DAVID MACK

Hey everyone: replaced the circut breaker to the vcu she fired ran great then died. I dont see any fuel in the water seperator

now she just cranks hard with a code 23 thanks to all who have been helping me.

that's the "Intake Air Temp Sensor".

My link

thank you for your help

Hello, I am getting a code 23 out of the lightning bolt on my 2000 mack vision?

thanks for the previous help on the circut breakers.

If the lightning bolt light is on, you can turn off the cruise control and press and hold the set/decel button to get the code. The lightning bolt will flash, pause, then flash some more. Count the number of flashes.

For example, one I see from time to time is "blink blink blink blink (pause) blink" would be a 4-1 code...which on my '01 CH is for the Vehicle Speed Sensor. Another is "blink (pause) blink blink blink"....or the 1-3 code for the fuel temp sensor.

There may be more than one code...and once it has run through all of the codes causing the light to be on, they'll repeat. Not sure if it's necessary or not, but I usually keep holding the set/decel until I've seen 'em all and they start repeating.

If the codes don't tell 'em what's wrong, it'll at least give 'em a jumping off point for where to start looking.

thanks i will check it out

have a mack vision getting the lightning bolt light and then truck shutting off. now truck will start but not keep idle

was told could be a bad circut breaker? its not the coolant sensor thanks for your help