Question about 2006 Jeep Grand Cherokee

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Starter relay i have put 2 new relays in and it will work for a few days with no problems then it does the same thing it wont start what makes the relay keep going out

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Posted on Sep 29, 2018

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  • Jeep Master
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Have a voltmeter? stop guessing, use the meter. same time and $$$$
starter? but what are the symptoms. ?????? no start sure. but
1: dead starter (not a sound)?
2: solenoid on starter click?
3: dead solenoid?
4: some times starts if i wiggle A/T shift lever? PRNDL bad.?

my guess, is the relay was good. all a long ?
if the old relay was burned to a crisp in inside (did you look) then
the starter can be shorted. they can in fact short.

we use to simple and cheap tools, a voltmeter and ammeter
The key switch energizes the relay.
the relay has a coil. if the coil goes to 12v, (meter across coil)
then the relay is energized. (cranking)
if that works we look at the relay output. (solenoids can short too)
use the volt meter.
if the voltage at battery sags below 10v. the battery is bad. or the starter is shorted.
we use an ammeter to see that short.
100- 200 amps (no engine stated but is covered in the FSM)

here is a voltage plot.
if you watch current it it goes to 500amps and the solenoid just bangs
the starter is shorted.

test 1:
voltmeter to battery neg lug (black meter lead)
meter on 20vdc range (battery with meter there,,reads 12.6vdc.)
red lead to starter solenoid small wire, key line (sT) i call that.
I turn the key to ST position.
the solenoid ST pin (small) goes to what voltage. key held there.?
no wire pulled, this is a live test.
we do that first.

Posted on Dec 18, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: wont start, new battery, relay good, starter good.

Check the Starter Solenoid mounted near the battery.Check it out in the dark...have someone try to start it and see if it sparks at the solenoid.connections may be loose.Also check/wiggle wiring harness to starter.

Posted on Apr 19, 2009

  • 39 Answers

SOURCE: I have a 2002 jeep grand cherokee (2 WD, 4.0L), it

may be a faulty fuel pump

Posted on Jul 06, 2009

  • 1986 Answers

SOURCE: starter keeps turning even when key is turned off

Curious, do you have an autostart installed? I had that happen that the Autostart shorted and just kept telling my starter to continue cranking

Posted on Aug 12, 2009

  • 1 Answer

SOURCE: 07 grand cherokee 3.7 V6 gas engine. Vehicle wont start

I have the same issue. Did you get your problem solved?

Posted on Jan 18, 2010

  • 1 Answer

SOURCE: 2001 Jeep Grand Cherokee Limited wont start.

Your reply really sucks.

Posted on Jan 18, 2010

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READ THIS ALL BEFORE YOU DO ANYTHING
NOTE: some vehicles have the starter relay and starter mounted together as 1 unit. Sometimes the starter relay and starter are seperate. When I refer to "relay" it could also mean the starter and relay as 1 unit.
Note: "starter switch" is not to be confused with "key switch", although sometimes they are all one unit. The starter switch is usually mounted on the steering column and actuated by a metal rod. On units that are all one unit, the keyswitch/starter switch (both one unit) will have to be replaced. (this is a rare problem, so don't get worried just yet)
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2. Check connections on the starter relay, even the small one coming from your starter switch. if loose or corroded, clean with a brush and reconnect them. Try to start your car. Did it start? if not, Move on
3. Well now we know the connections aren't the problem. How about a click? did you hear one? If a click is heard, go to #4, if nothing is heard, go to #5
4. Well at least the relay is clicking, but nothing else is going on. The relay is working, so the starter must be bad. Replace the starter and start your car!
5. Humm, connections aren't the problem, maybe the relay is bad, replace your relay with a new one. Move on
6. Now we have a new relay, with clean and tight connections. Start your car. Does it start? If yes, then HORRAY! we fixed it. Does it click? If so then goto #7, If it don't click, then goto #8
7. So here we have a new relay, with good connections that will click when trying to start the car, but nothing else happens. Starter is faulty, replace the starter, and off you go, see ya!
8. So here we have a new relay, with good connections, but it still won't click when we try to start our car. This means that your starter switch is faulty. Replace starter switch and try to start your car. Vroom! finally done with this car problem!
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5_4_2012_2_49_46_am.jpg

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

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