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Thread: Jolt on acceleration

  1. #1
    Member
    Join Date:  Jan 2019

    Posts:    31

    Jolt on acceleration

    Hi all

    Today I noticed if I really put my foot down from the lights I got quite a noticeable jolt in the first few secs almost like the wheels slipped or a gear slipped. I could replicate so just wondering if the clutch is going or if it might be jumping a cog in the gear box or something? Itís needs a fair bit of torque to do it (like foot down of light or up hill).

    Anyone had this before?

  2. #2
    Administrator Ron's Avatar
    Join Date:  Jun 2011

    Location:  North GA

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    Have you checked your engine & trans mounts?

  3. #3
    Senior Member vwdmc16's Avatar
    Join Date:  May 2011

    Location:  sacramento

    Posts:    1,373

    My VIN:    1768

    Club(s):   (NCDMC) (DCUK)

    Most likely transmission mounts or engine mounts letting go. Best to confirm with the vehicle on a lift and using a large prybar to move the engine and see if it lifts up.

  4. #4
    DMC Midwest - 815.459.6439 DMCMW Dave's Avatar
    Join Date:  May 2011

    Location:  Crystal Lake IL

    Posts:    5,162

    My VIN:    05429

    At a relatively slow speed (15-20 mph) shift it to 3th gear, rev engine a bit, and let the clutch pedal out fast. If it slipping this is when you'll feel it. Based on your description I agree with the others that it could be a mount, but that's a pretty rare failure compared to a slippy clutch.
    Dave S
    DMC Midwest - retired but helping
    dswingle@DeLorean.com

  5. #5
    Member
    Join Date:  Jan 2019

    Posts:    31

    Thanks all - had a look underneath and all mounts look good (and look like they have been replaced in the last few years). Iím familiar with a slippery clutch so thatís why I had doubts on that. It feels almost like traction control kicking in for a split second just after launch. Lug nuts are all tight and cant see anything else loose

  6. #6
    Administrator Ron's Avatar
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    FWIW, those mounts can break (separate) and look pristine.

  7. #7
    Member
    Join Date:  Jan 2019

    Posts:    31

    Quote Originally Posted by Ron View Post
    FWIW, those mounts can break (separate) and look pristine.
    Thanks Ron. Iíll ask my local to have a look as they have a better hoist. Also, it was raining so could a long shot be the rear wheels were losing grip slightly? Does a small amount of wheel slip happen in first in the D with a lot of acceleration and a wet road?

  8. #8
    Administrator Ron's Avatar
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    If you are lucky.

  9. #9
    Member
    Join Date:  Jan 2019

    Posts:    31

    Ha ha - all the power!

  10. #10
    Senior Member
    Join Date:  Dec 2016

    Posts:    263

    As a precaution, check your trailing arm bolts.

    -Ron

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