grand cherokee wont start HELP

[dksob81]

are you sure it didn't flash 1 time short pause 2 times long pause 5 times short pause 5 times?

[jrsjunkyard]

Yes You Are Right I Just Looked At It 1-2-5-5

[dksob81]

code 12 - battery was disconnected within the last 50 ignition Cycle.

Code 55 - End of fault codes.

When was the last time you disconnected the battery? Have you attempted to start the jeep since disconnecting the battery?

[mrtv99]

hey i am having the same problem and can't get the engine to start, i don't have spark, i am thinking it is probably my distributor, because i have already changed my spark plugs and wires

[dksob81]

Originally Posted by mrtv99

hey i am having the same problem and can't get the engine to start, i don't have spark, i am thinking it is probably my distributor, because i have already changed my spark plugs and wires

your NO SPARK issue code be related to a bad Ignition Coil, Cam Sensor or Crank Sensor (CPS).

does you CHECK ENGINE light come on when yuo turn the key to the on POsition>

[mrtv99]

yes but i got the 1-2-5-5 also because i had undone the battery before i saw this post on here, the engine turns over but will not start, and there is no spark at the coil, so i am thinking about changing the coil pack.

[dksob81]

Originally Posted by mrtv99

yes but i got the 1-2-5-5 also because i had undone the battery before i saw this post on here, the engine turns over but will not start, and there is no spark at the coil, so i am thinking about changing the coil pack.

Before replacing Ignition Coil!
Does your CHECK ENGINE light come on when you turn the key to the ON position?

[mrtv99]

yes it does come on

[dksob81]

ok, well that takes care of the CPS as the problem. It could be the Ignition Coil or the Cam Sensor and it could also be a wiring problem to the Cam Sensor or to the Ignition Coil itself.

First, I would check the 8volt supply wire at the Cam Sensor, it is the WHITE/BLACK wire, you should have at least 8 volts with the key in the ON position (furthest forward without cranking the engine.

[bonnyclubber]

there are two sensors in series that can prevent spark.. the crank position sensor and a camshaft position sensor in the distrubtor. there are instructions in the haynes manual to do an error code check...also check the plug for cam position sensor is it connected?

[mjlecomte]

".....ok, well that takes care of the CPS as the problem. "


I'm having similar problem, cranks good, no start. Changed spark plugs, no help. spark plugs smelled of gas when I took them out. NO ENGINE LIGHT COMES ON. So does that mean I have CPS problem? From other research seems like I may have IAC problem? How do I know it's not the distributor cap?

Other symptoms: was starting rough for some time. It would start, but run very rough, like it was misfiring or something, very rough idle....when you pressed on accelerator it would bog down and virtually die, if you let it run idle...either no problem at low rpm or would sputter. Turn it off for a minute and crank it up and it would run fine. Once it was on and running there would be no problems. So it was intermittent problem, sometimes starts and runs fine, other times starts and runs very rough. Now it won't even start. Help!!