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Cranks but will not start

Tiny
RREAMS
  • MEMBER
  • 2003 SATURN VUE
  • 4 CYL
  • 2WD
  • MANUAL
  • 94,300 MILES
Pulled engine to get to slave cylinder that needed to be replaced. Prior to pulling the engine husband marked all wires to make sure of proper placement when putting the engine back in. Replaced slave cylinder, belt, spark plugs, spark plug boots, changed oil in transmission and engine. Put engine back in hooked it all back up everything works but it won't start. Cranks but won't start. No power to the spark plug coil. Tested wires and computer on spark plug coil, 12v, they both work. Spark plug coil replaced still cranks but will not start. Replaced crankshaft sensor still cranks but will not start. Did passlock relearn did not work. Fuel is getting to where it needs to. Please help!
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Monday, August 15th, 2011 AT 12:28 AM

11 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would look at all the grounds. make sure they are hooked up and secured. you said you did the pass lock re learn. was that unsuccessful or you did it and succeeded but still wont start.

Roy

Here a guide to help you figure it out

https://www.2carpros.com/articles/car-cranks-but-wont-start
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
Everything is good on both responses. Transmission is connected to the engine, engine sits sideways it's a front wheel drive. Transmission is connected to the drive shaft which is why the whole unit had to be removed. No codes, all fuses checked and okay. All wiring double checked nothing pinched. All grounds are okay. All bolts are tight. The security light is not on.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
Per my husband, we do have power to the coil pack, but the coil pack is not sending sparks. He replaced the coil pack. Something else is preventing the coil pack from sending the sparks because the new one isn't working either. But there is power to the coil pack. Can't figure out what it is. We do not know what the fuel pressure is, he says it has fuel going to the engine. Yes all the bolts are tight. Just so you know my husband is a heavy equipment mechanic so he has experience with this type of work. But alas my poor car is not heavy equipment and there is a difference as you know. Just threw that out for informational purposes to let you know he is not a beginner at this. Thanks so much for your continued help.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So there is power to the pink wire to the coil?You think you have the correct fuel pressure but arent sure?You think the injectors all have injector pluse and is squirting fuel in the cylinders?
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
Yes there is power to all the wires including the pink one. Per my husband he says yes there is fuel to the injectors, no he has not taken the fuel system apart to see if they are squirting.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
I will also say when we crank it I can smell fuel strongly, don't know if that helps in any way.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
I was just asking if the there was a injector pluse you would just plug in what is called a noid light where the injectors would crank the engine over and watch for a flash. Sounds like your getting fuel dont know how much. Lets go after the no spark I posted the trouble tree so he can check that out just skip thru the tech2 scan part and make the most of it. Let me know what you find.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
We will do this tomorrow and I will get back with you. Will you be available?
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
RREAMS
  • MEMBER
  • 7 POSTS
Thanks for the help. It was the crankshaft sensor
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Good to hear, please use 2CarPros anytime we are here to help.
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Tuesday, February 9th, 2021 AT 8:39 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
The crank position sensor is located on lower back part of the engine, by the starter. You will have to remove the starter to access the crank sensor.
See below for the diagrams and replacement procedure.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Thank you.
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Tuesday, August 31st, 2021 AT 7:37 AM

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