My 1971 Pontiac Lemans 350 starts and runs great in park. As soon as I shift the Turbo 350 transmission into gear, the engine will quickly fade and stall. I can power brake to keep rpm up and get the car moving. Plus it shifts a bit hard from 1 to 2, could this be a vacuum modulator issue?

55

Asked by Apr 18, 2015 at 08:24 PM about the 1971 Pontiac Le Mans

Question type: Maintenance & Repair

2 Answers

27,065

or a torque converter clutch.

21,485

more like a vacuum problem, intake gaskets or vac hose leaking

Your Answer

Pontiac Le Mans Experts

  • #1
    Rucko
    Reputation
    440
  • #2
    Js08016
    Reputation
    190
  • #3
    Daniel Perron
    Reputation
    160
View All

Related Models For Sale

Used Pontiac GTO
8 Great Deals out of 486 listings starting at $5,995
Used Pontiac Firebird
4 Great Deals out of 779 listings starting at $2,500
Used Chevrolet Impala
545 Great Deals out of 35,192 listings starting at $900
Used Chevrolet Camaro
433 Great Deals out of 30,717 listings starting at $2,495
Used Ford Mustang
591 Great Deals out of 36,206 listings starting at $1,200
Used Chevrolet Corvette
184 Great Deals out of 19,817 listings starting at $2,490
Used Dodge Charger
430 Great Deals out of 28,174 listings starting at $2,490
Used Pontiac Grand Prix
16 Great Deals out of 2,620 listings starting at $1,450
Used Buick Skylark
89 listings
Used Pontiac Bonneville
503 listings starting at $2,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.