Broken spedometer and check engine line - 96 Metro

The car is a 1996 Geo Metro.

Recently the spedometer broken. Soon after that (literally the same day), the 'Service Engine Soon' light came on. Would a broken spedometer cause that?

Thanks.

Reply to
David Anderson
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It could if the engine computer needs vehicle speed, such as to control a lockup torque convertor on an automatic transmission.

Reply to
TCS

It's probably not the speedometer that broke, but the vehicle speed sensor that provides its input. The ECM needs this input to control other engine functions, therefore the Service Engine Soon light when it fails.

Reply to
Robert Hancock

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