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Originally Posted by roadtoad
Do the modern diesels lose power to brakes and steering if the engine stops ??
I did 200k in an '85 Chev 6.2, and because brakes & steering ran off the vacuum pump, dealing with a winding 3500' climb and descent every day got really nervous after the first time I lost power going down San Marcos Pass (Blood Hill), and learned I only had what was left in the booster to get it stopped.. As it aged, it also got harder to start because there were so many electrical parts and connections involved, and those that failed always seemed the hardest to see or reach.
I've learned my Titan 4x is fine for Cat trails and modest obstacles, but its compromise ground clearance, a wife who loves it (and the rider on my insurance) makes further testing of the off-road envelope something I'll just read about.
That said, a stakeside aluminum flatbed 4x4 diesel 1-ton dually with underhung boxes is still what I'd want for getting to broken tracks with air tools, welder, and heavy parts, and that's why I'd like to know if the new ones will stop and steer if the engine quits.
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A much larger vacuum canister would help with vacuum worries. I guess Chevy did not have the foresight to see this in 85.
The exhaust brakes (jake brakes) can really help on the diesel also.