It is by the throttle plate. there are 2 sensors there one is the tps and has 3 wires and one is the iac and has 4 wires. If you post which motor it has 4.7 litre or the 4.0 litre it will help me help you.
Fig. Fig. Fig. Fig.
Removal & Installation
3.7L
To install:
4.0L
To install:
4.7L
To install:
Click on x's for diagrams.
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SOURCE: IAC Valve Location - 1996 Jeep Grand Cherokee
The idle air control valve is located on the back of the throttle body. It has an oval electrical connector and two torx screws holding it in. Unplug the connector, remove the two screws then lightly tap the body with a soft faced mallet to loosen it from the body.
Once you have it out and prior to installing a new valve clean the seat inside the throttle body where the idle control fits. This must be very clean! Installation is in the reverse order.
To save some cash, pull the valve out and clean it with throttle body cleaner, this usually fixes the problem for quite a while.
Good luck and hope this helps.
SOURCE: 1999 jeep grand cherokee lorado....4.7 L location
The crank shaft position sensor is located on the upper left side of bell housing (i.e the drivers side).It has two wires and held in position by means of two 7/16 bolts. You can remove those bolts to replace it.It is very difficult to get to it without getting a lift.
While re installing a new one make sure the wires does not touch the exhaust manifold and exhaust pipes because the wire can melt down due to heat.
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