I have a MY98 terzo. 1st problem is my speedo has stopped wrking. 2nd every time i slow down cuming up 2 junction etc my revs drop and the car stalls. Had well lane turbo center do a diagnoses test, the codes he came up with are 24/23/11/13.
Has anyone had this problem before if so which of these sensors needs changing. Also are both problems related.

THANKS

 

can any1 help???