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

36,085

or a torque converter clutch.

23,385

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

Your Answer:

Pontiac Le Mans Experts

  • #1
    Rucko
    Reputation
    450
  • #2
    Js08016
    Reputation
    190
  • #3
    taver91
    Reputation
    180
View All

Related Models For Sale

Used Pontiac GTO
4 Great Deals out of 375 listings starting at $7,500
Used Pontiac Firebird
5 Great Deals out of 679 listings starting at $4,700
Used Ford Mustang
256 Great Deals out of 38,497 listings starting at $1,350
Used Chevrolet Corvette
90 Great Deals out of 15,066 listings starting at $3,620
Used Chevrolet Camaro
240 Great Deals out of 27,310 listings starting at $2,077
Used Dodge Challenger
146 Great Deals out of 23,904 listings starting at $7,995
Used Pontiac Grand Prix
12 Great Deals out of 1,779 listings starting at $800
Used Pontiac Tempest
11 listings
Used Dodge Charger
294 Great Deals out of 32,237 listings starting at $1,850
Used Chevrolet Nova
149 listings
Used Buick Skylark
59 listings
Used Chevrolet Monte Carlo
4 Great Deals out of 954 listings starting at $2,950
Used Pontiac Bonneville
3 Great Deals out of 326 listings starting at $1,900

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.