Most times when engine is cold, it has very low power until it warms up. Runs fine after. Garage mechanic said it would be very expensive to diagnose and isolate problem. He suggested since it runs fine after warming up, not to worry about it. Anyone have suggestions on what to have checked?

Check ignition & ignition timing.
vacuum leaks.

thanks

Check your ECT sensor.

Check your ECT sensor.

Thank you

ck the compession. How many miles do you have on your car? Make sure all the basics are ok before going to electronics.