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Old 12-26-2014, 10:37 PM
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Intermittent loss of acceleration - Jeep Cherokee

My 2007 Jeep Cherokee CRD (diesel model) has developed an intermittent fault where it suddenly loses all acceleration whilst driving, followed 2-3 seconds later by significant engine shudder as if it is going to stall, but engine doesn't actually shut off. Only solution is to pull over, turn engine off, wait a couple of seconds and then turn back on and all is good until the next episode. Happens at random speed, random distance, random temperature with no warning prior and no warning lights on dash.
Jeep's computer has been unable to detect an error code.
Would greatly appreciate hearing from anybody who might have experienced this or has any ideas on where to start looking first before we take the engine apart piece by piece!! Thanks

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Old 03-12-2015, 06:18 AM
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Re: Intermittent loss of acceleration - Jeep Cherokee

Yes, I just recently had the exact same symptoms in my jeep!
Culprit of it is in TWO areas which I had diagnosed and completely did the fix and eliminated all this sputtering and engine power loss. I too was doing the exact same thing you were doing (shutting if off then restarting it but it kept doing it so I took it in for service).
1) Replace your rotor and cap
2) Have all of your spark plug wires checked for a short, or just replace them.
3) Replace BOTH of the O2 sensors because in my case one was faulty but I just went ahead and did the pair to be on the safe side.

Lastly, use 87 octane gas. For some reason, my XJ seems to run better with no issues using the lower octane. Oh and dont use aftermarket parts, use the plain jane Jeep OEM stuff. My Jeep has been running perfect ever since I did the above!
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Old 03-12-2015, 10:31 AM
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Re: Intermittent loss of acceleration - Jeep Cherokee

Since the OP has a diesel engine in his jeep, rotor, cap, wires and plugs can not be the problem, since it doesn´t have it. Not too familiar with diesel engines myself.
Since there is no fault code stored, it becomes more difficult to know what the problem is. It could be a fuel feed problem. Maybe that you could let the HP fuel pump be tested, eventhough it working normally after a restart would point toward a sensor. Maybe some more experienced diesel guy can chime in.
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Old 08-10-2015, 01:55 AM
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Re: Intermittent loss of acceleration - Jeep Cherokee

I've got the same problem on my 2005 Jeep Cherokee 2.8 CRD and can not get the fault
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Old 01-15-2016, 06:53 PM
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Re: Intermittent loss of acceleration - Jeep Cherokee

Check for vacuum leaks on the lines especially running along the undercarriage generally linked to any fuel delivery and compression chambers. There is a section towards the rear axle that tends to rust out and cause serious headaches, but is about a $5.00 fix...
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