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Old 08-24-2010, 12:54 PM   #1
aruraeclipse
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2001 SC1
Attention Car turns over but doesn't start

Hello,
My car doesn't start, but turns over, the starter is working good, the only thing it seems is that its not getting fuel. I checked all the fuses and they're good, what should I tackle next?
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Old 08-24-2010, 01:34 PM   #2
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2003 L-Series 3.0L Sedan
Default Re: Car turns over but doesn't start

Try troubleshooting and isolating a fuel issue from an ignition issue.

Find the fuel test valve and remove the plastic cap, cover the valve loosely with a rag while depressing the valve stem, expecting a healthy spray of fuel. A spray means fuel and pressure are available to the injectors. No spray or a dribble means a fuel issue; fuel pump fuse, pump relay, wiring to pump, ground connection from pump.

For ignition, remove the coil wires after noting firing order, and have someone crank the engine while you observe for spark across the coils. No spark at all usually means a failed crank position sensor (CPS) with the ignition module a close second. The cps is above and behind the starter, mounted with one 10mm bolt.
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Old 08-24-2010, 01:50 PM   #3
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We think its a fuel problem as when we checked the pressure no fuel came out and we checked the voltage on the f.pump fuse, and its getting its voltage. So were gonna try gas. Its low but has plenty, but parked on a small decline, back end of car facing slightly down..


Quote:
Originally Posted by fdryer View Post
Try troubleshooting and isolating a fuel issue from an ignition issue.

Find the fuel test valve and remove the plastic cap, cover the valve loosely with a rag while depressing the valve stem, expecting a healthy spray of fuel. A spray means fuel and pressure are available to the injectors. No spray or a dribble means a fuel issue; fuel pump fuse, pump relay, wiring to pump, ground connection from pump.

For ignition, remove the coil wires after noting firing order, and have someone crank the engine while you observe for spark across the coils. No spark at all usually means a failed crank position sensor (CPS) with the ignition module a close second. The cps is above and behind the starter, mounted with one 10mm bolt.
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Old 08-24-2010, 02:07 PM   #4
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Default Re: Car turns over but doesn't start

Ok, use this guide; turn the ignition key to the ON/RUN position and listen for the faint hum/hiss of the fuel pump running for 2-3 seconds then shutting off automatically (for safety). You can cycle the ignition as many times as needed to listen for the pump; you can press an ear to the rear of car or use a screwdriver "stethoscope" to listen for pump noise. No sounds means something wrong with cycling the pump from the pcm. Good sounds means there should be pressure at the test valve.

To power the fuel pump directly; remove the fuel pump relay and carefully wire a jumper between relay socket pins 30 and 87. This sends 12v immediately to the fuel pump regardless of the ignition switch.
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Last edited by fdryer; 08-24-2010 at 02:13 PM.
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Old 08-24-2010, 03:12 PM   #5
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Default Re: Car turns over but doesn't start

we tried connecting relay pins 30 and 87, there was nothing. not even a sound. does this mean my fuel pump is gone? If so, is it located in the gas tank?
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Old 08-24-2010, 05:37 PM   #6
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Default Re: Car turns over but doesn't start

Since you went this far, check both socket pins for 12v. Only one will have 12v (fused and HOT) while the other pin goes to the pump. The ground for the pump is either in the rear seat area or by the ground splice pack in the rear stop light wiring. With 12v verified from one of the two pin outs and jumpered, bang the tank with your hand to see if the pump decides to run. Don't guess about a failed pump until you verify 12v going to and ground connect from the pump. Most failures here will be a corroded ground wire to the pump before a failed pump requires dropping the tank.
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Old 08-24-2010, 06:32 PM   #7
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Quote:
Originally Posted by fdryer View Post
Since you went this far, check both socket pins for 12v. Only one will have 12v (fused and HOT) while the other pin goes to the pump. The ground for the pump is either in the rear seat area or by the ground splice pack in the rear stop light wiring. With 12v verified from one of the two pin outs and jumpered, bang the tank with your hand to see if the pump decides to run. Don't guess about a failed pump until you verify 12v going to and ground connect from the pump. Most failures here will be a corroded ground wire to the pump before a failed pump requires dropping the tank.
Thank yo! Thank you thank you! It was the 3 wire-connector in the trunk on the driverside had corroded and one of the wires broke off I cut the bad off and bypassed the connector and vrooom! She started! Driving home right now. Thanks so much, your a real asset to someone troubleshooting and with the detailed understanding of the saturns

Be well
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Old 08-24-2010, 06:59 PM   #8
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Default Re: Car turns over but doesn't start

The last thing I would do would be dropping the tank so I would try everything before a tank has to come off. And I cannot forget what Canadians did during 9-11-01 when all flights attempting to return to the continental US were commanded to turn away, sending many commercial flights all over Canada. Canadian attitudes welcoming foreign citizens into your homes at a historical moment in time reminds me to attempt some form of compensation. What I do is nothing in comparison. Just being a good neighbor.
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