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Both vvt spool valve gone bad?!?!?!

3K views 4 replies 4 participants last post by  WiiMaster  
#1 ·
Has anyone had both spool valves solenoid go bad at the same time. I got a Dr code for each one. I already change the oil the other thing left is to replace the switch and or valve. Has anyone had this happen before? I did tested the solenoid with a bidirectional obd scanner and they seem to click just fine.
I'm worried it may be the oil pump/pressure.
 
#2 ·
I would look at oil level and quality first. Both VCM spool valves (no VVT on this engine) are oil pressure operated so a low pressure condition will cause this. I vaguely remember a TSB for that, maybe not.
 
owns 2006 Honda Odyssey EX
#3 ·
...Both VCM spool valves (no VVT on this engine)...
It has both Variable Valve Timing and Variable Cylinder Management.
Honda Newsroom
"Power comes from an advanced 24-valve, all-aluminum V-6 engine with "intelligent" Variable Valve Timing and Lift Electronic Control (i-VTEC) technology with Variable Cylinder Management (VCM). "

I haven't had any issues with the spool valves yet (217k miles). It might be worth replacing the gaskets which have an integrated mesh screen to catch gunk in the oil. Perhaps the screens have caught something that is reducing oil flow. The oil pressure switches on the spool valve assemblies could be another potential source of the issue.
 
#4 ·
In spite of that PR blurb, the active valve adjustment function is limited to disabling cylinders. There is no actual mechanism in our engines to adjust valve timing in running cylinders. No VVT solenoids or servos or other actuators, no smarts in the PCM to actuate them.

One of the claimed features on my Pilot is "Power Folding Mirrors", when in fact the feature is much more accurately described as "Folding Power Mirrors". There is no "Power Folding" function available. But, the marketing gurus twist the words slightly to more favorably misrepresent what's actually there. Ditto the Variable Valve Timing claim. Yeah, on up to four of the six cylinders, the valve timing 'varies' between "opens sometimes" and "never opens". It's a real stretch, but apparently they can do it.

TL;DR --
It certainly pays to do your homework/Due Diligence, and plan to manage your expectations. No single issue is likely to kill a purchase decision, but learning to plow through the marketing language is important when you shop. We had the luxury of a three-month test drive/familiarization period before purchase, something not everyone usually gets. For other new-car purchases, I usually go rent candidate cars for project/business trips, and get some actual seat time before a final decision.
 
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