redskinman Posted January 7, 2017 Share Posted January 7, 2017 I've got a check engine light on, slowly trying to eliminate things one by one. Found this hose just laying down in the engine bay that previous owner has plugged off with 2 bolts. One has vacuum to it the other doesn't. Rather then pics, I made this video. Quote Link to comment Share on other sites More sharing options...
redskinman Posted January 7, 2017 Author Share Posted January 7, 2017 Also I forgot to mention I cannot find any other components that look like they are missing lines hooked up to them.Even though the original window sticker says this was sold brand new at a Toyota dealership in Paris,Tx a sticker on the hood says this engine meets California emissions,do they all say that? So someone mentioned maybe those lines went to a smog pump? Quote Link to comment Share on other sites More sharing options...
fred heath Posted January 7, 2017 Share Posted January 7, 2017 Most vehicles have a vacuum hose diagram label posted under the hood. If none, try to find same year truck and ask the owner if you can look at their setup. Quote Link to comment Share on other sites More sharing options...
redskinman Posted January 7, 2017 Author Share Posted January 7, 2017 1 hour ago, fred heath said: Most vehicles have a vacuum hose diagram label posted under the hood. If none, try to find same year truck and ask the owner if you can look at their setup. Thanks,we looked at that diagram but didnt see where it went Quote Link to comment Share on other sites More sharing options...
darrel Posted January 8, 2017 Share Posted January 8, 2017 I just looked at my engine compartment, 94 Winnebago 3.0 engine. Those two lines go to a black plastic "switch"? mounted on the bottom of the "power steering pump". Probably a sensor for ?? Quote Link to comment Share on other sites More sharing options...
Maineah Posted January 8, 2017 Share Posted January 8, 2017 If they go to the steering pump it's an idle kick for the steering stops. Quote Link to comment Share on other sites More sharing options...
DanAatTheCape Posted January 8, 2017 Share Posted January 8, 2017 (edited) I recall seeing those on mine, but I can't say for sure. I think they went to the Power Steering and when the steering wheel turns, they allow some extra air into the intake plenum, Then the ECU via the O2 sensors recognize the mixture is too lean and extra fuel is added resulting in idle up. If my RV was close I would go look for you. Right now it is about 60 miles away & I do not plan to go out there for a week or maybe two. BTW, on my engine (93' vz3e) there are 4 VSV;s on the passenger fender well.. VSV notes from firewall forward: (purpose/color of vsv) Pair/blue Fuel/Red EGR/green air conditioning advance/black Edited January 8, 2017 by DanAatTheCape Quote Link to comment Share on other sites More sharing options...
redskinman Posted January 8, 2017 Author Share Posted January 8, 2017 ok thanks for replies Quote Link to comment Share on other sites More sharing options...
Maineah Posted January 9, 2017 Share Posted January 9, 2017 Just extra air no ecu involved, Lets in a little extra air when you come up against the steering stops thus increasing the idle speed to make up for the drag on the engine there is a similar vac switch for the AC to jack the idle when it’s on. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.