help
#1
11-01-2011, 12:10 PM
help
one of my customers swap a 5.7 for a 7.4 it is a 96 1 ton 4wd everything seems to work and it runs great but the speedo now works like a tac any thoughts
#2
11-01-2011, 05:09 PM
Does the truck have a tach? If not the ECM that they used for the 7.4 may have had one. Might need to get a cluster with a tach.
#3
11-02-2011, 01:48 PM
yes it does have a tach and as an exp. i found and clipped the tach feed and it still happens i am 4th tech to l ook at it and one of those was the dealer lol
