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Hooking up vaccum conections where do they go....

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What is the year, model and cylinder number there?

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Code po452 on 2005 dodge stratus

po452 indicates an issue with the nvld valve. it is located above the fuel tank, in order to test this you will need a hand vaccum pump, and and a multimeter if you look at the canister there will be a standard vaccum line and a vent tube wich will be larger, the vent tube needs to be blocked off, and the vaccum pump will need to be hooked up to the vaccum line. Next the meter will need to be inserted into the harness coming from the switch (orange wire).(''t''pins from wal mart sewing department may be helpful here). Keep the harness hooked up key on engine off, when vaccum is applied (about 1 hg on the gauge) the voltage should start at 12 volts and drop to 0 volts if operating correctly ,test it several times, the most common fix is to replace the whole assembly, it includes the charcoal canister, and requires removal of the fuel tank, hope this helps chris.

Jun 23, 2014 | 2005 Dodge Stratus

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1998 dodge 5.9 cummins.... I have no vacuum from my lines inside the cab for my ac/heat, I see in the engine compartment a filter looking thing going to the vacuum lines but there isn't anything hooked...

This is probably a good guess. Get a vaccum gauge and poke around. If it truly is no vaccum going into the cab, find a source and hook it up. See if that fixes the problem.


Feb 11, 2018 | 1998 Dodge Ram 1500 4WD

2 Answers

On an 1980 cheve truck with 350 4bbl does the vaccume go to steady vaccume or only vaccume when on throttle

You will have more vacuum at idle than you will when you accelerate. In the old days when cars had vacuum operated windshield wipers, the wipers worked good when idling, but when you gave throttle they would slow down or stop completely. Just an example of the difference in vacuum between idle and throttle.

Jan 24, 2011 | GMC Sierra 1500 Cars & Trucks

1 Answer

Shurt off when is runing

Idle Control...Remain Unstable...Check for Vaccum Lost,, Possibility PC's Valve Defect Check For Electronic Injector Sensor for bad conection Check Alternator Regulator for failing Signal may cause damage to all sensor and Firewall & Logic Board Check Battery for power lost ...

Oct 01, 2010 | 2003 Mercury Mountaineer

1 Answer

My 2004 f250 will only go into defrost mode after sitting for 8 months. All vacuum lines are hooked up and a/c and heat work fine, just goes into defrost mode.

after setting that long look for a vaccum line thats rotted or mice ate thru one disconnect the vaccum line going thru the front of dash into the car unplug arn see if you are getting vaccum there if not, trace it backwards until you find the leak.

Oct 11, 2009 | 2004 Ford F250

2 Answers

Correct vaccum line hook ups for 91 toyota pickup 6 cyc

You will find what your looking for here. free and with real pictures!!! got a few you can check out but use the first one first
these will help you a lot, they helped me out with the same problem

Apr 17, 2009 | Toyota Pickup Cars & Trucks

1 Answer


if its only coming out certain vents and will not change the vents when the dial is switched, it is probably in the vaccum lines under your dash behind the glovebox. Should be a long bar with a bunch of different colored vaccum lines hooked to the side of the hvac box. One comes in from a different direction then the others and that is your main vaccum feed. Check that one first. If it has vaccum check the lines at the plungers mounted on the side of the hvac box. (big round things) they should each have a line going to them, make sure they didnt break or unhook. You can squeeze the plungers by hand and it should change which vent the air comes from. If this makes it change its deffinatly a vaccum problem? Hope this helps.

Mar 14, 2009 | 1998 GMC Sonoma

1 Answer

Passenger side temperature is blowing all hot air no matter what the temperature is set on that side

your blower box under the center of the dash board has several internal levers in which is controled by vaccum, check to see if they are leaking or has a broken or (not hook up) vaccum line.

Mar 06, 2009 | 1999 Buick Park Avenue

1 Answer

Air conditioning

You have a vaccum leak. Look under your hood for a 1/4 inch black plastic line. It can be hooked into your filter intake housing. Usually this is where the leak is. There also is a black round plastic ball shape device under the hood. This usually has a vaccum line connected, you don't want any leaks there. Those are the easy fix suggestions for a vaccum leak. If you can't find it there, look for other vaccum operated items that are model specific. Hope that helps.

Dec 16, 2008 | 1998 Hyundai Elantra

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