Replacing the A4LD Vacuum Modulator
03-20-2008, 08:42 PM
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Location: Regina Beach, Sask
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Replacing the A4LD Vacuum Modulator
If your Modulator has failed (like mine) then when you take the vacuum line off transmission fluid will drip out (flow out)
Loosen the bolt (its 10MM) and take the bracket out
Old modulator on the right, new one of the left
This is the thin metal pin inside the modulator... DO NOT LOOSE THIS!!!! transfer over to the new modulator
Pictures of the only modulator
Picture of the new modulator
Bracket used to hold the modulator in place
Space were the modulator goes
New modulator in place with vacuum line hooked up
not so hard to do when the car is jacked up
03-20-2008, 09:32 PM
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RE: Replacing the A4LD Vacuum Modulator
What are the symptoms of this failing? nice pics by the way!
03-20-2008, 09:39 PM
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RE: Replacing the A4LD Vacuum Modulator
Later shifts, transmission fluid in the lines, and a wired burning smell (also bad shifts)
03-20-2008, 09:58 PM
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RE: Replacing the A4LD Vacuum Modulator
cool, just asking for later viewers of this thread. It should be put in the tech articles.
03-20-2008, 10:07 PM
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RE: Replacing the A4LD Vacuum Modulator
Already there
Don't have the contributor badge for nothing [8D]
03-21-2008, 05:03 AM
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RE: Replacing the A4LD Vacuum Modulator
how much did it cost you for the new one? And where did you buy it at?
03-21-2008, 08:40 AM
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RE: Replacing the A4LD Vacuum Modulator
$15, and I got mine from auto parts plus. Any store should carrie it
03-21-2008, 09:55 PM
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RE: Replacing the A4LD Vacuum Modulator
checked mine today and it was leaking badly. So i replaced it and figured i would change the filter and fluid in the tranny also. Well come to find out my trans is out of a 90 mustang even though my mustang is a 91. Drove nearly clear across town to the parts store that had the 91 filter to find out it didnt fit F*** me. Should have double checked.
Sleeper does your new one have an adjustment screw on it?
03-22-2008, 06:43 AM
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RE: Replacing the A4LD Vacuum Modulator
Yes it does, but thats because its the turbo one (highly recomend it since you can change your shift points with it
)
03-22-2008, 07:35 PM
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RE: Replacing the A4LD Vacuum Modulator
good thats the one i got
glad to hear i can adjust my shift points now!!!!