20k on 4.0 rebuild. Engine dies
So, I rebuilt my 4.0 about 20k miles ago. I was driving it and everything seemed normal until I gave it some throttle and it started sputtering. It smoothed out and was fine until I got home. I went out to start it about 10 min after the trip on the highway and it revved, sputtered and died at idle. Now a day later it idles for awhile and then dies. If I give it any gas it shudders and dies. Any ideas?
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Check fuel pressure?
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Fuel pressure is good. Cam sensor and coil rail codes are showing up on the scanner. Going to try the sensor first
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Sounds like a good place to start.
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Regarding rough running
If you have a rusted muffler and/or catalytic converter it can plug up the exhaust gasses and cause you all kinds of havoc. Happened to me.
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There is nothing in stock locally. Just ordered a mopar cam sensor, an airtex viper coil, a patch cable for the coil and a universal plug wire set.
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Originally Posted by Precept
(Post 3402972)
If you have a rusted muffler and/or catalytic converter it can plug up the exhaust gasses and cause you all kinds of havoc. Happened to me.
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Check for vacuum leaks. And that belt sounds horrible.
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It could be electrical too. I had my Jeep sit for a few months while I took my time replacing the front suspension. When I got it running again, the alternator had seized. After I changed it, the old battery wouldn't hold a charge anymore, so it would idle for a little bit after startup and then die.
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Originally Posted by fb97xj1
(Post 3403527)
Check for vacuum leaks. And that belt sounds horrible.
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9It's back to life! Replaced the cam sensor and set the timing. I replaced the coil rail with the viper coil and now it seems to be good. Haven't gone on a drive yet because I have to figure out where the coil is going to be mounted
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