nismochasse
NAXJA Forum User
- Location
- US
Hello everyone. I'm in a bit of a tight spot and could really use some help.
I have a 2000 XJ that I just put a re manufactured 4.0 into. I tried to start it today and it will not start. I ended up putting a new CPS and cam position sensor in.
When the CPS is unhooked it will just crank like it wants to start but nothing happens. When the CPS is plugged in it will backfire through the intake and kind of bog down and the dash lights dim. There is no "no bus" in the odometer.
I didn't align the cam position sensor at first, but when I realized that I needed to I set #1 to tdc and put the shaft back into the oil pump. Here is where I had to get a new sensor because I forgot to take out the allen wrench that I used to align the sensor and shaft :gonnablow But the top of the shaft spins freely and doesn't interfere with the cam sensor so I think it is still good...
The battery was only reading 10 volts but even hooked up to a charger it wouldn't start. I am getting spark and fuel. All the sensors and grounds are hooked up that I can see.
Could something be mechanically wrong with the timing parts inside the engine? Do I need to adjust my TDC some since it was approximate when I set it? I can't find a mark on the damper pully to match up with the timing marks on the timing cover. Do I need to set base timing somehow?
Thanks for any help.
I have a 2000 XJ that I just put a re manufactured 4.0 into. I tried to start it today and it will not start. I ended up putting a new CPS and cam position sensor in.
When the CPS is unhooked it will just crank like it wants to start but nothing happens. When the CPS is plugged in it will backfire through the intake and kind of bog down and the dash lights dim. There is no "no bus" in the odometer.
I didn't align the cam position sensor at first, but when I realized that I needed to I set #1 to tdc and put the shaft back into the oil pump. Here is where I had to get a new sensor because I forgot to take out the allen wrench that I used to align the sensor and shaft :gonnablow But the top of the shaft spins freely and doesn't interfere with the cam sensor so I think it is still good...
The battery was only reading 10 volts but even hooked up to a charger it wouldn't start. I am getting spark and fuel. All the sensors and grounds are hooked up that I can see.
Could something be mechanically wrong with the timing parts inside the engine? Do I need to adjust my TDC some since it was approximate when I set it? I can't find a mark on the damper pully to match up with the timing marks on the timing cover. Do I need to set base timing somehow?
Thanks for any help.