I am new to the forums. i did a search and didnt turn up anything, so here goes. MY father in law has a '01 cherokee with the inline 6. the other day it wouldnt start, been running fin up until then. looked into it a little bit and noticed that it wasnt getting any fuel at the fuel rail. so we checked relays and fuses and everything was good. so we decided to replace the fuel pump. $120 later the jeep still isnt running, no fuel pressure. He told me that he had an error on his dash that read no bu5 before we did all this. also, the gas guage is at empty, but there was definitely gas in there. any help is greatly appreciated
The "no bus" on the cluster is generally a loose connection in your dash. It is easy to pull the dash apart, pull out the cluster, clean the connections and put a little dielectric grease on it and put it back together. Might want to try that before tackiling anything else. It is the cheapest option.
When I die and go to heaven I hope the first thing God says to me is "The bar is right this way."
the way i understand it when the pcm fires up it checks the cps. it the cps checks out good it the turns on the asd relay which in turn, turns the fuel pump and injectors on. something in that whole chain triggers the no bus. most no buses are due to a bad cluster connection. but not all no buses are are a bad cluster connection. i have heard of 4 no buses where the vehicle won't start and the cps fixed it. this is by no means gospel, just what i have experienced through friends. hopefully some more people will speak up about what they know! mike