Question about Jeep Grand Cherokee

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Jeep Grand Cherokee 2000 V8 Quada track - shutters at times while moving sort of like a cylinder misfired. Usually when warm but no code is identified. Occasionaly the engine dies at a stop but starts right back up. Initially thought it was transmission until it died at a stop but now I believe it is in ignition but not codes to check. Had it in shop with code reader attached but no codes. Does anyone have an idea ?

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OK do the usual, check your plugs and check your plug sockets and leads for signs of shorting out against the cylinder head etc check the cap and distributor. My guess is that at least one of your coils (on plugs) has failed and this will reveal itself by the state of the spark plug(s) associated with it (them). Sudden stall when coming to halt with a hot engine and then to have immediate start up is almost always due to faulty coils(s). Strangely the propensity to stall is often reduced when the engine is still cold!!

Posted on Sep 02, 2010

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