Help!!!! Truck Falling Apart
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Joined: May 2005
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From: Katy, TX off north Mason Road.
My 2 cent worth.
Both of my 1st Gen Cummins trucks NEVER warmed up while idling. Even the defroster didn't work. There was no warm coolant.
Now the DMax thing is YEARS ahead. They have programmed a high idle into them to heat them up.
My brother had a 01 Powerstroke. Once started, after about 30 seconds, the flapper about 6" behind the turbo in the exhaust piping closed. This added back pressure and raised cylinder temps, to warm the truck up. Yes, the idle also increased.
I can see low combustion temps being a particular hazard. When a competition diesel starts up and idles, there is a lot of white smoke. Consistent with low combustion temps, there is a certain amount of fuel escaping. So, if idling for a long time below 1000 rpms (the very least), a cylinder wash down can happen.
I have let my trucks idle while I ran into the store to get a few items. 30 mins later, there was not a lot of heat in the coolant left. Both of these trucks had optimal working cooling systems.
Now adding a brick to the pedal and raising the RPMs did the trick in sub-zero weather. 5 mins of idling and a heavily frosted windshield wasn't heavily frosted anymore.
Just my $.02 worth.
Both of my 1st Gen Cummins trucks NEVER warmed up while idling. Even the defroster didn't work. There was no warm coolant.
Now the DMax thing is YEARS ahead. They have programmed a high idle into them to heat them up.
My brother had a 01 Powerstroke. Once started, after about 30 seconds, the flapper about 6" behind the turbo in the exhaust piping closed. This added back pressure and raised cylinder temps, to warm the truck up. Yes, the idle also increased.
I can see low combustion temps being a particular hazard. When a competition diesel starts up and idles, there is a lot of white smoke. Consistent with low combustion temps, there is a certain amount of fuel escaping. So, if idling for a long time below 1000 rpms (the very least), a cylinder wash down can happen.
I have let my trucks idle while I ran into the store to get a few items. 30 mins later, there was not a lot of heat in the coolant left. Both of these trucks had optimal working cooling systems.
Now adding a brick to the pedal and raising the RPMs did the trick in sub-zero weather. 5 mins of idling and a heavily frosted windshield wasn't heavily frosted anymore.
Just my $.02 worth.
The old dodge though has electric fans which greatly aid in warm up. They kick on at 185*. Takes about 20-30 minutes idling before they come on in the winter. (houston "winter" that is) Every since putting the 4 hole DDP4's in I get a slight white haze at idle, till it warms up. Then its clean.
Like most heavy equipment, when it sits for too long it runs dirty till you work it and put a load on it. Then it runs like a champ! The 4bt in our loader was bad about white smoke when its sat even a few days. But once its run awhile, or run every day, its clean.
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