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I changed the starter the other day, first mistake I made was disconnecting the positive side of the battery. Anyway I changed out the starter, reconnected everything and had a problem right away when I started the vehicle. Whenever I start the engine now I idle gets very low and the motor almost stalls or when I stop the same thing happens. I had checked to make sure that the battery cables are clean and tight, also tried a fresh tank of gas from a different station. I sort of think that the computer some how needs to be reset properly.
after disconnecting the battery and reconnecting the motor started up fine as before, however when I rev the motor the idle drops way down but will return to a steady idle, I fear that the same problem still exists. Any other ideas? Thanks chryslerguy.after disconnecting the battery and reconnecting the motor started up fine as before, however when I rev the motor the idle drops way down but will return to a steady idle, I fear that the same problem still exists. Any other ideas? Thanks chryslerguy.
There was a problem with the idle control motor way back when. Look on the back of the throttle body and you will see a cylinder shaped motor. If the housing is a metalic silver color, replace it. The newer design has a black plastic housing. Being sixteen years old it may have already been replaced but it may need to be removed and cleaned along with the throttle body blade. I hope this helps.There was a problem with the idle control motor way back when. Look on the back of the throttle body and you will see a cylinder shaped motor. If the housing is a metalic silver color, replace it. The newer design has a black plastic housing. Being sixteen years old it may have already been replaced but it may need to be removed and cleaned along with the throttle body blade. I hope this helps.
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Disconnecting your battery, as you must've done when changing the starter, will cause the ecu to revert to factory settings and the computer will have to relearn the proper idle for your jeep.
Park your Jeep Grand Cherokee on
a level surface, activate the emergency brake and place blocks behind
the back tires for safety. Disconnect the negative battery cable with a
terminal puller and isolate it. Raise the front end of the car with a jack for easier access to the starter.
Check for a support bracket if
your Jeep Grand Cherokee has four wheel drive (also in some
transmissions). You will find the support bracket between the front axle
and side of the transmission. Remove the two support bracket bolts at
the transmission and pry the support bracket away slightly to obtain
access to the starter bolts. Place the bolts you remove in the jar for
safe keeping until later.
Support the weight of the
starter and unfasten the starter mounting bolts. Place the bolts in the
jar. Move the starter toward the front of the vehicle. The nose of the starter pinion housing should clear the housing.
Point the nose of the starter
downward and lower the starter enough to remove the nut that fastens the
battery positive cable wire harness connector eyelet to the solenoid
battery terminal stud.
Remove and disconnect the
positive battery cable from the solenoid terminal stud/connector
receptacle. Remove the starter motor from the engine of your Jeep Grand
Cherokee.
Take your malfunctioning starter
to the parts store with you. Aftermarket distributors re-manufacture
most of the starters they sell, so you can likely obtain a partial
credit toward your new starter by exchanging your old one. Be sure that
you take care not to damage the starter in transit, because the better
condition it is in, the more you can get for it.
Purchase a replacement starter
that has the same or higher cranking capacity (power rating) as the
original starter. Also, match the bolt patterns, drive gears and
electrical connections. Your owner's manual may list specifications or
the auto parts technician will help you determine them. Download an
owner's manual on the My Jeep website.
Installation of the New Starter
Snap the solenoid wire to the starter motor. Remember to support the weight of the starter at all times.
Reconnect the positive battery cable to the solenoid stud and tighten the battery cable eyelet nut.
Position the starter next to the
transmission. If your Jeep Grand Cherokee has an automatic
transmission, put the cooler tube bracket in position. Install and
tighten the starter mounting bolts. Replace transmission support
bracket.
Lower your Jeep Grand Cherokee
back to the ground. Reconnect the negative battery cable. Turn the key
in the ignition to see if your new starter motor functions correctly.
usually rough Idle is not noticable at high ildle. Once it is idles normally try Disconnecting one injector at a time. If the idle stays the same than that cylinder is the culprit. Remove that spark. If it is wet than do a compression test. Should read better than 100lbs of compression.If compression is good take a spark plug and hook it into the end of the plug wire.Lay it across the intake,start the car and watch for spark. If you have spark than you probably have a bad injector. A miss will cause the vehicle to idle high. The computer is trying to keep the car from dieing out. Hope this helps. No spark do a tune up.
Living in New England we have some cold days. What I find helps, but not necessary your problem, is to turn the key to the "on" position for 5 seconds or so and then turn the key to actually start the engine. Its starts right up without major pull on starter or battery.
The starter is on the right side of the engine, at the same place the transmission is located. Remove the neg. battery cable first, on 4WD models remove the front axle skid plate ( if equipped with), then disconnect the wires from the starter, disconnect any clips that hold the wiring in position, remove the mounting bolts from transmission side. It may be easier to disconnect the wiring after the starter is removed from the engine. Make sure to keep the starter supported and do not allow to hang by the wiring.
disconnect the battery, negative side first.
remove both positive wires from the starter.
remove the bolts from the starter.
install new starter.
make sure positive starter wires are free of corrosion and rust, use sand paper or a file.
tighten positive wires just snug, then another 1/4 turn, ** not too tight or you will snap the stud off the starter solenoid**.
coat wire ends and starter studs with die-electric grease, battery protector, spray paint , or something non metalic.
connect vehice battery, negative side last.
check all fuses in power distribution center near battery and make sure all wires you removed from starter went back on starter and not hanging somewhere. There is a possibility that before you changed the starter there was something wrong that was causing the starter not to operate. Also check that power is going to and out of the ignition switch and starter relay (relay also powers up the ignition system which is why you have no fire)
after disconnecting the battery and reconnecting the motor started up fine as before, however when I rev the motor the idle drops way down but will return to a steady idle, I fear that the same problem still exists. Any other ideas? Thanks chryslerguy.
thank you much!!!
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