got a smoking deal off craigslist
99 dodge ram sport 1500 ext cab 4x4 5.9 $940
Needs a crap ton of work
has a knock has multiple random misfires and a speed shaft sensor code

New to dodges dont know if ill keep it and sell my chevy or sell it
My question is what could cause such severe misfires I have new wires cap rotor and plugs seafoam and oil change stuff now just havent done anything yet

 

how many miles on her ??

could be multiple of things either mixed firing order,cracked heads,leaking plenum bad pcm

 

plenum....have compression checked as well

 

i checked compression on the right bank front to back it was 45psi-130psi-0-55psi

I pretty much stopped there and started hunting for a used long block

Think i found a couple good canidates

time to start searching on here for tech info

 

Take the time to take the heads off. It is possible that the heads are cracked.

How many miles on it?

 

its got 220k plus
And the guy said its been misfiring and driving like that for years
Ill pull the heads cause i have to pull the engine as a core any way and see whats under it
from what i was seeing rebuilds get pretty pricey on the 5.9's and there hard to come by at the auto wreckers

 

Might want to consider checking the plenum for leaks. That could be causing the mifiring.

Overall that's a great looking truck for 950 bones. Great find!