Unstable operation of the ADEF at Chery Tiggo

Unstable work is manifested in torn, unstable idle speed. It is necessary to start verification with the most inexpensive and easily accessible nodes.

The most probable cause for this behaviour is the recycling of crankcase gases (PVC), which is often refused by Tighgo. To verify that it is working, it is necessary to remove the recycle tube from the valve cover, rein it, and try the test.

If the problem is in the valve, the problem will disappear. The valve will need to be replaced.