Hi all, So I have a 2001 5.9 R/T with 105k miles. I got the car a few months ago with 101k. I have this horrible rattling sound which I can't seem to figure out. It only happens when I am going uphill and the engine is obliviously under greater load. I picked up a steelman wireless chassis ear (lets you put devices on the chassis and hear them while driving) but still couldn't pin point where the sound is coming from. To me it sounds like its in the front drivers side of the truck. I had 4 devices and I placed 1. on the rear manifold drivers side (nothing) 2. Upper control arm (nothing) 3. I put on the front differential (nothing abormal) 4. Lower control arm (I hear what sounds like worn brakes, when the brake wear bar starts contacting the rotor, but brakes are not worn down), but I don't hear that blasted sound from the video. Sounds like a bolt or something but still can't trace it. Could it be a bearing that I am hearing? Thoughts?

 

do you do you have a lawn mower chasing you? It sounds like maybe something is wrapped around your Driveline to me

 

lol, an angry one at that. Nothing visually below. I have checked and hand shook everything down there. Once I stop going uphill everything is normal (truck has a flowmaster so its a bit annoying).

 

Welcome to the '01 R/T world. I got mine new, only 119,600 miles so far. On your problem, keep at it! Move the microphone thingies all over, even the "I can't imagine it being that." places.

 

Does it stop if you drop it down a gear?

 

Only happens when I am going up the hills and inclines, if I let off the gas it goes away. Cause must have to do with load I'm thinking. I am getting about 12.9 mpg and that is mostly highway. The first thing I did on the truck was swap the oil to 5w-30 mobil 1. When I went to do the oil change at 4k, I checked how much oil I dropped once in the pan. I had burnt close to 2 quarts. Next oil change I put in 10w-30 mobil 1 as recommended. I have been watching my oil its about 1k and I have noticed a slight drop on the dipstick. I will be giving the truck a tune up as I am almost sure the previous idiot gave it terrible maintenance. Already changed the PVC. Just ordered plugs, wires, & rotor.

You guys think this could pinging?

Other thoughts, I have read about an oil leak in the plenum which seems to mostly affect rams but apparently can also affect Durangos.

 

To follow this up, its confirmed pining. I had the plenum oil leak which I have now fixed. I have another thread in the ram section going into more detail. After the plenum was fixed the sound still happened but after switching to 93 octane it went away. Will be attempting to run cooler and copper plugs rather then the new iridiums i installed since they run cooler which is also what causes pining under load.

Anyone with a 5.9, almost guarantee you have a plenum leak. Tell tell signs are pinging also if you do your plugs and 7 & 8 plugs are oilishy especially on threads.

 

1. If you had the intake plenum leak, you probably have carbon deposits forming hot spots in your combustion chambers that cause further pre-ignition. Decarbonize your combustion chambers (Mopar Combustion Chamber Cleaner/Conditioner) and 87 won't ping (unless other problems persist or you run a PCM tune).
2. Autolite 3923 are copper plugs and one range cooler than stock. Colder plugs and a 180 degree thermostat are common methods to lower head temperatures.

 

I'm running NGK 4291/ZFR6F-11 and I believe they are a heat range colder than stock. Paid $18 for the set.

 

Thanks Trevor going to make these changes, trying to find the plug and make sure they are correct since my stock plug on the 5.9 2001 Magnum is Champion RC12LC4. When I did my tune up I put in AUTOLITE XP5224 Iridium's. From all the reading I have done these trucks prefer copper plugs as you mentioned since they take heat away better then any other plugs. The stock plugs on RAM's with 5.9 is RC12YC. Not sure why dodge would have 2 different plugs on what should be the same magnum engines.

I ran seafoam about a week ago (1 in the tank)(1 in via the intake spray type) Didn't have any white smoke come out. I am still running 93 octane for now but want to roll that back to 87 because its expensive as hell lol. I also just picked up some mopar combustion chamber cleaner cans. I found a thread on the jeep forum which does a soak of the piston heads for about 45 minutes. Take the plugs out, spray MCCC in there (one can for all 8 divided evenly). Then take the fluid out by turning the engine manually or sucking it out (Still thinking of a way to suck it out which will be faster). Then it also mentioned running a can with the engine running like seafoam. My only fear is having some carbon break off and getting stuck on the seats of the valves.

I came across this big thread on plugs (lots of info):https://dodgeforum.com/forum/2nd-gen...36-4071-a.html
"Kenne Bell company says they did extensive research and testing on their in-house DynoJet 148C, and recommend the "V" design NGK ZFR5F11 (stock number 2262, resistor inside 4,000 ohms) for non-supercharged, and ZFR6F11 (one heat range cooler) for blown 5.2/5.9 Dodges."