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Unread 04-05-2013, 08:27 PM   #1
SuprChargerHVN
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HELP!! engine swap nightmare 98 5.9

I just did an engine swap on my 1998 5.9 limited. I know the engine i put it in ran, as did the one that was in my jeep when i pulled it out. I put the new engine down in it and it will not fire at all. I am getting no spark. I do have fuel at the rail, but the injectors are not pumping fuel into the motor either. I have changed the cam sensor, and the coil pack. I grabbed a computer from the junk yard (numbers not matching, but worth a shot.) and still nothing at all. No fuel, no spark, no firing up. Anyone have any idea what my missing X factor here could possibily be?

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Unread 04-05-2013, 08:29 PM   #2
Texas ZJ1
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Battery connected?
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Unread 04-05-2013, 08:42 PM   #3
kensnelling
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Check your crank sensor to make sure it's not damaged. Go back and double check everything that you disconnected/reconnected during the swap. Make sure you didn't pinch or otherwise damage any wiring when you installed the engine.

Double check everything no matter how insignificant or silly (is the rotor installed?) and usually you'll find the problem.

Ken
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Unread 04-05-2013, 08:46 PM   #4
Corrupt
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You may have damaged the CPS when you were connecting the trans to the motor. I believe there is a test you can do on these to find out if they are good or bad.
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Unread 04-05-2013, 09:10 PM   #5
SuprChargerHVN
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i can try the spare cps that i have there. it wouldnt hurt anything. Ive checked, and re checked my wiring more times than i care to. Ive spent almost every evening this week trying to trouble shoot my problem. Yes my battery is connected, I know the cam positioning sensor wire got in between the torque converter and the bellhousing, so i did change that. other than that im lost. Im going to double check all my wiring one more time tomorrow. If i cant come up with anything this weekend then i guess im going to have to tow it to a garage, as much as i dont wanna do that. But if you guys think of anything else, please let me know. thanks everyone for the help
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Unread 04-05-2013, 09:28 PM   #6
ZeeJay1997
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disconnect tps, turn key on and check to see if you have 5 volt reference across the two outside contact on the connector. This will tell you if the PCM is alive. May be a blown fuse or a short on the circuit causing the problem.
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Unread 04-05-2013, 09:38 PM   #7
SuprChargerHVN
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thank you very much
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Unread 04-06-2013, 06:25 AM   #8
Texas ZJ1
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At this point, it'll be something really easy to fix. You've been over it, take your time and you'll find it.

Hunter
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00 4.7 Laredo...stock

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
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Texas Jeep Owner #6
USN Jeep Club #4
http://www.kevinsoffroad.com/
602.841.3355

For your performance needs:

kolak@kolakperformance.com
480.998.3661
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Unread 04-06-2013, 11:53 PM   #9
SuprChargerHVN
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Well I figured I would post an update. I got the number running today. The crank sensor was junk. I pulled it out in 3 pieces, the wiring, the mount, and the rest of the sensor which fell down I to the bell housing.
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Unread 04-07-2013, 08:44 AM   #10
ratmonkey
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Always remove them when doing transmission or engine removal/replacement.
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