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If my vacuum line to my transmission not hook up would my 87 monte ss shift slow an race my motor in my car cause it shifts its like a stick tho

The shifts but but its like a stick but it dont slip it shifts as soon as i let off the gad peddle

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  • Expert
  • 344 Answers

Yes it will not shift properlly

Posted on Nov 29, 2012

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Posted on Jan 02, 2017

autodr
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SOURCE: intermittent 4wd on 98 jimmy

the module is what i would suspect. and i do believe it is in the r kick panel. i've seen the button pack on dash go bad too, but module is best bet.

Posted on Nov 16, 2008

Gort007
  • 1187 Answers

SOURCE: truck doesnt wanna shift transmission is not

The vacuum modulator on side of transmission::
vacuum hose is disconnected or the diaphragm in the mod is ruptured, causing overdrive to shift to soon.
Replace ($20 AutoZone) ... no special tools.

Posted on Sep 28, 2009

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SOURCE: 2003 monte carlo ss 133,000 miles. abs brake box

Nope.

Posted on Dec 10, 2009

  • 1 Answer

SOURCE: hard shifting from 1st to 2nd

I have been hearing a possible solution for this problem is changing the oil filter in the trans oil pan. But ive been looking all over for a solutionand thats the only legit one ive found. It said when the oil gets clogged it doesnt flow to the transmission as nicely as normal therefore leading to lagging changes

Posted on Apr 19, 2010

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1 Answer

Why is tracker slow shifting from second to third gear


2doors or 4 doors?
3 speed or 4 speed transmission, I'm assuming its not a manual stick.
as those too can shift slowly on other oddities.
the 3/4 speed can delay shifts if the TV cable sticks or is adjusted wrong, as can the 3sp vacuum modulator vacuum hose fell off.
the 4 speed can delay for , the TCM sees transmission slip.
the 4 speed is electronically shifted , unlike the 3sp.
the 4speed flashes the OD lamp if there are troubles. (means scan it)
ask how.

http://www.fixkick.com/slush-pump.html


Oct 03, 2014 | 1992 Geo Tracker

1 Answer

Car shifts slow about going in drive sometimes all other gears are fine reverse and all power is also good mechanic says its not transmission so what could it be? cound it be something inside the...


could be clogged transmission filter or shift valves in valve body sticking go to auto parts look for transmission additives to help free shift valves and buy transmission fluid for high mileage transmissions the fluid will recondition swell up transmission seal help transmission shift better.

Nov 17, 2013 | 2001 Chevrolet Monte Carlo

1 Answer

87 sedan deville soft slow shifting


You sure the modulator on top of trans is good
or has vacuum?

After several years of use the valve body get dirty
& they only go 7 to 10 years
Got nothing at all to do with mileage

Is the exhaust converter blocked or gas filter clogged

Mar 08, 2013 | Cars & Trucks

1 Answer

87 monte carlo ss have to take my foot off the gas peddle for my ****** to shift what should i do


Drive like a civilized whiteman end not like a wounded indain, DUDE

Nov 29, 2012 | Cars & Trucks

1 Answer

2002 dodge Dakota stuck I'n 4 wheel drive so u


The 4x4 is controlled by vacuum. There is a vacuum switch on the top of your transfer case that control the vacuum to the front axle shift motor. The shift motor has 2 ports, when vacuum is applied to one side the shift motor moves the fork one way and when vacuum is applied to the other side, the fork moves the other way.

The first thing I would do is verify the hoses at the transmission cross member are hooked up. Then I would remove the 4 bolts from the shift motor and remove the motor and start the engine and shift in and out of 4x4 waiting 10 seconds before each shift and see if the fork moves.

If it doesn't you will need to check the vacuum connector on top of the transfer case and make sure it is fully attached, if it is, you will need to remove the vacuum connector and check to see if you have engine vacuum on one port(around 15" vacuum). The ports are as follows - one port goes to engine vacuum, one port goes to a vent and the other two go to your shift motor. The hoses that go to the shift motor are bad for getting plugged, so you should use compressed air and see if they are clear.

If everything checks out, you will have to remove the switch on the transfer case and operate it by hand while the engine is running and see if the plunger moves in and out. Sometimes the plungers will stick in!

A vacuum gauge and pump are needed to check the motor and switch. If you don't have one, you might need to borrow one and put a vacuum on the shift motor and see if it holds vacuum. Once you put a vacuum on the shift motor the fork should move and then should pump down and hold a vacuum, if it doesn't hold vacuum, you will need a shift motor.

This is alot of info, but there are many possibilities for this not working and you will have to check all these things to diagnose this.

Jul 27, 2011 | 2002 Dodge Dakota Club Cab

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

I'm having trouble when I put the car in drive it's going through it's gear progression slow and it's idiling high I'm thinking it may be the transmission fillter since I had the transmission replaced...


Check this first. On the transmission there should be a small vacuum line that goes all the way to the inlet plenum, check that both ends of this line are are connected securely and that the line has no holes in it. This vacuum line governs the rate at which the transmission moves from one gear to the next. When the engine is running slowly, just above idle, the throttle plate is all but closed and the car will shift through the gears pretty quickly as there is no load and plenty of vacuum. If on the other hand when the engine is racing under load, with the throttle plate fully open, there is little vacuum and the transmission holds in gear for very much longer before up shifting. If this vacuum line is disconnected or leaking the transmission will interpret this as the engine under load and will be very tardy in up shifting.

Sep 08, 2010 | 1992 Buick LeSabre

2 Answers

1998 Chevrolet Cavalier, automatic transmission. Engine light comes on and then when car shifts gears, it shifts very rough. Took it to a mechanic and it wasn't reading any codes. Had car serviced and...


A vacuum leak somewhere, or a tranny modulator, or both. Mechanic can do a vacuum test, or you can buy the vacuum meter and do it yourself. transmissin modulator (if your car uses one, that is) is located on the outside of the tranny and looks like a frisbee-shaped disk about the size of the base of a water glass, made of aluminum, and has a vacuum hose attached. buy at a parts store. (I'm betting on a vacuum leak, though)

Aug 06, 2009 | 2005 Chevrolet Monte Carlo

1 Answer

Monte carlo


You need to rebuild the transmission,it's over heating. May want to check your transmission cooler first .
Please rate this!

Jun 10, 2008 | 2001 Chevrolet Monte Carlo

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