Help!! no bu5
09-22-2012, 09:09 PM
#1
Junior Member
Thread Starter
Join Date: Oct 2011
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Help!! no bu5
Ts displaying me this on my 00 xj
I replaced crankshaft sensor
There is fuel in my rail
What else could it be ?
I feel sad when my xj is not working
I replaced crankshaft sensor
There is fuel in my rail
What else could it be ?
I feel sad when my xj is not working
09-22-2012, 10:26 PM
#2
CF Veteran
Join Date: Apr 2009
Location: Kalamazoo, MI
Posts: 1,601
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L with throttle body spacer and cold air intake, bored throttle body, #784 injector upgrade
If its reading no bus ( looks like no bu5 ) on your dash its the gauge cluster. Sometimes pulling it out ( 15-30 min job ) and cleaning the connectors sometimes gets rid of it. Otherwise you might need to replace the gauge cluster. If I am understanding you right.
09-23-2012, 06:22 AM
#4
CF Veteran
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,805
Received 99 Likes
on
88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Did the NO BUS appear at exactly the same time as the engine began to "click" and doesn't turn over?
Freshen battery connections and also freshen engine grounds. Have your battery "load tested" (free at any parts store).
Simple stuff first; gotta get that engine turning over as job #1 and then address the NO BUS if it is still there!
Freshen battery connections and also freshen engine grounds. Have your battery "load tested" (free at any parts store).
Simple stuff first; gotta get that engine turning over as job #1 and then address the NO BUS if it is still there!
Trending Topics
09-24-2012, 05:59 AM
#9
CF Veteran
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,805
Received 99 Likes
on
88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
If you have a NO BUS and the engine turns over but doesn't start, something is pulling the computer bus down.
A shorted crankshaft position sensor is a common cause but you replaced it.
Theoretically, any of the 5 volt engine management sensors (if shorted) could create your problem. Try unplugging them one by one, then with one sensor unplugged, turn the key to ON and see if your NO BUS is present or gone. If it's gone with a certain sensor unplugged, you know what sensor to replace.
If you get to the point where you have used the above technique and taken all of the 5 volt sensors out of circuit and you still have a NO BUS, the computer itself is high on your suspect list.
Good luck and keep us updated!
A shorted crankshaft position sensor is a common cause but you replaced it.
Theoretically, any of the 5 volt engine management sensors (if shorted) could create your problem. Try unplugging them one by one, then with one sensor unplugged, turn the key to ON and see if your NO BUS is present or gone. If it's gone with a certain sensor unplugged, you know what sensor to replace.
If you get to the point where you have used the above technique and taken all of the 5 volt sensors out of circuit and you still have a NO BUS, the computer itself is high on your suspect list.
Good luck and keep us updated!
Thread
Thread Starter
Forum
Replies
Last Post
pamneely
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
08-24-2014 12:46 AM
dalthanar
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
12
11-14-2011 11:54 AM
Topjimmyk
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
09-21-2010 10:07 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)