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1987-1991Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre
Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
My 1990 Bonneville SSE refuses to go over 3000 rpm at forward gears (I need to rev it because I got some seafoam.) The car is able to rev to high rpm in park and neutral. But doesn't rev in forward gears. Ignition coil is new, spark plugs were replaced last year. The car pulls normally from 1000-2500 rpm, not weird sound at lower rpm. LN3 engine and 440T4 trans.