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86 K10 temp. gauge goes to hot and engine dies, but engine

Customer Question
is still cool JA: Does the...
86 K10 temp. gauge goes to hot and engine dies, but engine is still cool
JA: Does the vehicle have a carburetor?
Customer: yes
JA: What is the make/model of your car?
Customer: 86 chevy K10
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.Category: Chevy
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Answered in 6 minutes by:
10/8/2017
Chevy Mechanic: Mike S., Chevy Mechanic replied 1 month ago
Mike S.
Mike S., Chevy Mechanic
Category: Chevy
Satisfied Customers: 7,645
Experience: ASE Certified Master Technician
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Hi, I am Mike, welcome. I'm reviewing your question.

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Chevy Mechanic: Mike S., Chevy Mechanic replied 1 month ago

How long does it take after starting a cold engine for the gauge to read hot?

What engine is this?

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Customer reply replied 1 month ago
driving maybe 10 to 15 minutes with gauge reading normal, gauge goes to full hot and engine dies. The thermostat has been changed along with the water pump. the engine is a 350 V-8.
Chevy Mechanic: Mike S., Chevy Mechanic replied 1 month ago

It sounds like there is something wrong with the wiring or and/or instrument cluster. Since it has a carburetor, it must somehow be shutting down the ignition. Let me take a look over the wiring diagram and see if there is anyway that it can possibly even do that.

Would you happen to have a tachometer on that vehicle or even a hand held one?

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Customer reply replied 1 month ago
It's my grandson's truck and I'm at work , I don't know if there is an in-dash tach., but I do have a hand held
Chevy Mechanic: Mike S., Chevy Mechanic replied 1 month ago

Ok, when you get home see if when using the hand held tach if while the gauge is rising to hot or while the engine is stalling or even afterward if it won't start back up if there is a rpm. Of course the cranking rpm will only be around 100 while the running 1,000 roughly or more

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Chevy Mechanic: Mike S., Chevy Mechanic replied 1 month ago

any news?

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Mike S.
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