Replacing the A4LD Vacuum Modulator

[sleeper_inc]

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

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[924banger]

What are the symptoms of this failing? nice pics by the way!

[sleeper_inc]

Later shifts, transmission fluid in the lines, and a wired burning smell (also bad shifts)

[924banger]

cool, just asking for later viewers of this thread. It should be put in the tech articles.

[sleeper_inc]

Already there

Don't have the contributor badge for nothing [8D]

[usermst9673]

how much did it cost you for the new one? And where did you buy it at?

[sleeper_inc]

$15, and I got mine from auto parts plus. Any store should carrie it

[usermst9673]

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?

[sleeper_inc]

Yes it does, but thats because its the turbo one (highly recomend it since you can change your shift points with it)

[usermst9673]

good thats the one i got glad to hear i can adjust my shift points now!!!!