Posts Tagged: surging idle
Vibration at idle – Jeep
Fix Vibration at idle If you own a 2007-09 Jeep Compass or Jeep Patriot and you have a vibration at idle, start with this fix before replacing any parts. The vibration at idle affects the 2.0 and 2.4L engines. They can produce a vibration at idle an uneven or surging idle while coasting in drive at speeds up to 5MPH. Chrysler has issued a software update to correct the problem. So get that done before you replace anything else. For more information refer to Technical service bulletin 18-017-08 Rev A. … Read More
How does an idle air control valve work
What is an idle air control valve Many people are confused about how idle air control valves work. An idle air control valve literally bypasses air around a closed throttle plate so the engine can get air at idle. Because it bypasses air, it’s also called an air bypass valve. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. In fact, on many carburetors there were two idle speed adjustment screws; one for hot idle and another for cold. Turning the screw … Read More