Engine
Rough Idle Fix: How to Smooth Out Your Engine
AutoDoc Repair Team April 12, 2024
A simple cleaning can restore your car's smooth idle. Cheap and easy DIY inside.
Authentic Automotive Guide
Introduction
If your car shakes or feels like it's going to stall at stoplights, you have a rough idle.
Causes
- Dirty Throttle Body: Carbon buildup blocks airflow.
- Vacuum Leak: Cracked rubber hoses are common.
- Dirty Fuel Injectors: Clogged from bad gas.
The Fix
Buy a $10 can of Throttle Body Cleaner. Remove the air intake tube and spray/wipe the carbon build-up off the throttle plate. It makes a HUGE difference!
Cost
DIY Clean: $10. Shop Diagnostic: $100-$150.
Accurate Repair Costs
Estimates are based on average 2024 repair data in the USA — Labor & Parts included.
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