2006 Honda Odyssey: Check fuel cap and engine surge?

Check fuel cap message comes up and Engine surge while driving.
Fuel cap gets cracked or worn out or gets loose and cause emission leak.

In this case before having the dealership do any diagnostics, you need to install a Honda fuel cap. Most aftermarkets fuel caps don't seal properly which will cause an evpaorative emission leak in the system due to poor seal.

If, after installing a factory fuel cap, you still have an issue, then the system will need to be smoke tested for where the leak in the evaporative system is that is still setting the warning message and causing surge you feel.

This will help.
Thanks.

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Low idle when cold out side?

Car has low idle when cold outside,but runs fine when warm outside.

This are possibilities,which can cause the problem.
Idle air control valve. Egr pressure valve. ambient air temp sensor.A basic problem noticed in this cases is engine urges up and down and straighten out when warm.

This problem is not exactly related to vacuum leak.But if all checked ok,then don't ignore checking for vacuum leak.

If you notice check engine light remaining steady with this problem.
OK well the light is on for a reason and you need to check out what codes are stored they most likely hold the root problem to your concern. Most autoparts stores can check for codes for free and tell you what area to check,just remember that because it says its a code for something doesn't mean the part itself is bad it can be an electrical concern as well .

This will help.

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