I have a 95 f150, ok Where do i start. The typical slider broke between the key cylinder and the slider start switch box to start and stop the truck, I have it rigged for know to be able start and stop . Ok now the truck wants to die when shifting into a gear or when i come to a stop and the speedo is jumpy. Did i manhandle something to hard when dismantle the dash to check out the key issue and How i got it to stop when the key issue first started i pulled a random relay in the main fuse box cause it wouldn't kill when i try to dissconnect the battery, pulling that relay killed it instantly. and the same relay when i got home. I looked it up and it was the powertrain relay so did i mess something up pulling that while it was running. Didn't have any issue at all driving before this. Tried switching with a different relay and no change

 

https://www.f150forum.com/f10/how-re...es-obdi-10907/
vss also?