03 Tacoma drive cycle

What is drive cycle my cat isn't ready

 

I had the same thing happen on Monday. The tech told me drive 40-45mph for the cat to be ready.

Here’s the rest-

A. Start the engine and allow it to idle for 10 minutes or more.
B. Drive the vehicle at 43-56 mph or more for 3 to 5 minutes. Be sure to maintain engine speed between 900 and 3,200 rpm.
C. Stop the vehicle and allow the engine to idle for 3 to 5 minutes.
D. Repeat steps B and C once.
E. Drive the vehicle at 40 mph to 55 mph for 3 minutes.
F. Drive the vehicle 35 mph to 45 mph for 7 minutes.
G. Stop the vehicle and turn off the engine. Release the pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
H. Start the engine and as soon as safely possible begin driving at approximately 45 mph for 5 minutes.
I. Drive the vehicle at approximately 25 mph for 15 minutes, and include a minimum of two stops for approximately 30 seconds each.
J. Stop the vehicle and allow the engine to idle for 2 minutes.
K. Drive the vehicle at 25 mph or more for at least 50 seconds. Make sure your engine speed is above 900 rpm.
L. Stop the vehicle and allow the engine to idle for 40 seconds or more.
M. Perform steps “K” and “L” ten times.

 

what they didnt tell you...

Begin by: (Make sure you have between 1/4 and 3/4 fuel in the gas tank. The EVAP test will not run while your truck has a full tank of gas or the gas tank is near empty). Ensure there are no pending or active trouble codes and that the check engine light is not on.

I have had more "luck" getting the CAT monitor to clear after descending a long hill with closed to partial throttle... then repeat the partial, then closed.

 

And bring it in right after it's ready. You may have trouble brewing.


OR.....you might still have winter gas. My Sienna has a 420 all winter every winter.

 

My truck failed the visual today because the guy couldn’t see my cats because they’re partially blocked by the skid plates, thought my fuse block was a fuel modification and my auxiliary fuel tank evap is tied into the stock evap system.

I went to another shop and passed with no questions asked.

 

Seriously? You have to be joking. This can’t be real.

 

Anything engineers get a hold of will quickly become insanely complicated. Lol.
Don't get me wrong...engineers do amazing things and we owe much of modern tech and innovations to them.