Another VTCS Topic re: vacuum

DavisCO

DavisCO

Greenie N00B Member
Greenie Member
I searched a lot before posting this, so I hope it hasn't already been answered.

Putting it all back together after valve scrub, EGR delete, etc., I ended up with one vacuum hose that didn't have a termination ANYWHERE. I searched for f****** 2.5 hours before I found that the nipple on the VTCS actuator had been broken off - long before my ownership looks like. I have the line blocked, but I cannot for the life of me find info on whether or not the nipple on the actuator was using vacuum or just acted as a block/terminal for the hose coming from the manifold runner. I don't want VTCS, but I'm not taking it back apart right now to strip it all out.

No CEL's (yet); just wanted to confirm whether or not I should expect any without vacuum on the actuator.... Pretty sure the actuator works off of electrical input from the vacuum-instructed solenoid, but, again, haven't found anything online to confirm.

Can anybody confirm that vacuum removal/plugging from this point will not cause any issues? The green plastic looks to have been broken on the front and back, so I can't tell if it was a functional vacuum at any point.
 

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If it was going to throw a code, it probably would have already since it's been broken for so long. As for not having VCTS causing issues, probably not. Your MPG will likely be lower, and starting from a stop probably slightly rougher than it normally would be as a result of not having high velocity air entering the cylinder from one runner vs two.
 
Sounds like I have a weekend project. Will update/delete thread depending on what I find. Seems like full deletion is the move rather than fixing a system that MOST folks don't seem to want anyway.

***MPG is around 20.1 with fairly aggressive driving. Rough from a stop tracks - first through mid-second are gross; thought that may have just been the gearing.
 
Do not remove the black box. Leave it plugged in connected to nothing else. Removing it will trigger a cel leaving it plugged in will not. It does not need to be connected to the flappers to trick the ecu
 
Easter Bunny said:
Do not remove the black box. Leave it plugged in connected to nothing else. Removing it will trigger a cel leaving it plugged in will not. It does not need to be connected to the flappers to trick the ecu
Click to expand...

Left it all plugged in. I didn't have time to work on much of anything this weekend - wife bought PYGMY goats and had some steers delivered. I performed, quite possibly, the most janky short-term fix of all time. I ran a brake cleaner hose down into the broken off vacuum port, clamped a v hose to that as best I could, then JB Kwik'd it all into place on the green actuator housing. Seems to be working as off-the-line driving is quite a bit smoother and I'm not detecting a leak. Not at all advertising this as a fix; just a band-aid until I source a new IM or pull/delete the VTCS.

Same advice regarding the black box removal for an aftermarket manifold? I assumed that you could have VTCS CEL tuned out just like the EGR codes?
 
you can turn the code off but not anymore with cobb and if you live in a state that limits the number of not ready codes you are allowed it is an easy way to not generate a CEL
 
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