Has anyone with a Jeep Wrangler with the SMI Duo braking system had the SMI engine check valve go bad (will not allow engine vacuum to the Jeep's brake booster while NOT towing)? This is the second one in about a month. SMI's rep. says he has not ever heard of one of their engine check valves going bad and the first time, they bent over backwards to get the new one to me while we have been traveling.
My system was professionally installed, our Jeep is as it came from the factory with no mods. The engine compartment does get pretty warm though, but the system's check valve seems to be installed per manual instructions(teed just to the right of the Jeep's brake booster...the valve is also partially wrapped in wiring wrap as well.
I've been taking the valve out of the vacuum line to get brakes back on the Jeep while not towing and reinstalling it while I'm towing...works fine.
I'll contact SMI Monday, but in the meantime, inquiring mind wants to know...Anyone else have this problem?? And how does this valve know when it's the weekend to go bad?