Results 1 to 10 of 10

Thread: motor dieing on bumps

  1. #1
    Senior Member s13 james's Avatar
    Join Date
    Aug 2010
    Name
    James
    State
    NSW
    Location
    Sutho Shire
    Country
    Australia
    Posts
    752

    Default motor dieing on bumps


    TO REMOVE ADS, PLEASE
    REGISTER OR SIGN IN
    car-ae86
    motor-4age bigport with rwd manifold
    problem-whilst driving tonight my 86 started to drop in revs for a breif second when ever i went over a bump on the road,at a latter stage when on a bad
    section of road it made the motor stall,headlights,music etc was still on,started fine off i went,this then happened once more before i made it home.I checked that various plugs and spark plug leads were on properly,battery terminals are tight,when driving on a smooth road it hauls ass like before,just bumps gives it issues,no warning lights or anything came on on the dash so alternator should be fine?so got me thinking a loose or worn out plug,sensor,
    or earth,could someone point me to which ones could possibly cause this bullshit,stingin to drivveeee (colour and location etc would be awesome)
    Last edited by s13 james; 19th August 2012 at 10:57 PM.

  • #2
    Noooob
    Join Date
    Jun 2010
    Name
    Matt
    State
    NSW
    Location
    Campbelltown
    Country
    Australia
    Posts
    5,186

    Default

    Most common is the wiring around the dizzy plug... always wears / breaks around that.

    Does it start / drive now?

  • #3
    Senior Member s13 james's Avatar
    Join Date
    Aug 2010
    Name
    James
    State
    NSW
    Location
    Sutho Shire
    Country
    Australia
    Posts
    752

    Default

    yer starts fine and drives fine till i hit a bump,by dizzy plug do you mean the big round yellow plug?

  • #4
    Noooob
    Join Date
    Jun 2010
    Name
    Matt
    State
    NSW
    Location
    Campbelltown
    Country
    Australia
    Posts
    5,186

    Default

    Yeah that is the one, just unplug it and inspect the condition of the wiring on both the dizzy itself and the loom... Normally on the loom the black wire is frayed / busted.


    So it is 100% reproducable each time the engine cutting out when you hit a bump??? Wriggle the connector on the firewall and also the one around the coil as well whilst it is running, it should cut out too.

  • #5
    Senior Member s13 james's Avatar
    Join Date
    Aug 2010
    Name
    James
    State
    NSW
    Location
    Sutho Shire
    Country
    Australia
    Posts
    752

    Default

    thanks,ill check that plug,wires and wiggle them to see if it cuts out,thanks matt,ill post up what happens

  • #6
    Noooob
    Join Date
    Jun 2010
    Name
    Matt
    State
    NSW
    Location
    Campbelltown
    Country
    Australia
    Posts
    5,186

    Default

    It shouldn't be hard to find / resolve... see how you go and if you get stuck I drive past your way a fair bit so it shouldn't be much to drop in and spend a couple of minutes looking over it.

  • #7
    Senior Member s13 james's Avatar
    Join Date
    Aug 2010
    Name
    James
    State
    NSW
    Location
    Sutho Shire
    Country
    Australia
    Posts
    752

    Default

    upon inspection just now i saw my alternator is not spinning,possibly could of been dieing?

  • #8
    Member
    Join Date
    May 2010
    Name
    James
    State
    NSW
    Location
    Randwick
    Country
    Australia
    Posts
    32

    Default

    Check the block connectors at the injectors sometimes they become brittle and crack causing a loose connection.

  • #9
    Noooob
    Join Date
    Jun 2010
    Name
    Matt
    State
    NSW
    Location
    Campbelltown
    Country
    Australia
    Posts
    5,186

    Default

    Alternator not spinning is a bad thing.... measure your battery voltage and it should be 14v or there abouts, if it isn't a half hour drive or so will kill your battery. Also check that your batt terminals are clean and nice and tight cos hitting a bump and it cutting out the alternator should have enough to keep the car running if the earths are all in check.

  • #10
    Senior Member s13 james's Avatar
    Join Date
    Aug 2010
    Name
    James
    State
    NSW
    Location
    Sutho Shire
    Country
    Australia
    Posts
    752

    Default


    TO REMOVE ADS, PLEASE
    REGISTER OR SIGN IN
    All fixed guys, found a chassis earth had lost its nut cause bad earthing, cleaned it up put a new nut on, life is sweet again ,thanks for your help matt and others, i also contact cleanerd all plugs as they were gross

  • Similar Threads

    1. Carb 4age - engine dieing
      By Deeken in forum Technical - Questions
      Replies: 0
      Last Post: 23rd October 2011, 06:18 PM
    2. ae86 trueno headlights dieing
      By ae86 in forum Technical - Questions
      Replies: 17
      Last Post: 17th June 2010, 02:01 AM
    3. Replies: 9
      Last Post: 2nd September 2009, 08:46 PM
    4. Brake Lights Flash On Bumps
      By Will(SPA50) in forum Technical - Questions
      Replies: 18
      Last Post: 22nd January 2008, 11:06 PM

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •