1nolaguy Posted October 15, 2022 Share Posted October 15, 2022 We have a 2005 Safari Cheetah 40DST with a CAT C7 engine and 6 spd Allison Transmission. I have previously had a few issues with the acceleration not working and the RV belching out black smoke. I was subsequently told the problem was that I was running the exhaust break at low idle. I quit using the exhaust break except in emergencies. Went about 9 months without an issue. A few days ago I experienced an emergency stop on the interstate and used the E. Break. after stopping I turned it off. When traffic started to move again the RV would not move when the engine rev'ed and black smoke bellowed out the exhaust. After shutting down and allowing some time I restarted the engine, idled a while and then drove off with a little black smoke and then all was well. I have since driven about 600 miles with out incident. My questions for you more experienced DP owners: 1) Is this normal? If not, Do I have a defective E. Break or is there another issue? Note: I did not through any codes on my D-Scanguage. I had a full work up following the insolent prior at a Caterpillar Service center and they found nothing to report. Link to comment Share on other sites More sharing options...
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