Wiggly vacuum modulator? update, end of page one - Page 3 - 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 11-15-2005, 11:13 PM   #21
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Glad it worked out for you. Those modulators are goofy inventions, one tiny problem and it'll turn your hair grey.
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Old 11-15-2005, 11:20 PM   #22
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When I pulled out the old one, I found that the pintle on the end had no tension. The new one took quite a bit of force to push in. An obvious difference. And tranny fluid leaked out of the old one when I held it up on the end and pushed the pintle in, if that'* an indication of anything.
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Old 11-15-2005, 11:55 PM   #23
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If the modulator is leaking fluid, replace it. It'* cheap, and if it'* leaking, it IS causing you problems.
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Old 11-16-2005, 08:08 PM   #24
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Hmm, I've got the set screw all the way counter clockwise it will go, and it still shifts pretty firm...
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Old 11-16-2005, 08:51 PM   #25
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Well some of those 4T60-E'* can shift pretty firm, i know my grandmas lumina sure does. You must have a better tranny than you thought
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