94 Grand Cherokee 4.0 I6 - JeepForum.com
 
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post #1 of 4 Old 07-22-2021, 04:19 PM Thread Starter
seankuli
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94 Grand Cherokee 4.0 I6

Bought this Jeep a few weeks ago. Been sitting in a garage for a while. Replaced the fuel pump, the ECM, the rad, the A/C condenser, brakes, tires and thought it was good. It fires up cold everytime, no issues. Once the engine is warm, it will shut down while turning or at a stop light and then won't start back up again. Just cranks and cranks. Once it sits for half hour, fires right back up. and so on and so on.

149,000km. Not sure what the issue is. When I do the key flip, I get a Code 12, 11, 62 and 55. Could it be the crankshaft sensor. Camshaft sensor was replaced a few years ago.

TIA

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post #2 of 4 Old 07-23-2021, 02:54 AM
jtec
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code 11 is for no CKP (crank sensor) signal. So might want to check that out, if history is unknown I would replaace that to start.

That code 62 has me thinking - as its a PCM mileage issue - WHY did you change PCM, do you have old unit, can you contact remanufacturer of PCM to ask for advice?

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #3 of 4 Old 07-23-2021, 08:57 AM Thread Starter
seankuli
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Mechanic replaced the PCM telling me one of the connections was bad. So when I researched it, it was saying code 62, PCM failure SPI mileage not stored. I think I'll try and change the CPS first and see if that does the trick. Other than that, runs great.
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post #4 of 4 Old 07-23-2021, 11:36 AM
jtec
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FYI CKP and CPS are the same. we always suggest OEM component for this.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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