Wiggly vacuum modulator? update, end of page one - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-14-2005, 10:55 PM   #11
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Adjust the setscrew for shift firmness to your satisfaction. You'll have to play with it. Find which way is min and which way is max, then pick your poison. Just remember that the firmer the shift, the more abuse on your diff. Particularly the 1-2 shift for the Series 1.
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Old 11-15-2005, 12:20 AM   #12
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Very easy to change out. There is one 10mm bolt that holds the modulator on. It takes less than 10 mins to change out. The modulator that you purchased is it an adjustable modulator allowing you to adjust the firmness of the shifts. The adjusting screw should be in the vaccum port.
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Old 11-15-2005, 12:24 AM   #13
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I personally set my modulator at max. pressure (full clockwise). It made a world of difference, even though my old one wasn't that bad. I'd make sure the engine was moderately cool when you do this, however, because it'* right next to the hot exhaust manifold and crossover pipe. Oh and a bad modulator can DEFINATELY cause extremely slow shifting. I think justin (opensourceguy) had this trouble on his car.
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Old 11-15-2005, 12:27 AM   #14
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Yes, the guy pointed out the set screw, as I said above. Maybe I'll swap it during work tomorow.
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Old 11-15-2005, 12:29 AM   #15
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I'm interested in this also.....As I know that mine leaks....
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Old 11-15-2005, 09:16 AM   #16
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Pics would be appreciated if possible.
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Old 11-15-2005, 10:08 AM   #17
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Quote:
Originally Posted by BillBoost37
Pics would be appreciated if possible.
You're kidding.

It'* easier to change than an ignition coil.
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Old 11-15-2005, 10:25 AM   #18
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by BillBoost37
Pics would be appreciated if possible.
You're kidding.

It'* easier to change than an ignition coil.
I don't know, a coil is pretty damn easy. This thing requires a little more reach and bending further over...
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Old 11-15-2005, 10:12 PM   #19
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Quote:
Originally Posted by J Wikoff
Quote:
Originally Posted by willwren
Quote:
Originally Posted by BillBoost37
Pics would be appreciated if possible.
You're kidding.

It'* easier to change than an ignition coil.
I don't know, a coil is pretty damn easy. This thing requires a little more reach and bending further over...
I could see this beering a 2-3 beer project....based on my drinking style...LOL
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Old 11-15-2005, 11:10 PM   #20
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o o aa aaauuuhhhhhh......

wha... did? Hold on, I think... yeah, I just blew it in my pants... twice.
























Holy flippin' jeez... WHITE WHINE SHIFTS AGAIN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Three minutes, and she shifts, LIKE FREAKING NORMAL!!! Maybe a tad firm, so I backed off the set screw a couple turns.

You don't understand, for over a year now, third gear has been useless. I've had to manually shift my automatic transmission. For now, those days are OVER!!!! This is the best 13 dollars I have ever spent, EVER.

Now if you will excuse me, gentlemen, I need a towel.
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