Saturn S Series Sedan SL, SL1, and SL2

turning over, but won’t start

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Old 04-04-2007, 04:20 PM
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I am having an issue with getting my car to start. I have a SL2 1996 engine that I blew. I replaced it with a 1998 SL2 engine. I have everything connected. It is turning over but won't start. I replaced wires, plugs, fuel rail and injectors. Everything is connected and the engine block is grounded. Anyone have any ideas? I appreciate the help!
 
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Old 04-04-2007, 04:22 PM
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Do you know if it runs off a different ECU?
 
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Old 04-04-2007, 04:58 PM
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far as I know, it is on the same ECU... I did the research on it, and it is the same
 
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Old 04-04-2007, 06:58 PM
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Then all I can think of is wiring or just a bad connection to a sensor...
 
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Old 04-04-2007, 11:09 PM
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did you check for the basics (fuel and spark?)
 
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Old 04-05-2007, 02:53 PM
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He said that everything was connected so I'll assume he knows something of cars... I was thinking it would be more along the lines of something he can't see...
 
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Old 04-05-2007, 03:02 PM
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Originally Posted by WiShJ1
I am having an issue with getting my car to start. I have a SL2 1996 engine that I blew. I replaced it with a 1998 SL2 engine. I have everything connected. It is turning over but won't start. I replaced wires, plugs, fuel rail and injectors. Everything is connected and the engine block is grounded. Anyone have any ideas? I appreciate the help!

1-As suggested, does fuel spray out from the fuel rail schrader valve (same as the tire valve)? Yes, continue otherwise troubleshoot fuel pump, fuse, and relay problems.


2-Remove the #2 and #4 coil wires, have someone crank the engine while you observe for sparks across the two coils. No, check again to be sure there are no sparks being generated. The lack of sparking would most likely be the fault of the crank position sensor (CPS). Try removing the other two coil wires to check for sparking across the coils. Still no spark would most likely mean a defective CPS. You should check and remove if necesary the coils for corrosion at the bases, sand down the corrosion on exposed metal including the mounting bolts. Lightly sand the coil towers too. Use a little dielectric grease on the plug boots to prevent future corrosion. Use a little regulargrease on the mounting bolts for corrosion prevention too. If you have spark you'll have to re-check all connections again. The CPS is above and behind the starter.
 
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