tims Posted January 13, 2022 Share Posted January 13, 2022 i have changed the speed sensor and the crank sensor. unhooked batties still has light on checked for code came up still 4 1. truck has no power and isnt spooling up. any ideas of what i can try next? Quote Link to comment https://www.bigmacktrucks.com/topic/69062-code-4-1-on-my-2004-mack-granite-cv713/ Share on other sites More sharing options...
Vmac3 Posted January 14, 2022 Share Posted January 14, 2022 Which FMI are you seeing on the fault? This will tell us what issue you are having (electrical or mechanical). What type of transmission is installed on this unit? Need a little more information. There is a bulk head connector on top of the transmission where the speed sensor wires pass through and sometimes that connector does come partially loose. Make sure that connector is tight. Is the transmission output yoke tight? Is the Tone ring on the transmission yoke tight? Remove the sensor and pry on the tone ring and see if it spins, if it does then the yoke is loose. How was the sensor adjusted? Spin the sensor on until it contacts the tone ring and back it off 3/4 of a turn. This fault will not go away until the truck is driven once the correct repair is done. Let us know what you find or have done. V 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69062-code-4-1-on-my-2004-mack-granite-cv713/#findComment-487030 Share on other sites More sharing options...
tims Posted February 10, 2022 Author Share Posted February 10, 2022 thankyou for the advise put the new speed sensor in and the light went off and all power came back. Quote Link to comment https://www.bigmacktrucks.com/topic/69062-code-4-1-on-my-2004-mack-granite-cv713/#findComment-489081 Share on other sites More sharing options...
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