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1995 Buick Riviera power problems?

Charly L

Buick Newbie
I have a 95 Riviera after warm up when I step on the gas when the RPM's reach 3500 4000 the engine begins to waver you can see the tach. needle
going back and forth, proceeded by my engine service soon light coming on, any feed back on this problem would be appreciated


Full Member
Buick Ownership
1996 Roadmaster Limited Collectors Edition 58k - 1996 PAU
A clogged CAT may also be a suspect. Do you have any codes?
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