04 v10 ex snorting bull sound 2 seconds after start
#16
Join Date: Oct 2006
Location: chicago northwest suburbs
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Mine has also done this since I`ve owned it (with 17k miles) I`ve narrowed it down to either the A/C compressor kicking on for a split second at startup or it`s the ABS HCU (Hydraulic Control Unit) doing it`s test run. mine also only does it after sitting for awhile (days) and is also intermittent so it is very hard to figure it out! Like Joe says she hasn`t puked anything up yet, so I`m not worried.
#17
I was going to say "I think it is the ABS system 'priming'" but "1 excursion camper" beat me to it! I noticed it is definitely from the drivers side one day when the key had been on for two seconds but the engine was off. Before I had heard it while the engine was cranking so it threw me off. It seems like the excursion has to sit for 24+ hours for the system pressure to bleed down enough to require a 'prime'.
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