wont start

[kaw2000]

Hi, I have a 92 4.0l that wont start. I have pressure at the fuel rail and I get spark. The engine will cough alittle when I first start to crank it. Battery has good charge and engine cranks at normal speed. My jeep ran find until last saturday when it was close to 0 degrees outside and it almost started but nothing since then. I dont know if the cold was a factor. I have it in my garage now and it has been above freezing since that morning. I shot ether into the intake and it still wont fire so I dont think its a fuel problem. If I have a bad CPS would I still get spark????
Thanks for any help, Mark.

	Crank position sensor A crank sensor is a component used in an internal combustion engine to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control ignition system timing and other engine parameters. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.

[XJNick]

Yes, you could still get spark with a bad CPS, however the spark could be at the wrong timing, etc... since with a bad CPS the ECU can loose track of TDC and Engine RPMs.

-Nick

	Crank position sensor A crank sensor is a component used in an internal combustion engine to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control ignition system timing and other engine parameters. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.

[kaw2000]

Thanks Nick, I will replace the CPS unit. Mark.

	Crank position sensor A crank sensor is a component used in an internal combustion engine to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control ignition system timing and other engine parameters. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.