Originally Posted by scr38
Check the system for leaks. Mix up a little dish washing soap and water, and use the solution to check the air line connections for bubbles. There have been problems with the O rings leaking at air line connections.
Thanks for the idea, I'm sure there are leaks but I don't think that's what's causing my intermittent issue. Here's why: I can put a seriously heavy load on the hitch, watch the truck squat and get nothing from the compressor. I can let the truck sit (engine off) with the weight on the hitch, come back and start the engine (wait 3-5 min) and the compressor still won't kick on. And then there's times when it will kick back on.
And, when it works, the system works great. The compressor isn't running constantly (or a lot) like it would with a faster leak that was overheating the compressor (just MHO).
So, I don't think it's a leak that's causing the problem, but if you're sure that it is I'll look into it. Either way I'm sure the O-rings could use replacing at some point but I don't know if it's my main issue.
2005 Armada LE 4x4 Nav - 15MPG - $26/100M
2012 Chevy Volt! Shocking huh?
Averaging $5/100 miles ($4 electricity & $1 gas /100m)
April '12 1,100 miles on 2 gallons of gas and $42/month of electricity
May 17th '12 2,600 miles on 5 gallons of gas and $42/month in juice
June 10th '12 3,700 miles on 7 gallons of gas and $43/month in electricity