Rough idle SOLVED!

[SteveLG]

Got a '94 Ram 1500 5.9 Magnum. Runs so rough the dash rattles. Changed plugs, wires, cap and rotor, checked ignition coil for spark, checked the pickup coil with multimeter, shows working good, fuel injectors sound like they're working good and got lots of fuel spray out of the rail. Any ideas what else it could be SOLVED! Harmonic balancer seperated. New one ordered. Thanks for looking!

 

[1999 White C5 Coupe]

Got a '94 Ram 1500 5.9 Magnum. Runs so rough the dash rattles. Changed plugs, wires, cap and rotor, checked ignition coil for spark, checked the pickup coil with multimeter, shows working good, fuel injectors sound like they're working good and got lots of fuel spray out of the rail. Any ideas what else it could be

Did you clean the inside of the throttle body?

Did you check all vacuum lines for leaks (especially at the ends where they connect to metal lines)?

Did you check the engine air filter?

 

[SteveLG]

Yeah i did. Just found out the problem. The Harmonic balancer is wobbling. Thanks for the reply!

 

[Grams]

You could “edit” your original post… to add the comment “Solved” to the end of the thread-title.

 

[Wild one]

Yeah i did. Just found out the problem. The Harmonic balancer is wobbling. Thanks for the reply!

Chrysler / Mopars have had harmonic balancer issues since the dawn of time,and they still haven't fixed them.
It's very common on the car 6.4's and Hellcat 6.2's to have the balancer come completely apart,and quite often take out the rad when it self destructs