Q: Turned on heater car started shaking turn it off and on it stopped shaking never did it again. Was snowing why did it do thst?

asked by on February 23, 2018

Turned on heater car started shaking turned it off and on it stopped shaking never did it again. First time it ever happend. What was it?

My car has 150000 miles.
My car has a manual transmission.

Hi Tony. Thanks for sending your question to us tonight. When you turn on a heater or AC unit, it causes additional drag on the engine. This can cause small issues like clogged fuel injectors or other components failures to cause engine rattling issues. Sometimes this could be an indication of a vacuum system leak as well. Since you had a single-time incident, it might be a good idea to have a professional mechanic inspect your car to attempt to replicate the symptoms and determine what is causing this issue.

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