Not an erratic idle like a dirty throttle body gives you. That goes up and down when the AC compressor kicks on, and can send the idle down to 300-400 RPM and stall the engine out. Then it overshoots when the compressor cycles off.
death rattle. a sound produced by a person immediately preceding death, resulting from the passage of air through the mucus in the throat.
What does death knell mean? Definitions for death knell Here are all the possible meanings and translations of the word death knell. Princeton's WordNet (0.00 / 0 votes) Rate this definition: death knell (noun) an omen of death or destruction. death knell, death bell (noun) a bell rung to announce a death