Question about 2004 Suzuki Forenza

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Is there a vacuum line connected to the transmission?

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Im Pretty sure almost positive you do you should get a Chilton's manual if you are going to do repairs on your vehicle it will come in handy in more ways than you can imagine possible. Let me no how you made out.

Posted on Sep 14, 2010

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Transmission vacuum line on a 2007 Ford Freestyle connection


There is no vacuum line to the transmission as it has no vacuum modulator.

Oct 26, 2016 | 2007 Ford Freestyle

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How do I find actuator to see if vacuum line is off to see if that's why my 1999 Buick Regal all the sudden is shifting hard


There is a vacuum line that connects to the vacuum modulator on the side of the transmission.

Feb 08, 2015 | 1999 Buick Regal

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What is the 1/4" auto transmission vacuum hose connected to, from the intake manifold of a 1991 ford explorer 4x4 pushrod engine?


There should be a modulator (vacuum diaphram) on the transmission. The line from the intake manifold port connects to the 1/4-inch nipple on the modulator, which directs the transmission to shift gears at a pre-determined level of manifold vacuum.

Oct 04, 2013 | Cars & Trucks

1 Answer

Where does the vacuum for the transmission go on a 2002 frontier?


tHE VACUUM hose from transmission should be connected to the engine intake manifold. It is ussually connected right after the throtle. Thats where your "hard line", or tube, should be connected.
With the engine running, disconnect the hose from the tube, or at the transmissio, and feel if you have vacuum. the vacuum should vary with engine speed. If you have vacuum at the hose, then your problem is elsewhere.

Oct 23, 2012 | 2002 Nissan Frontier Crew Cab

1 Answer

Transmission doesn't want to go into 3 without manaully shifting into 2 gear


Check the transmission fluid level, by the book, usually with the motor running in park or neutral, find out which one.
If that's ok, start looking for a bad vacuum line or connection. Any vacuum leak can throw off the transmission shifting. Try to pull each connection off, if it comes off easy, check to see if it is split or swollen. My Ford uses hard plastic vacuum lines, they break.

Mar 16, 2012 | Cars & Trucks

1 Answer

We a vac line on the top of the tranny.cant find where to attached it. the new motor is reall hard to start.it pops and smells like it flooding. it came with the trotle body on the motor should i replace...


The pops and the disconnected vac(uum) line and the smell of fuel may al be related. The vacuum line to the auto transmission is there to tell that gear shift about the level of load that the engine is under. When you first start the car and accelerate really slowly notice how quickly the gear box shifts up through the gears. However if you accelerate hard the transmission holds each gear for a long time to take advantage of the high power delivered by the high engine speed. The vacuum line conveys to the transmission the level of vacuum in the inlet plenum manifold. When you accelerate slowly the throttle plates only opens a small amount and maintains a strong vacuum level. This vacuum permits the transmission to shift up through the gears quickly. If hard acceleration is demanded the throttle plate is fully open and there is almost no vacuum. The lack of vacuum on the transmission restricts gear shifts. The vacuum lie usually makes connection with the transmission on the left (facing towards the front of the car) near the selector switch. The other end of this line must make connection with a port on the inlet manifold plenum or runner (on my car the port connection is actually very close to the injector on the inlet runner towards the back of the engine). The open connection port is causing the other problems. With un-metered air entering the plenum (not passing through the throttle) the engine computer is struggling to keep the injection times long enough to keep the fuel to air mix balanced. This gives rise to very uneven running and perhaps the 'pops' and smell of fuel that you are experiencing. Locate the connection and stick the vacuum line from the transmission on it. Make sure that there no further leaks compromising the inlet vacuum. Make sure the interior of your 'new' throttle is very clean. All of these things help and add up to a better running engine.

Sep 21, 2010 | Dodge Dakota Cars & Trucks

1 Answer

87 buick century won't shift out of first


The first thing is to check the transmission fluid level, then check the vacuum modulator located out on the side of the transmission, and be certain that the vacuum line is connected to the vacuum modulator, and that the vacuum line also has no leaks and it is connected to an intake manifold vacuum source. If you remove the vacuum line from the vacuum modulator and if there is any transmission fluid is in the vacuum line then the vacuum modulator is faulty and it will need to be replaced.


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Sep 21, 2010 | 1987 Buick Century

1 Answer

Transmission shift Engine has to be 2000 RPM for the Transmission to shift up you can let up it will change gears. Shifts fine hesitates very slight from direct to OD. Is 2000 RPM Normal


Check for vacuum leaks--especially along vacuum hose that goes to transmission or other hoses that connect near the port that the transmission vacuum line connects at the engine intake manifold. Please reply if you have more questions.

Sep 15, 2010 | 2004 Ford F150

2 Answers

2002 mercury cougar vacuum line off the top of transmission


The hose connects to the top of the transmission, underneath the car's battery (you'll have to remove the battery to see the connection site). It's important that this hose, once reconnected, does not does not get crimped. If the hose is not free to "breathe" pressure buildup in the transmission can cause fluid to pour out of the fill point (where the dip-stick goes).

Apr 11, 2010 | 2002 Mercury Cougar

2 Answers

Transmission does not shift out of 1st gear automatically. must get off gas for rpms to drop and then it will shift to 2nd gear. no other shifting issues.


There is a vacuum line that is connected to a vacuum modulator on the transmission. The vacuum modulator looks like a tiny inline fuel filter on the right rear of the transmission. Remove the vacuum line from the modulator, if transmission fluid spills out when the rubber hose is removed the modulator is punctured. The engine will **** your transmission fluid through the vacuum line and into the intake system and burn it through combustion. If the modulator is punctured you must have it replaced.

Nov 29, 2009 | 1992 Ford Explorer

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