Flatheadx
NAXJA Forum User
- Location
- Olathe, KS
I have seen other post like mine, but none exactly like my problem. And all their solutions have not fixed mine. I have a 98 XJ it will crank but will not start. I have no fuel, or spark. Also no fuel gauge or volt meter. I have narrowed it down. And now I'm stuck...
First test was to see if there was spark and where the spark ended. I am not getting spark to the coil. Telling me it's not sending signal from the PCM.
Second test was fuel, and when jumping the relay I have my fuel pump. Meaning it to is not getting signal from PCM.
This leads me to believe that something is killing the signal to the ASD relay.
I first tested then replaced the CrankPS and the CamPS
So both are new and test fine. I have even swapped the PCM with a friend's xj, which does run and is still running. Also hooking this PCM to his, it still ran. I traced down all electrical grounds cleaning and fixing them all. Then leading to corrosion in the the fuse panel I removed it and the lower portion and begin to jump/bypass the wires to see if any wires or connection was corroded.
This is where I get stuck... when I put a positive charge to the ASD signal/power pin I get my gauges back but no start. When I charge the ground side of the circuit closing the ASD relay I get gauges and it will start right up. But to turn the Jeep off I have to turn off the key and then pop the hood and remove the ASD relay to shut the Jeep off. So I need to figure out why when I give the ASD power to its power side to activate it I get only gauges but when I out power to the ground pin i get a fully operational Jeep?
Two things that lead up to this but I can't find a relation was it over heated when the electrical fan went out and the ac was on. I replaced the fan and everything was fine. Then I replaced the shift solenoids in the transmission. (Which had been needed for a few months) And I didnt have any issues. I did have to wiggle the dip stick tube between the wiring harnesses on the rear passenger side of the motor to drop it and put it back in place. But I see no damage done. Wiggling the wires gives me no indication one was broken or loose. And all connectors are in place. It did start directly after the solenoid replacement. But when running it drive and shifts beautifully now.
First test was to see if there was spark and where the spark ended. I am not getting spark to the coil. Telling me it's not sending signal from the PCM.
Second test was fuel, and when jumping the relay I have my fuel pump. Meaning it to is not getting signal from PCM.
This leads me to believe that something is killing the signal to the ASD relay.
I first tested then replaced the CrankPS and the CamPS
So both are new and test fine. I have even swapped the PCM with a friend's xj, which does run and is still running. Also hooking this PCM to his, it still ran. I traced down all electrical grounds cleaning and fixing them all. Then leading to corrosion in the the fuse panel I removed it and the lower portion and begin to jump/bypass the wires to see if any wires or connection was corroded.
This is where I get stuck... when I put a positive charge to the ASD signal/power pin I get my gauges back but no start. When I charge the ground side of the circuit closing the ASD relay I get gauges and it will start right up. But to turn the Jeep off I have to turn off the key and then pop the hood and remove the ASD relay to shut the Jeep off. So I need to figure out why when I give the ASD power to its power side to activate it I get only gauges but when I out power to the ground pin i get a fully operational Jeep?
Two things that lead up to this but I can't find a relation was it over heated when the electrical fan went out and the ac was on. I replaced the fan and everything was fine. Then I replaced the shift solenoids in the transmission. (Which had been needed for a few months) And I didnt have any issues. I did have to wiggle the dip stick tube between the wiring harnesses on the rear passenger side of the motor to drop it and put it back in place. But I see no damage done. Wiggling the wires gives me no indication one was broken or loose. And all connectors are in place. It did start directly after the solenoid replacement. But when running it drive and shifts beautifully now.
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