read about some difficulties encountered and the answers which Experts have given.
How to troubleshoot a Dodge Ram 1500 which fluctuates when idling and displays no codes?This is typical of a worn out throttle position sensor which must to be replaced. A worn sensor begins to signal erratic little voltage spikes, which the engine controller interprets as intermittent opening of the throttle, when really that is not the case. The engine responds by rising with every spike then dropping again to create an rpm fluctuation. This fluctuation may also happen when the car is being driven, and the TCM responds to every voltage spike with a sudden surge of 200-300 rpm. If the sensor is bad the voltage will fluctuate even when the throttle is closed. This can be checked with the help of a fast voltmeter or a lab scope. A bad sensor will need to be replaced, a job not too difficult to do.
What is the problem on a Dodge Ram 1500 which dies at around 3500 rpm?The problem could be due to a clogged exhaust, a problem experienced with the whole truck line during the mid to late 90s. The cause was traced to the catalytic converter which tended to break up and constrict free exhaust flow. This can be checked by firmly thumping the cat with a soft mallet. There could be other reasons for the problem but the cat would be the first place to look.
Why does a Dodge Ram 1500 die while driving but the check engine light does not come on?Generally there are three reasons why this happens:
• The crank shaft position sensor is going bad
• The cam shaft position sensor is going bad
• The engine computer or PCM is failing.
Any of these could kill the engine when it warms up. The way to identify which exactly is at fault is to have the vehicle scanned for trouble codes. Once this is known the faulty sensor could be replaced. But if no codes are displayed then the PCM might need to be replaced.
Why does a Dodge Ram 1500 engine start alright then die and refuse to start again?First check if the fuel pressure is OK. If it is, then the computer will need to be checked. With the key on, check the reference voltages to the cam and crank sensors and the tps. If the voltages are good then check that the ASD relay engages properly when the engine is being started, and that power is reaching all coils and injectors at the cranking stage. If there is no power, and the ASD relay does not engage, then the problem could be due to a bad crank or cam sensor. There might also be an issue with the valve timing which will need to be examined.
Why is a Dodge Ram 1500 battery not charging when both battery and alternator are new?In most cases where the battery and alternator have been replaced and the battery still does not charge, the problem is with a faulty PCM. The PCM entirely regulates charging and if this is not happening the PCM is suspect. The only way to confirm this conclusively is by hooking the engine to a scanner.
When up against a problem on a Dodge Ram 1500 the best friend you have is an Expert. Any solution from an Expert is backed by years of hands-on experience and studied knowledge.