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Old 11-10-2017, 08:23 AM   #21
waiter21
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2003 VUE 2.2L
Default Re: dies, no crank, no start

Do a compression test.. This almost sounds like timing chain...

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2003 Vue - 2.2L with Manual Trans. (Swapped)
Originally had 2.2L and Auto trans.

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Old 11-11-2017, 04:43 PM   #22
cdes
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Default Re: dies, no crank, no start

I checked the fuel pressure, it's 52 psi with ignition on. Took me a long time to hunt down a working loaner tool.

I will probably not mess around with compression and the alikes, just not worth it. Thank you all for your valuable help!

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'06 Saturn Vue 2.2L 5-spd Manual

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Old 11-11-2017, 04:55 PM   #23
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Default Re: dies, no crank, no start

Crankshaft position sensor?

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Old 11-11-2017, 07:12 PM   #24
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Default Re: dies, no crank, no start

Quote:
Originally Posted by atikovi View Post
Crankshaft position sensor?
Will this cause a no start? This board is a little unclear about it.

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Old 11-11-2017, 07:59 PM   #25
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Default Re: dies, no crank, no start

If the engine computer doesn't know where the crank is, I guess it could. They are just $10. Not sure how easy to change.

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Old 11-12-2017, 08:15 AM   #26
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2003 VUE 2.2L
Default Re: dies, no crank, no start

From reading your symptoms and tests to date, Sounds like you have good fuel and spark.

If your timing chain slipped one or two teeth, your compression will be real low and it will not start, may backfire, etc.

If you're lucky, it only jumped a couple teeth and didn't damage the valves. Once again, a compression test will show this. If valves are bent, compression will be almost zero.

Remove all the park plugs, get a compression tester, either the kind that screws into the spark plug, or the kind you hold against the spark plug hole..

Should be up around 150 or above (170-180)

...
2003 Vue - 2.2L with Manual Trans. (Swapped)
Originally had 2.2L and Auto trans.

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Old 11-12-2017, 11:21 AM   #27
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2003 L-Series 3.0L Sedan
Default Re: dies, no crank, no start

Quote:
Originally Posted by cdes View Post
Will this cause a no start? This board is a little unclear about it.
Three indications of the crank sensor operating; post#8 -fuel on spark plugs, post#10 - showing spark and being shocked, and post#12 - the engine started up. When the engine turns over, the crank sensor generates precise timing signals, geeks describe these timing signals as pulse trains - varying digital pulses in a stream sent to the pcm/ecm. Without it the ECM cannot operate the EFI system to; turn on fuel pump, initiate ignition for spark and pulse injectors. No crank sensor = no fuel pump, no spark and no injector operation - a dead ecm that becomes a door stop. You saw and smelled fuel on plugs - injectors cannot operate unless the ECM pulses them and the ECM cannot operate unless the crank sensor is outputting timing signals when the engine turns over. The fuel pump runs for two seconds at ignition on time then shuts off if the engine isn't started. When cranking the engine, the crank sensor turns on the ECM with the engine commanding fuel pump operation to continue pressurizing fuel lines. Spark cannot be generated unless the engine turns over with crank sensor signals to the ECM and the ECM providing a different timing signal to the coils to generate spark pulses.

Having said all that to describe a working crank sensor, the possibility of an intermittent sensor is sometimes difficult to diagnose since an intermittent sensor implies it works one moment then not the next moment. Seeing spark and smelling fuel on plugs generally means the sensor is working however, when it doesn't, spark and fuel aren't present. My L300 exhibited all the symptoms of an intermittent crank sensor fault based on members sharing info and was a $90 replacement. The same day it was diagnosed and replaced a few hours later, I drove my car home. The sensor was faulty and replacing it allowed me car to run again a few hours later. That was several years ago. While your situation is slightly different, it's your choice to replace your crank sensor if it's less costly or continue troubleshooting towards possible loss of compression issues.

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