Forum Discussion

sealevel_ram's avatar
sealevel_ram
Explorer
Mar 05, 2016

Engine Quits When Brakes Applied

Took my 04 Winnebago Ultimate Freedom out of the garage for short trip. Beautiful day. Beautiful unit. Cummins ISL runs beautifully at idle.

Step on brakes and engine dies. Put on emergency blinkers and engine dies. Restart and same thing happens every time.
Happens with transmission in Park, Drive, and Reverse.

Anybody have this experience, or know what is going on?
Thanks.
Class A
  • bullydogs1's avatar
    bullydogs1
    Explorer
    Mar 06, 2016
    Here's another way to prove it....after starting vehicle, hold batt bank jump switch..this will put house batteries in circuit, step on brake, if it is OK, then let go of switch, then it it dies, engine battery.
  • bullydogs1's avatar
    bullydogs1
    Explorer
    Mar 06, 2016
    Could even be bad batteries that are so dead chassis wise...that when the brake lights or other heavy draw comes on, batteries short out and engine dies....Check alternator first, if that is charging OK...it's the engine battery shorting out.
  • time2roll's avatar
    time2roll
    Nomad
    Mar 06, 2016
    Any work done recently?

    I remember finding some wires pinched behind a master cylinder another shop had replaced. Similar in quitting when brakes applied. Yours is different but still similar.
  • DrewE's avatar
    DrewE
    Explorer II
    Mar 06, 2016
    It could also be a bad ground; in fact, I would think that equally as likely as a short.
  • jfkmk's avatar
    jfkmk
    Explorer
    Mar 06, 2016
    midnightsadie wrote:
    sounds like a short in a wire ,some where.

    Agree!

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