Secondary circuit malfunction
11-12-2012, 06:06 PM
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Year: 1998
Model: Cherokee
Engine: 4.0 I6
Secondary circuit malfunction
Gotta grand cherokee for the wife and its got low power runs and drives but misfires code says secondary circuit malfunction...I'm stumped...bad coil pack rail, pcm?...not a bad cat just replaced that still didn't work help
11-12-2012, 06:26 PM
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
I would say it's the coil pack, but I have no idea if you have the coil pack because you did'nt say what year your rig is.
11-12-2012, 08:04 PM
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Year: 1998
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Originally Posted by Bustedback
I would say it's the coil pack, but I have no idea if you have the coil pack because you did'nt say what year your rig is.
11-12-2012, 08:08 PM
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Year: 1998
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Originally Posted by Reddskie
Sorry it is a 99 4.0
11-12-2012, 08:59 PM
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Year: 1995
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An easy way? not really without a scan tool that can do function tests. I would just replace the coil rail, they're not as expensive as you would think. www.rockauto.com will have it.
11-13-2012, 05:19 AM
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Year: 1998
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An easy way? not really without a scan tool that can do function tests. I would just replace the coil rail, they're not as expensive as you would think. www.rockauto.com will have it.
11-13-2012, 08:12 AM
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Year: 1995
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Engine: 4.0 with all of the noise and clatter
You can find the old Snap-on scanners on ebay for around a hundred bucks, just have to make sure all of the cartridges are with it.
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11-25-2012, 09:02 PM
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Year: 1998
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99 WJ 4.0 I6 220K wifes new to her first jeep
98 XJ 4.0 I6 145K my work in progress :°}
11-28-2012, 09:11 PM
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Year: 1995
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It may be a mechanical problem, start with a compression test and a leak down test if you can.
03-11-2013, 08:30 AM
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Year: 1998
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Been a while but after the spark plugs, injectors, wiring harness check, alt replace, new battery, cleaned ground straps, new coil packs....and 3 cpu,s...i bought a brandy new cpu...works great lol...figures
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