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Pontiac of the Month

no name3's 1965 LeMans

2021 April
of the Month

1978 Bonneville

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About 1978 Bonneville

  • Rank
    Fresh Meat
  • Birthday 10/20/1981

Profile Information

  • Location
    Denton, Maryland
  • Interests
    Antique Allis-Chalmers tractors, mowers and Simplicity mowers. Keeping my 1978 Pontiac Bonneville Brougham 4 door sedan in good working order.

Forever Pontiac

  • Name
    Leslie Scott
  • Gender
    Male
  • Year
    1978
  • Car
    Bonneville Brougham
  • Trim
    Broug
  • Engine
    301 V8
  • Style
    Sedan
  • Color
    Seafoam and Mayfair green

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  1. Frosty I actually went with the simple things and took the seat switch out and sprayed it with WD-40 while working all of the switches and everything works fine now. I guess it just got corroded inside from very little use but WD-40 does work wonders and now everything is good. Thank you
  2. Frosty thank you for some insight. Luckily the seat power switch is at the base of the seat and easily accessible so I’ll have to try this out and see what I come up with. Hopefully it’s a really simple problem and I don’t have to replace any seat motors. The car only has a little over 80,000 miles and I believe the seat was rarely moved as my grandparents bought it used in 1981.
  3. My 1978 bonneville brougham has the power seat for the driver and the main switch moves up and down and the rear lift switch will move the back up and down but the front won’t move and I can’t get it to move forward or back. Can’t tell if the switch is bad or what. Everything clicks but I’m not too sure. Anybody have any insight on this?
  4. Is there a four barrel intake that Pontiac made for the 301 cubic inch V8? I’ve got a 1978 Pontiac Bonneville Brougham four door sedan and was wondering if there was a factory 4 barrel intake. I still have the 2 barrel intake but would like to get more power out of this little engine as much as possible
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