P1721 code on my 2001 jeep grand cherokee - 2001 Jeep Grand Cherokee

Marvin

• 85242 Answers
• Posted on Mar 02, 2009

SOURCE: Turn signals not working on 2001 Jeep Grand Cherokee

replace the turns signals flasher unit.

SOURCE: window motor replace 2001 jeep grand cherokee

You need to remove all the skrews from the door. Normaly there is one in the handle of the door, one behind the in door lach handel and one under the bump out for the arm rest on the door. Than you need to take a flat head skrew driver slowly priying the panel off. There are plastic clips on the backside of the panel it is ok if you brake a few.

SOURCE: Changing spark plug wires on 2001 Jeep Grand cherokee

yah direct ignition coil pack does away for the need a a distributer cap and rotor.much higher energy ignition system where the computer tell when to fire.if that helps.not hard to change.as long as you change them one at a time so you don't screw up the order.

SOURCE: 2001 Jeep grand cherokee motor knock 4.7 motor

First, if the noise is from the upper part of the engine and is more of a tapping than a knock, likely you have a problem in the valvetrain, most often a bad lifter or worn rocker arm. If the noise is low, deep inside, the noise is from a bearing. This is generally accompanied by lower than normal oil pressure. Regardless of the underlying cause, correcting the cause will not stop the knock. To do that correctly, the engine needs to be removed and all crankshaft bearings and the crankshaft itself need to be replaced (crank can sometimes be "undercut" and thicker bearing shells can be used depending upon the amount of wear.) If caught very early, sometimes only one bearing can be replaced in-car, but in 99% of all cases I have ever seen, most will fail again, sometimes more severely if done this way.

Testimonial: "Thanks"

SOURCE: 2001 Jeep Grand Cherokee won't shift out of first

P0733=Gear 3 Incorrect Ratio
P0734=Gear 4 Incorrect Ratio,
your transmission is in "limp" mode,
Have the following sensors checked on the transmission,input sensor,output sensor,and speed sensor.
The transmission is not getting a signal from one of them,So it doesn't know how fast your going so it doesn't up shift.