My saturn SL2 died at idle...and now wont crank over...there is juice to the starter and the battery has 13.1 volts

Have you checked the fuel injectors? Fuel filter? Fuel pump? Sounds to me like you have a fuel delivery problem.

Try the following: remove the airbox and spray some starter fluid into the throttle body while someone else cranks the motor. If it starts for a second and dies, then you KNOW you have a fuel delivery problem. If it doesn't change and still won't start, then the problem is either a bad sensor somewhere (crank position sensor, maybe?) or no compression.

Its located in the under hood engine compartment fuse box.

There will be three same relays.One for fuel pump and other for horn and bit bigger one for starter controlling.

For more help regarding starter

CAR STARTER REMOVAL? TESTING

One Wire From Starter Motor Goes To Solenoid And Other Goes To BATTERY. Starter GETS 12 VOLT SUPPLY FROM BATTERY AND WITH THESE VOLTAGE IT TURNS THE MOTOR AND THIS TRIGGERS THE STARTER SOLENOID AND YOUR VEHICLE RUNS.============

For your help there are few relatively help links showing how to remove and install starter with proper instructions:-----

These help links will help.

Click the link below:-----

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

-----------

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

How to replace Starter on Infiniti Q45?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-starter-on-infiniti-q45.html

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2006 GM Montana: How to replace Starter Solenoid?

http://repairhelpcenter.blogspot.in/2012/06/2006-gm-montana-how-to-replace-starter.html

-----

Saturn SL2: How to replace Starter Motor?

http://howtobyme.blogspot.in/2012/06/saturn-sl2-how-to-replace-starter-motor.html

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Saturn SL2 Starter Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/saturn-sl2-starter-wiring-diagram.html

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• Oldsmobile starter solenoid replacement procedure?...

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• How to replace Oldsmobile starter moor?

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• Oldsmobile starter motor testing?

-------------

Oldsmobile STARTER MOTOR NOISE DIAGNOSIS?

------------

These details will help.

Thanks.

CAR STARTER REMOVAL? TESTING

One Wire From Starter Motor Goes To Solenoid And Other Goes To BATTERY. Starter GETS 12 VOLT SUPPLY FROM BATTERY AND WITH THESE VOLTAGE IT TURNS THE MOTOR AND THIS TRIGGERS THE STARTER SOLENOID AND YOUR VEHICLE RUNS.============

For your help there are few relatively help links showing how to remove and install starter with proper instructions:-----

These help links will help.

Click the link below:-----

How to test starter solenoid? http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html -------------------- How to test cars starter? http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html ----------- How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------
How to replace Starter on Infiniti Q45? http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-starter-on-infiniti-q45.html

----------
2006 GM Montana: How to replace Starter Solenoid?

http://repairhelpcenter.blogspot.in/2012/06/2006-gm-montana-how-to-replace-starter.html

-----
Saturn SL2: How to replace Starter Motor?

http://howtobyme.blogspot.in/2012/06/saturn-sl2-how-to-replace-starter-motor.html

--------

Saturn SL2 Starter Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/saturn-sl2-starter-wiring-diagram.html

----------

• Oldsmobile starter solenoid replacement procedure?...

--------------------

• How to replace Oldsmobile starter moor?

----------

• Oldsmobile starter motor testing?

-------------

Oldsmobile STARTER MOTOR NOISE DIAGNOSIS?

------------

These details will help.

Thanks.

One Wire From Starter Motor Goes To Solenoid And Other Goes To BATTERY. Starter GETS 12 VOLT SUPPLY FROM BATTERY AND WITH THESE VOLTAGE IT TURNS THE MOTOR AND THIS TRIGGERS THE STARTER SOLENOID AND YOUR VEHICLE RUNS.============
For your help there are few relatively help links showing how to remove and install starter with proper instructions:-----
These help links will help.
Click the link below:-----

How to test starter solenoid? http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html -------------------- How to test cars starter? http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html----------- How to replace starter in car? http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html
-----------How to replace Starter on Infiniti Q45? http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-starter-on-infiniti-q45.html
---------- 2006 GM Montana: How to replace Starter Solenoid? http://repairhelpcenter.blogspot.in/2012/06/2006-gm-montana-how-to-replace-starter.html
-----Saturn SL2: How to replace Starter Motor?

http://howtobyme.blogspot.in/2012/06/saturn-sl2-how-to-replace-starter-motor.html

--------

Saturn SL2 Starter Wiring Diagram?
http://schematicsdiagram.blogspot.in/2012/06/saturn-sl2-starter-wiring-diagram.html
----------

• Oldsmobile starter solenoid replacement procedure?...

--------------------

• How to replace Oldsmobile starter moor?

----------

• Oldsmobile starter motor testing?

-------------
Oldsmobile STARTER MOTOR NOISE DIAGNOSIS?
------------These details will help.Thanks.

If it is a random problem, you may have to wait until it is a solid failure to find the cause.
Could be the key switch, the neutral safety switch, the starter solenoid, or a cable connection.
A mechanic would check all of these components for voltage when it will not crank.

2000-2002 Saturn SL2
online parts list show the 1.9 DOHC is a timing chain
if so could have skipped a tooth if revved too hard

a V6 a timing belt

see what voltage is at the battery should be about 12.5-do the dash lights die down when trying to crank.try give it a jump start if that fails starter could be screwed

This is a fuel related problem.

Replace the fuel pump.

Most likely a Coolant Temp Sensor & Connector.Under upper radiator hose at cyclinder head.Yellow & Black wires.Hope this helps

look for loosen battery wires, corrosion in them. check ground wire all the way to the engine block make sure its connected right and check ground to the body of your vehicle.