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How do you change the vacuum modulator on a 1979 Chevrolet El Camino 276?
Wiki User
∙ 12y ago
rear pass side of trans. vacuum modulator with vacuum hose attached to end. unplug hose and remove retaining bolt and retainer clip. gently pull modulator out of trans without dropping push-pin. have new one ready. while holding finger over hole to prevent trans fluid leaking place pin in new modulator and install. make sure vacuum hose is attached and in good condition on engine end too. if trans doesn't shift still go for the governor. located under a round cover w/a bail clip on the drivers side of trans just behind shift linkage. use screwdriver to pop off cover and governor just pulls out. nylon gear on shaft likely worn out. hope this helps. jp
Wiki User
∙ 12y ago
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Where is the modulator valve and how do you replace it on a 1992 Explorer?
There is a modulator on some transmissions. If yours has a vacuum line going to the trans, it connects to the modulator and you simply remove the bolt holding it and pull it out.
Does a 1988 Chevy 1500 have a transmission vacuum modulator?
More Info, If You Do Not Find A Modulator, You Could Have a Different Trans. If You Have A Square Pan With 16 Bolts Then You Have A 4L60 or TH700( no modulator on these) If the pan is oval and 17 Bolts Has 4L80 ( no modulator on these) Hope This Helps You Should Have A TH400 Trans & It Does Have A Modulator.
How do you check a modulator valve?
first pull off the line going to it and if it has fluid in it change the modulator. Next, take the modulator off and apply vacuum to the line and stick a screw driver in the end of the modulator and see if the diaphragm moves the valve inside. If the valve doesn't move, replace the modualtor. - i am assuming ford but also you can pull the vac.line off of carb.or wherever it draws the vacume from without getting under car and check for fluid at that point Consider getting yourself a service manual as it contains many troubleshooting for your car. Comes very handy sometimes.
Why does your turbo 350 transmission come out of 3rd gear when above 60mph and under load it seems to go to 2nd gear but if you don't rev rpm's up enough it just coasts?
make sure the fluid is full and the vacuum line is connected to the vacuum modulator on the back of the transmission, also you could install a new vacuum modulator that might cure the problem, have you changed the transmission filter? it could be getting plugged.
What is the typical cause of a vacuum leak in a 2004 Chevrolet Impala?
The most typical cause of a vacuum leak is a cracked vacuum hose. The hoses get brittle with age, and cracks are common.
Where is the transmission vacuum modulator on a 90 Chevrolet Silverado?
It does not have one,Its controled by the computer. NEUTZ
How do you change vacuum modulator on 1993 ford explorer?
With precision.
Where is the vacuum modulator located on a 1999 Chrysler Sebring 2.5 jxi?
The transmission does not have a vacuum modulator.The transmission does not have a vacuum modulator.
Where is automatic transmission modulator on 1983 Chevrolet c10 Pickup?
Should be at the side of transmission with a vacuum line attached to it
How do you change Vacuum Modulator on 350 engine?
The vacuum modulator is located on the passenger side of the transmission, just above the tranny oil pan. It has a vacuum line going to it. It actuates a valve in the tranny for upshifts.
Where is the vacuum modulator on a 1999 Chrysler Sebring 2.5l?
The transmission on a Chrysler Sebring does not have a vacuum modulator.The transmission on a Chrysler Sebring does not have a vacuum modulator.
Where is the vacuum modulator on a 2001 Pontiac Montana?
2001 Montana has an electronic transaxle. There is no vacuum modulator. The 2001 Montana has an electronically controlled transaxle. There is no vacuum modulator.
Where is the vacuum modulator on a 1979 Chevrolet pickup?
Are you asking about the vacume modulator for the distributor? That is on the distribiter, you will see a hose on it or wher hose should be. If ou are wanting vacume modulator for the automatic transmition it should be on passenger side of transmission toward the back.
How do you find a transmission vacuum modulator for a 1991 Chrysler new yorker?
The transmission in a 1991 Chrysler does not have a vacuum modulator.The transmission in a 1991 Chrysler does not have a vacuum modulator.
What is a vacuum modulator?
On some of the older vehicles the vacuum modulator controlled the shift points of the transmission by using the vacuum supplied from the engine.
How do you change Ford Festiva transmission vacuum modulator?
just buy a new one and replace it
How do you adjust a vacuum modulator?
I assume your refering to the vacuum modulator which controls transmission shift points. Remove the vacuum hose from the modulator. Using a small screwdriver, turn the screw inside the modulator. It may take several tries to get it right.
