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Truck has about 80k miles. When I start it up with no throttle I get puff of black smoke and dry soot exiting the tailpipe. After initial puff the exhaust clear but yesterday I wrapped a white towel around exhaust tip and ran it for 3 minutes a idle. The towel came back black and slightly oily...

I have a strange sound that sounds like air coming back thru my air filter when I let off throttle quickly. However it only occurs at very low speeds and low throttle setting, below 20 MPH and only after I complete a pull with my trailer at highway speeds and pull off to frontage road and maybe...

I would like about another 50HP to improve towing when trying to cross Rockies on hot days. Currently I'm down to 25-30 MPH and running hotter than I like by the time I crest at the Eisenhower tunnel on I-70, about 10,000 ft or 5,000 ft higher than Denver. I don't quite understand difference...

I have 2001 with tow package. I get anywhere from a 1 to 2 volt drop at my 5th wheel brake/tail lites when connected, drop dependent on how many lites I turn on. I'm connected into the standard Dodge 7 pin receptacle that came with the tow package. Even when not connected I can measure a slight...

I'm trying to lower my EGTs. I get conflicting opinions on just removing the muffler or removing muffler and resonator. Talking to friends I get different answers on purpose of resonator. Also is it a big contributor to back pressure? One friend said just cutting out the mufler will...

Stock engine with 72,000 miles. Used to get 19. 5 boost, now get 18 psi. I think TDR Issue 47 (which I seem to have misplaced) said normal boost was 20 PSI@ 330 RPM. I'm not sure when boost started declining because I can only check it when towing. I've suspected low lift pump pressure...

Having intermittent problems with radiator overheating in +90 degree weather while pulling. Yesterday when it happend I didn't hear the fan roar up but on next hill (after radiator cooled) I heard it roar and temp was normal. However the hill it overheated on was a long grade but I would guess...

Do any forum members have experience with this setup? I have an ATS triple Lok TC and valve body installed with the stock transmission. Thinking of having ATS install exhaust brake and Commander controller. I tow a pretty heavy rig and had very bad downhill experience in Colorado that I hope...

I know many of you do your own maintenance but I do not. I have a 2001 3500 with auto transmission, about 65,000 miles. 4 wheel drive. SLT + package with heated seats and power everything. Has an ATS Triple Lok TC and valve body but stock transmission. Bought truck new with service contract which...

Dodge, Year 2001, 3500, AT with 4. 10 rear end. 35,000 miles. 4 WD. When towing 5th wheel on long grades I sometimes overheat. Dealer replaced thermostat, no help. Overheating even occurs when outside temp around 58 Degrees. I'm towing between max rated load (20,000 lbs gross) and occasionaly...