Vacuum Hoses Diagram and VSV ??? - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 12-02-2007, 07:38 PM
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Vacuum Hoses Diagram and VSV ???

Does any one know where I can find a vacuum hose diagram for a 91 Toyota Truck (4x4) 3.0?

I think I have a few hoses misconnected cause I am getting a 71 code (EGR)
My EGR valve is fine so is the vacuum modulator and coolant temp sensor.

I am not getting any vacuum to the EGR (cold or hot) so I need to trace back to the source of the vacuum. I thin it could be a faulty VSV or a hose misplaced in the wrong location. More so a misplaced vacuum line since my motor was taken out recently and the mechanic said he is not sure he placed back the vacuum hoses to the original place he removed them from.

By the way, out of the 4 valves that look like a VSV, which one is the VSV for the EGR? The color of the electrical harnesses are Blue, Red, Green, and Silver in that order from left to right (as looking on the passenger side).

Thanks
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#2 Old 12-02-2007, 08:26 PM
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I think the factory service manual is on the sticky. It is a bit hard to follow, there also may be some pictures posted by others who have had the same problem. Good luck with this tedious project.
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#3 Old 12-02-2007, 09:02 PM
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#4 Old 12-02-2007, 10:57 PM
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Diagram

Thanks for the diagram. It helps a lot.

I discover the metal vacuum line is plugged. I guees it got some humidity and got corroded inside. It's clean now but I think I will check all other vacuum lines now that I am on it.

Thanks again.
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#5 Old 02-11-2008, 03:06 PM
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Sorry bout the hijack, but what is the real / full name for a VSV?
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#6 Old 02-11-2008, 03:12 PM
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I think it stands for Vacuum Solenoid Valve.
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#7 Old 02-11-2008, 10:59 PM
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Vacuum switching valve. It switches vacuum on and off.

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#8 Old 02-13-2008, 04:13 PM
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^ you don't happen to have a diagram like that for the 22re, do you?

My heater core replacement writeup with pics: http://www.toyotanation.com/forum/t209136.html

1994 Toyota 4x4, 31x10.50, 22re. <- to undergo high compression 7MGTE swap whenever i finish building it.

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#9 Old 02-13-2008, 08:16 PM
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if you can tell me the generation, i might be able to find it.
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#10 Old 02-13-2008, 11:15 PM
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Quote:
Originally Posted by shaeff View Post
^ you don't happen to have a diagram like that for the 22re, do you?

Ask and ye will get it. This excludes cali emissions models.





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