Poor Gas Mileage, No CE Light but many codes

[jkennedy3489]

Good thought, I hadn't really considered this possibility as all of the wiring was already in place but it would be worthwile to disconnect and see if the codes go away. I will give this a shot tonight and let you know! The timing for the mileage change does coincide pretty close with the installation.

[CTScott]

Originally Posted by jkennedy3489

Good thought, I hadn't really considered this possibility as all of the wiring was already in place but it would be worthwile to disconnect and see if the codes go away. I will give this a shot tonight and let you know! The timing for the mileage change does coincide pretty close with the installation.

Ah, actually since you have an 09 you didn't mess with the ECM connector, so it really should not be that. Take a good look at your battery terminals for corrosion and at all of the ground straps (places where a wire is screwed into the chassis) under the hood.

[bronsin]

Originally Posted by jkennedy3489

Good thought, I hadn't really considered this possibility as all of the wiring was already in place but it would be worthwile to disconnect and see if the codes go away. I will give this a shot tonight and let you know! The timing for the mileage change does coincide pretty close with the installation.

That would be my first move! Also check that nothing else was disturbed during the install.

Ive had my $10 cc on my 09 for four years now and its been flawless. I have the four momentary switches in a diamond pattern with ON up, SET to the left, RESUME to the right and CANCEL on the bottom. Its so easy to operate compared to the stalk mounted cc of others cars!