Chrysler Repair: Car Wont Start, chrysler concorde, crank sensor


Question
I have a Chrysler Concorde 1996, 3.5 engine. The problem that I have been suffering from is that the car won't start, especially when the WEATHER is so hot (it gets over 50 C or 120 F here in Kuwait). It takes the car around 30 to 60 minutes of trying to start. A couple of times it took more than 2 hours of trying. The starter seems to be fine. When I am starting the car everything seems to be moving well, but the car just won't start. With the help of a colleague, I found out that there was no spark when the car is not starting. The strange thing is that once the car starts, it won't make any trouble if I stop the car and start it again. It starts as soon as I turn the key on. In many cases I left the car when it took too long without starting at work, and when I came the next day, it would start from the first try. I checked the Check Engine Code and I got code 11 and 34. But these codes are the same whether or not the car is ok. Some people said it may be the fuel pump, some said it is the coil, some said it is the sensor, and I don't know which one is right. Please help me.

Thanks

Sam

Answer
Hey Sam,

The coe 11 is related to cam or crank position sensor circuitry while 34 is related to speed control.  We'll ignore the second one for now and focus on the first.

The cam sensor is located on the driver's side of the timing cover directly on top next to the thermostat housing.  The cam sensor is responsible for identifying where the car shafts are in correlation to the crankshaft.  This allows for proper injector firing.

The crank sensor is located in the transmission bell housing, just above the passenger side axle area.  It is responsible for crankshaft position identification to firing the correct cylinders at the correct time.

The coil is suspect as well because it's responsible for providing spark to all the cylinders.

It could also be the computer though since it dictates when the coil field is allowed to collapse (the computer provides the ground for the coil pack) and if it's not grounding, you're not firing.

My guess is that the crank sensor is going out on you which is why you do not have spark  I would recomend replacing the crank sensor and MAYBE the cam sensor.  I would not put in a new fuel pump and other things that are not components that could cause no spark.
Doug