What happened?
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Registered User
Joined: Sep 2008
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What happened?
Hello all,
I have an 08 2500 ram with a totally stock 6.7 CTD, 6 speed manual and around 10,000 miles on it. It is cold here (around 25 F). When I started the truck this morning, it sounded different. It was noisey, like the exhaust brake was stuck open or something (I had the exhaust brake on at the time). I rolled it up the driveway and on to the street. It went about 30 feet and died. I pulled it over to the side of the road. It started again, with the same extra noise. I got it back into my driveway. It would not go over 1200 RPM, even when floored. No check engine light. The overhead registered "system OK". I shut the truck off. I immediately restarted it, and everything was normal. The truck has driven normally since. Any ideas as to what happened? Thanks in advance for your comments.
I have an 08 2500 ram with a totally stock 6.7 CTD, 6 speed manual and around 10,000 miles on it. It is cold here (around 25 F). When I started the truck this morning, it sounded different. It was noisey, like the exhaust brake was stuck open or something (I had the exhaust brake on at the time). I rolled it up the driveway and on to the street. It went about 30 feet and died. I pulled it over to the side of the road. It started again, with the same extra noise. I got it back into my driveway. It would not go over 1200 RPM, even when floored. No check engine light. The overhead registered "system OK". I shut the truck off. I immediately restarted it, and everything was normal. The truck has driven normally since. Any ideas as to what happened? Thanks in advance for your comments.
Veteran
Joined: Sep 2006
Posts: 382
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From: Erie Pa
On yours, the engine brake comes on when it's very cold outside, to "work" the motor to help it to warm up faster. That sounds to me like what happened.
Another thing is, these are big, heavy, expensive, motors. You should allow a few minutes of warm up time, before driving. It's very hard on the bearings, rings, cam, and turbo to start working it right after cold start. Allow the oil to warm up a bit before taking off.
Another thing is, these are big, heavy, expensive, motors. You should allow a few minutes of warm up time, before driving. It's very hard on the bearings, rings, cam, and turbo to start working it right after cold start. Allow the oil to warm up a bit before taking off.
Amateur
Joined: Nov 2009
Posts: 28
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not sure on the 08's but on the later 5.9's they actually did a flash on the Cummins to prevent it from going over a certain RPM (I think 1800 or so) until coolant temp was up a bit. Too many people not used to the fact that these engines are cold blooded and there is a ton of iron to heat up...
