This afternoon, I jacked up Giddyup and crawled underneath in order to replace her original Crankshaft Position Sensor that MIGHT have caused the warm crank/no start situation which happened out of the blue a few weeks ago though has not repeated since.
Replacing the CPS from underneath was definitely a squeeze for my hands and the few tools needed, but also meant that I did not need to remove anything except the parts involved -- the heat shield over the CPS (2 10mm bolts), the sensor itself (5mm allen head) , and I also did unscrew the pigtail hold down bracket (8mm bolt) to make disconnecting and inserting the new sensor into the bracket easier, since I couldn't see how those parts actually locked together until after I removed them. Job was done in less then an hour, including rotating the tires.
Then I crawled on top of the engine and also replaced the Camshaft Position Sensor for good measure. EZ-PZ done in 5 minutes.
Finally I replaced the Auto Shut Down relay in the fuse box, just in case it was "sticky" and contributing to the pesky crank/no start.
Of course, that didn't take but 30 seconds, with most of that spent trying to find my glasses in order to read the tiny print on the lid to identify the correct relay.
Below are pics of the Standard Motor Products part numbers for the sensors.
Note that the Cam sensor is repackaged and made in Italy, so likely OEM, though the Crank sensor is "Hecho in China"
I have since learned from a knowledgable LostJeeps member that the Crank sensor from Autozone's house "Duralast" brand can be a repackaged OEM Bosch sensor, but that was only after I had ordered both the parts from Rock Auto. So far I have had only good quality experiences with SMP ignition parts and sensors and I got both for $80, which is less then the cost of one from IDP. That said, it would be a good idea to check with your local Autozone for these parts to see if you can get OEM quality for even LESS monies.
Replacing the CPS from underneath was definitely a squeeze for my hands and the few tools needed, but also meant that I did not need to remove anything except the parts involved -- the heat shield over the CPS (2 10mm bolts), the sensor itself (5mm allen head) , and I also did unscrew the pigtail hold down bracket (8mm bolt) to make disconnecting and inserting the new sensor into the bracket easier, since I couldn't see how those parts actually locked together until after I removed them. Job was done in less then an hour, including rotating the tires.
Then I crawled on top of the engine and also replaced the Camshaft Position Sensor for good measure. EZ-PZ done in 5 minutes.
Finally I replaced the Auto Shut Down relay in the fuse box, just in case it was "sticky" and contributing to the pesky crank/no start.
Of course, that didn't take but 30 seconds, with most of that spent trying to find my glasses in order to read the tiny print on the lid to identify the correct relay.
Below are pics of the Standard Motor Products part numbers for the sensors.
Note that the Cam sensor is repackaged and made in Italy, so likely OEM, though the Crank sensor is "Hecho in China"
I have since learned from a knowledgable LostJeeps member that the Crank sensor from Autozone's house "Duralast" brand can be a repackaged OEM Bosch sensor, but that was only after I had ordered both the parts from Rock Auto. So far I have had only good quality experiences with SMP ignition parts and sensors and I got both for $80, which is less then the cost of one from IDP. That said, it would be a good idea to check with your local Autozone for these parts to see if you can get OEM quality for even LESS monies.
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