c5 corvette dies momentarily.
Thread Starter
Heel & Toe
Joined: Apr 2022
Posts: 19
Likes: 1
From: Los Angeles
c5 corvette dies momentarily.
so the issue is as follows. I drive my car normally, and seemingly randomly the gauge cluster resets, check engine light turns on, and engine dies. half a second later the engine is back to normal until the next hiccup.
more info that could be useful: MPG data is reset after every hiccup. also just cleaned the ignition switch contacts.
more info that could be useful: MPG data is reset after every hiccup. also just cleaned the ignition switch contacts.
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
so the issue is as follows. I drive my car normally, and seemingly randomly the gauge cluster resets, check engine light turns on, and engine dies. half a second later the engine is back to normal until the next hiccup.
more info that could be useful: MPG data is reset after every hiccup. also just cleaned the ignition switch contacts.
more info that could be useful: MPG data is reset after every hiccup. also just cleaned the ignition switch contacts.
Thread Starter
Heel & Toe
Joined: Apr 2022
Posts: 19
Likes: 1
From: Los Angeles
BTR stg4 cam pushrods double valve springs, port polished heads, full custom exhaust with catless headers, built transmission. very light build. i cleaned the ignition switch contacts because my other corvettes had a similar problem turning off randomly, and cleaning those fixed it. i just bought the car with the issue already present.
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
thanks for the response. the car has as follows:
BTR stg4 cam pushrods double valve springs, port polished heads, full custom exhaust with catless headers, built transmission. very light build. i cleaned the ignition switch contacts because my other corvettes had a similar problem turning off randomly, and cleaning those fixed it. i just bought the car with the issue already present.
BTR stg4 cam pushrods double valve springs, port polished heads, full custom exhaust with catless headers, built transmission. very light build. i cleaned the ignition switch contacts because my other corvettes had a similar problem turning off randomly, and cleaning those fixed it. i just bought the car with the issue already present.
All standard rules apply here. Inspecting all engine/chassis grounds and power connections. Common areas where grounds are left loose are rear left cylinder head and lower left engine block. I would check everything.
Thread Starter
Heel & Toe
Joined: Apr 2022
Posts: 19
Likes: 1
From: Los Angeles
If you are sanding the contacts on the ignition switch for the cleaning (like most seem to do).....that is just a band aid. Once the plating is removed from arcing, corrosion, or sanding...the problem will definitely happen again.
All standard rules apply here. Inspecting all engine/chassis grounds and power connections. Common areas where grounds are left loose are rear left cylinder head and lower left engine block. I would check everything.
All standard rules apply here. Inspecting all engine/chassis grounds and power connections. Common areas where grounds are left loose are rear left cylinder head and lower left engine block. I would check everything.
Thread Starter
Heel & Toe
Joined: Apr 2022
Posts: 19
Likes: 1
From: Los Angeles
End of thread-solution
so i pulled the BCM out of the car and swapped it with another BCM i had on the shelf. did the relearn blah blah. same issue. so i pulled the harness out and inspected for broken/melted wires. there were a few that looks messed up so i replaced the section of weird wires with some in my box. i then cleaned all the connections on the pigtails to the BCM, using baking soda and water. all that combined, car drives as normal now. thanks for the attempts to help. hope this can help someone in the future.
Last edited by ralph_c5; Oct 25, 2024 at 06:03 AM. Reason: spelling error
Tech Contributor
Joined: Jan 2007
Posts: 19,398
Likes: 1,139
From: Dyer, IN
so i pulled the BCM out of the car and swapped it with another BCM i had on the shelf. did the relearn blah blah. same issue. so i pulled the harness out and inspected for broken/melted wires. there were a few that looks messed up so i replaced the section of weird wires with some in my box. i then cleaned all the connections on the pigtails to the BCM, using baking soda and water. all that combined, car drives as normal now. thanks for the attempts to help. hope this can help someone in the future.
Never introduce water to an electrical connector on purpose. Water has been the demise of many BCMs.
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Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,508
Likes: 4,000
From: Cape Coral, Florida
I see you were having more issues…seeing you are the young owner of an auto shop I’d invest in a labscope (preferably an 8 channel) if you don’t use one already…don’t know how you can diagnose cars without one…best thing to use on connectors is Deoxit…not baking soda and water !!
