Question about Saturn SC2

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99 Saturn SC2 will not crank

Sometimes when I try to start my car... nothing, it does not even crank. If I wait and try in 20-30 minutes, it starts fine. The lights, door locks and windows work fine thou.

I was told to replace the Crankshaft Sensor, I did but the problem remains.

Somebody else suggested to replace the Ignition Module but, because of the price [$150] I want to be sure that's the problem.

Any ideas? Thanks in advance.

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  • 2 more comments 
  • robbyyankee May 30, 2008

    Thank You for your fast, in-depth answer. I will soon replace the starter, and will post the results.



    Thank You, again.

  • mbowman7 Nov 10, 2008

    I also have a 99 Saturn SC2. A few times in the past when I would try to stat it the car would not even try to turn over. But everything else running on the battery is working fine (radio light etc.) Usually after a little while ( a few hours at the most) I would try again and it would start fine. This time however I was trying to leave work and it would not start. I waited however now after 3 days I still can't get it started. From everything I have been reading Saturns have a problem with their ignition switches so I guess I will try to replace that first.

  • Anonymous Jan 03, 2009

    My 1999 Saturn SL2 will not start. I replaced the spark plugs, and the car still will not start. What can I do to resolve the problem.

  • nancyee24 Jan 22, 2009

    OMG..I have the same prob....only 32k on my '99..cranks but no start??...1st time...replaced the plugs but don't think that the real prob...happened again but started after sitting for 2 days???..just don't trust it to drive any more...Help

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  • 6,966 Answers

Hi,

If I understand you right, the problem is at certain times the engine will not crank, that is turn over when you turn they ignition key to START. And at times it will start and run normally. Offhand, I would discount the possibility of the Ignition Module. To my knowledge it has nothing to do with cranking the engine but rather providing the spark at the plugs through the coil.

Having said that, might it be that the issue is with the starter system. The starter system is initiated at the ignition switch when the key is turned to start. At this point, the ignition switch then provides +12VDC to a starter relay. The relay is but a remote switch with slightly higher amperage capacity. The starter relay then engages and supplies +12VDC to the staring solenoid. The starting solenoid then performs two (2) functions. It provides the switching action (hundreds amps) from the battery heavy cable to the actual starter motor. The solenoid likewise pushes a small pinion gear along the shaft of the starter motor to engage the ring gear. The ring gear is of course on the edge of the flywheel which in turn is attached to the crankshaft.

Starter system problems could be corrected by:
1. check battery, battery cables and connections;
2. charge the battery if required;
3. clean brushes and guides of brush holders of the starter motor;
4. clean the commutator and commutator segments;
5. check/replace the armature or field coils if determined to be defective;
6. in some extreme cases it could be the drive pinion or the flywheel gear ring is defective.
7. often it is the big switch that the solenoid activates that looses contacts causing no +12V internally to the motor.
8. Most likely would be a defective starter relay or the IGN switch itself. Relative to this, you might try and check the connectors/terminals and electrical joints.

In the picture below, the upper portion is the starter solenoid while the one below it is the actual starter.
99 Saturn SC2 will not crank - c9b6a69.jpg
Given the amount of work to overhaul a starter, you might consider just replacing it. This page might be informative.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on May 30, 2008

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