I have a 1978 Thunderbird that's idled too high? Wut shud I do?
Check for vacume line leak,s and maybe check the intake gasket for leak,s.
You don't say how long it has been like this or if it just happened. TST above is probably got it... vacume line has either come loose or rotted. (the car is 36 years old so anything is possible. more info would help.
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