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Re: crankshaft sensor 1999 Durango
What engine?if it's a 5.2 l V8,you could remove right inner fender shield for easier access..i would not remove trans..if you remove trans and then install sensor to engine,you could break it reinstalling trans..if it's a 4.7..sensor is in block..these can be really tough to get out..rust forms behind sensor and it will not come out..most times these come out in pieces
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could be crank sensor or possibly the auto shutdown relay. use a test light to check for voltage at the coil. Hook the test light clip to ground and back probe the dark green/orange stripe wire at the coil connector. With the key on, the light should light. If not, swap the relay with another similar one--say the horn relay and try again. If still no voltage, interrogate the relay socket per instructions here: http://www.fixya.com/cars/r6022358-relay_check . If there is power at the dark green wire, check the connector on the crankshaft sensor. I have pasted your wiring diagram as well as instructions for checking and replacing the cranks sensor below. Please let me know if you have questions.
Crankshaft Position Sensor TESTING
On the 2.5L engine, the Crankshaft Position (CMK) sensor is located near the outer edge of the flywheel (or starter ring gear). On other models it is fitted to the right side of the engine block.
The only test you can perform without a DRBII scan tool, or equivalent, is a basic check of the sensor only.
Disconnect the sensor harness connector from the main wire harness connector.
Place an ohmmeter across terminals 1 and 2 (see the illustration). The meter reading should be open (infinite resistance). If a low resistance is read, replace the camshaft position sensor.
REMOVAL & INSTALLATION
All Except V-10 Engine
Remove the air cleaner assembly if necessary for access to the sensor.
Disconnect the pigtail harness from the sensor.
Remove the nut holding the sensor wire clip to the fuel rail mounting stud.
Remove the sensor mounting hardware, then the sensor.
Remove the clip from the sensor wire harness.
Install the sensor flush against the opening.
Install and tighten the bolts or nuts, as applicable.
Install the electrical connector.
Install the clip on the sensor wire harness.
Install the clip over the fuel rail mounting stud. Install the clip mounting nut.
The crankshaft position sensor is on the right side of the engine just to the rear of the right hand exhaust manifold, the sensor is attached to the block with two bolts, part of the sensor overhangs the transmission bell housing. Look at the bell housing and start going up, you will see the sensor almost inline with the right exhaust manifold. It has a gromment that overhangs the transmissions bell housing. Use a flashlight from below and you will see it,
If the check engine light is on, take the vehicle to an autoparts store and have them scan the computer for fault code(s). Most parts stores offer this service at no charge. Getting the codes will go a long way toward figuring out what the problem might be. Hope this helped and best wishes.
The sensor is bolted to the top of the cylinder block near the rear of right cylinder head
Note: The sensor is accessed by removing the right front fender liner
Remove right front tire and right front wheelhouse liner. Disconnect crankshaft position sensor pigtail harness from main wiring harness. Remove two sensor (recessed hex head) mounting bolts on the Crankshaft Position Sensor Remove sensor from engine.
INSTALLATION Position crankshaft position sensor to engine. Install mounting bolts and tighten to 8 N·m (70 in. lbs.) torque. Connect main harness electrical connector to sensor. Install right front tire and right front wheelhouse liner.