WHAT IS THE CRANKSHAFT POSITION SENSOR(CPS) ?The crankshaft position sensor is an engine management component found on virtually all modern vehicles with internal combustion engines. It monitors the position and rotational speed of the crankshaft and sends the information to the engine control unit so it can make appropriate adjustments based on operating conditions. The crankshaft speed and position are some of the most important parameters used in engine management calculations, and many engines cannot run if the crankshaft position sensor is not providing an accurate signal. WHY CHOOSE ECCPP CRANKSHAFT POSITION SENSOR ?ECCPP is a manufacturer specializing in the production of auto parts. Our sensors are made of imported engineering materials, wear-resistant and heat-resistant, long use life, and the identification of transmission engine signals is fast and accurate, which is a good choice for you to replace the sensor. Antigua and Barbuda, Aruba, Australia, Austria, Bahamas, Bahrain, Bangladesh, Barbados, Belgium, Belize, Bermuda, Bolivia, Brazil, Brunei Darussalam, Bulgaria, Cambodia, Canada, Cayman Islands, Chile, China, Colombia, Costa Rica, Croatia, Republic of, Cyprus, Czech Republic, Denmark, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Grenada, Guadeloupe, Guatemala, Guernsey, Honduras, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Jamaica, Japan, Jersey, Jordan, Korea, South, Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Macau, Malaysia, Maldives, Malta, Martinique, Mexico, Monaco, Montserrat, Netherlands, New Zealand, Nicaragua, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Reunion, Romania, Saint Kitts-Nevis, Saint Lucia, Saudi Arabia, Singapore, Slovakia, Slovenia, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Thailand, Trinidad and Tobago, Turks and Caicos Islands, United Arab Emirates, United Kingdom, United States, Vietnam The crankshaft position sensor is mounted to the transmission bell housing at the left/rear side of the engine block. The sensor is adjustable and is attached with one bolt. A wire shield/router is attached to the sensor. REMOVAL Disconnect sensor pigtail harness (3-way connector) from main engine wiring harness. This connection is made near rear of distributor. New Sensors: Be sure paper spacer is installed to bottom of sensor. If not, obtain spacer PN05252229. right from alldata. I have done hundreds of them. Roy SPONSORED LINKS Wednesday, September 12th, 2012 AT 7:32 PM Just to review: A. What happened: One week ago on a Friday, wife called and said the Jeep would not start. She and my daughter had driven up to the local mountains to prepare for my wife's class fieldtrip. She indicated that they had driven up without any car warnings. Stopped after doing a mountain road - Angeles Crest Highway - and had stopped to use the restroom and gather pine cones at the Nature Display Center at the intersection of Angeles Crest Hwy (the N2) and Angeles Forest Highway (the N3). She said that they had been stopped for about 15minutes, and when she went to start the car, it would only crank over. No combustion or attempt to ignite fuel by the engine. Thankfully some Caltrans personnel let her call AAA on their phone. AAA brought the car home. *** B. Researching the problem I then started to do google searches on: That
lead me to these articles: So, since the Jeep had been running fine without incident or warning, I concluded that the Crankshaft Position Sensor had failed. It matched the symptoms reported by those other articles: Car had failed to start without warning, usually after it was hot. *** C. Doing the Crankshaft Position Sensor Replacement Went to my local Alhambra Jeep Dealership parts counter, and asked them for the Crankshaft Position Sensor for a 1998 Jeep Cherokee Sport, 5spd, 4.0 inline 6-cyl. Yes, of course. But it was out of stock. Part number: 1-56027866AC. Cost $109, $118 with tax. They ordered the part for me, and said it would be in the next morning. To give them credit, the part was available the next day. I had to wait to the weekend to work on the car. *** To change the sensor, most of the articles were accurate, but I wanted to also document what I did to be successful. It is a very simple repair, but tricky due to the sensor hole. 1. I went under the car, as it was parked on the street, where AAA had left it for us. 2. I used an 8mm socket to disconnect the front driveshaft where it enters the front differential. There are 4 8mm screws that hold the U-joints to the driveshaft. I marked one end and the driveshaft and one set U-joint retainer, to make sure to assemble in the same position as it was removed. 3. I used a zip-tie to hold the front driveshaft to the exhaust, so it would be out of my way. 4. I used 3 sections of 6" socket extensions, and one swivel, to an 11mm socket to reach the two 7/16' bolts that hold my car's Crank Position Sensor to the bellhousing. 4a. The sensor is located where the bellhousing of the transmission mates to the back of the engine, in the 11 o-clock position, near the fuel injectors if you are looking down from the open hood, between the fuel injector nearest the firewall and master brake cylinder. I used the extensions and 11mm socket to break loose the bolts a turn or two, then stopped. 5. YOU MUST BE VERY VERY CAREFUL NOT TO DROP ONE OF THE 7/16" BOLTS INTO THE HOLE THE SENSOR IS IN. YOU WILL HAVE TO REMOVE THE TRANSMISSION FROM THE ENGINE TO FISH IT OUT IF YOU DO. 6. Once the 7/16" bolts are finger loose, I used a part retrieval tool, like http://store.summitracing.com part number SUM-900070, the kind with 4 little wire fingers, about 2 feet in total length, to grab onto the bolts and carefully carefully finish unscrewing them and removing them. This was a white knuckler. Very very scary. I took a long time, and kept making sure the part retrieval tool had a good grip on the bolt. 7. Once the two 7/16" bolts have been safely removed, then you can disconnect the sensor from the wiring harness with a 3-wire plug that is located on the aluminum air intake, near the number 6 cylinder. 8. Get the new sensor and place it into the opening. Using the part retrieval tool, use it to CAREFULLY CAREFULLY thread the bolts into the sensor into the bellhousing for a few turns, making sure that the bolts are actually engaging the threads. You do not want to have a bolt drop into the transmission bellhousing and ruin your day. 9. Then assembly is just the reverse of steps 1 to 7. Done. *** Put the key in the ignition, got very religious and pious and humble for a few heartbeats, and started the engine. It stared and ran fine within one second! Success! Tags:
1998, 5spd, cherokee, crankshaft position sensor,
jeep, replacement  Current Music: none Where is the camshaft sensor located on a 1998 Jeep Cherokee?On the 4.0 the Camshaft Position Sensor (CMP) is bolted to the top of the oil pump drive shaft assembly. The sensor and drive shaft assembly is located on the right side of the engine near the oil filter. * Disconnect electrical connector at CMP sensor. * Remove 2 sensor mounting bolts.
What are the symptoms of a faulty crankshaft position sensor?Symptoms of a Bad or Failing Crankshaft Position Sensor. Issues Starting the Vehicle.. Intermittent Stalling.. Check Engine Light Comes On.. Uneven Acceleration.. Engine Misfires or Vibrates.. Rough Idle and/or Vibrating Engine.. Reduced Gas Mileage.. |
1998 jeep cherokee crankshaft position sensor location
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