GM B-Body Forum, 77-79 Caprice/Impala Forum

Join Now If Your A 1977- 1979 Caprice or Impala owner or other GM B-Body owner!!!
Like us on Facebook https://www.facebook.com/BBodyForum?ref=hl
GM B-Body Forum, 77-79 Caprice/Impala Forum

A forum for all the owners and enthusiasts of General Motors B-Bodies from 1965-1996, but dedicated to the owners of 1977-1979 Impalas and Caprices. Join up now!


    ECM Delete / back to analog

    Share
    avatar
    farrellapparel
    Newbie
    Newbie

    Posts : 7
    Join date : 2017-09-06

    ECM Delete / back to analog

    Post  farrellapparel on Tue Jan 16, 2018 1:33 am

    I am having a intermittent stall / rough running issue on my 1984 LeSabre. The problem is very difficult to diagnose. (crankshaft or camshaft position sensor / Fuel or ECM / or combination of all). Would I lose performance at all if I switched to traditional HEI distributor and non-feedback carb? If so, could this be mitigated easily?

    Thanks - John
    avatar
    BrokenBlazerDave
    Junior Member
    Junior Member

    Posts : 31
    Join date : 2016-05-25
    Age : 42

    Re: ECM Delete / back to analog

    Post  BrokenBlazerDave on Tue Jan 16, 2018 12:17 pm

    That would be the first thing I would do, other than an LS swap. A well tuned regular carb and properly set distributor would work very well. IMO. It would be relatively easy to do depending on the availability of interchangeable parts in your area.
    avatar
    Kit1078
    Auto Novice
    Auto Novice

    Posts : 69
    Join date : 2015-04-26
    Location : Northeast Ohio

    Re: ECM Delete / back to analog

    Post  Kit1078 on Tue Jan 16, 2018 8:21 pm

    I did the same thing on my '85 olds delta 88 wagon. The only functional thing you lose is the lockup for the torque converter, but they make kits for that.

    Just make sure whatever carburetor you convert to has a provision for the kickdown cable on the transmission.
    avatar
    farrellapparel
    Newbie
    Newbie

    Posts : 7
    Join date : 2017-09-06

    Re: ECM Delete / back to analog

    Post  farrellapparel on Wed Jan 17, 2018 12:12 am

    Kit1078, why did you bother getting away from computer on the 85 Olds? Also, did performance change one way or the other after change out?
    avatar
    Kit1078
    Auto Novice
    Auto Novice

    Posts : 69
    Join date : 2015-04-26
    Location : Northeast Ohio

    Re: ECM Delete / back to analog

    Post  Kit1078 on Fri Jan 19, 2018 10:54 pm

    the electronic quadrajet was trashed when we got the wagon, and it wasn't worth fixing. Considering how badly the car ran before we converted it back to a regular carburetor, it's hard to say what performance we 'gained' but it certainly ran better. It was just one of those things where there were so many issues with the system it was easier and cheaper to convert it. The hardest part was changing the distributor, really.

    Sponsored content

    Re: ECM Delete / back to analog

    Post  Sponsored content


      Current date/time is Sun Feb 25, 2018 2:27 am