After work intended to address a high idle just after a cold start, repeat the original conditions in a safe place and check whether the symptom returns. Record ambient temperature and how long the idle takes to settle. Record the result before clearing codes or resetting adaptations.
Follow the maker’s procedure for drive cycles and readiness monitors. Compare behavior with the owner’s manual and check for an intake hose left loose after service. If the issue remains, return to the evidence instead of swapping another part.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.