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david craig
david craig,
Category: Saturn
Satisfied Customers: 1927
Experience:  owner/mechanic at 3D Automotive
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My 2003 saturn 300 ls will crank but will not start and my

Customer Question

my 2003 saturn 300 ls will crank but will not start and my car i think might have a anti theft system as well
JA: Have you checked the fuel supply? And are all the spark plugs working?
Customer: i believe the plugs are well but i will check fuel supply
JA: What is the model of your '03 Saturn?
Customer: 300 ls
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: just happened last night
JA: Anything else you think the mechanic should know?
Customer: no not really thats all i can see
Submitted: 7 months ago.
Category: Saturn
Expert:  david craig replied 7 months ago.

Hi Im David. when you try to start the vehicle, does the security light go off or stay on?

Customer: replied 7 months ago.
it stays off
Expert:  david craig replied 7 months ago.

ok, so its not a security/theft issue.

Expert:  david craig replied 7 months ago.

has the vehicle been actin up at all lately? taking longer to start? running rough?

Customer: replied 7 months ago.
ok but the car will run like about 2 or three weeks and then it wont start wait about 20 min and it starts its crazy
Expert:  david craig replied 7 months ago.

ok, lets try this. make sure the battery cable terminals and posts are corrosion free and tight. make sure the negative cable from the battery to where it attaches the the engine block is corrosion free and tight.

Expert:  david craig replied 7 months ago.

when it is running, do you have a check engine light on?

Customer: replied 7 months ago.
ok i can do that
Customer: replied 7 months ago.
no
Expert:  david craig replied 7 months ago.

please do, then let me know what you find. and since there is no check engine light on, that helps narrow it down.

Customer: replied 7 months ago.
i stand corrected the check engine light does stay on sorry more than one car
Expert:  david craig replied 7 months ago.

ok. do you have a code reader?

Customer: replied 7 months ago.
no i do not unfortunately
Expert:  david craig replied 7 months ago.

ok, well do the cleaning and tightening of the battery,alternator and starter cables, and engine ground, then let me know what you have found...........

Customer: replied 7 months ago.
ok thanks
Expert:  david craig replied 7 months ago.

any kind of corrosion and looseness on those will definitely cause intermittent and sometimes continuous problems.......

Expert:  david craig replied 7 months ago.

any progress?

Expert:  sprinkles08 replied 7 months ago.

Hello and welcome to Justanswer!

If the engine cranks but doesn't start then it's not going to be a security related issue. You could be missing spark for a number of reasons, or you could be missing fuel due to a bad pump or loss of power or ground to it. Fuel contamination or an exhaust restriction are also possibilities but not as likely.

Does the fuel pump run when the key is first turned on?

Expert:  david craig replied 7 months ago.

do you still require assistance?