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

28,705

or a torque converter clutch.

21,775

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
5 Great Deals out of 446 listings starting at $4,995
Used Pontiac Grand Prix
21 Great Deals out of 2,653 listings starting at $1,450
Used Pontiac Firebird
9 Great Deals out of 759 listings starting at $3,500
Used Chevrolet Camaro
438 Great Deals out of 31,254 listings starting at $1,450
Used Buick Riviera
105 listings
Used Chevrolet Corvette
164 Great Deals out of 17,423 listings starting at $3,000
Used Porsche 911
126 Great Deals out of 5,084 listings starting at $10,947
Used Pontiac Bonneville
487 listings starting at $1,799
Used Chevrolet Monte Carlo
11 Great Deals out of 1,252 listings starting at $1,488
Used Jeep Cherokee
489 Great Deals out of 60,717 listings starting at $1,995

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.