Question about 1989 Jeep Cherokee
A. See web link at bottom of page. Some 1989 and early 1990 vehicles equipped with the 4.0 liter engine and automatic transmission may experience an engine no-start, hard restart, or an engine die-out. This condition may be caused by low signal strength from the Crankshaft Position Sensors (CPS) due to a larger than desired distance to the engine flywheel sensing ring.
What you need to do is check to see if the vehicle has a slotted crank position sensor. If the vehicle is equipped with a slotted crank position sensor, Figure 1, check to see if the CPS grommet on the top of the transmission bell housing has been updated,see Figure 2. If the CPS grommet has not been updated, replace the CPS grommet.
You'll need a Crankshaft Position Sensor, slotted, part number 83100067 and Crankshaft Position Sensors Grommet, dust cover, part number 83100068. When you install it, make certain that the CPS is completely bottomed on the machined lip of the bellhousing and is as close as possible to the flywheel sensing ring without contacting it. go to this web page for diagram: http://autorepair.about.com/cs/faqs/l/bl557h.htm
Posted on Jul 29, 2008
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