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replaced cam sensor car wont start

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Old Sep 20, 2009 | 08:23 AM
  #21  
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hm....does all the lights on the dash come up when cranking? vdc, slip, abs, brake and all that?
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Old Sep 20, 2009 | 10:14 AM
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Originally Posted by Overdrive/Jtran
hm....does all the lights on the dash come up when cranking? vdc, slip, abs, brake and all that?
yes all lights come on and looks normal i believe they turn on and then while cranking turn off.... nothing looks out of ordinary when turnin on
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Old Sep 20, 2009 | 10:19 AM
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also ive heard of having to go to the dealer to reset the immobilizer .... i dunno ive been researching everywhere online i cant find a solution or cant think of any place to take it to to get a professional opinion or at least inspected .....aaaaaahhhhhhh!!!!!

i guess the dealer so they can bone me up the A#$
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Old Sep 20, 2009 | 06:17 PM
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Originally Posted by bldg250z
also ive heard of having to go to the dealer to reset the immobilizer .... i dunno ive been researching everywhere online i cant find a solution or cant think of any place to take it to to get a professional opinion or at least inspected .....aaaaaahhhhhhh!!!!!

i guess the dealer so they can bone me up the A#$


Yes they will
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Old Sep 20, 2009 | 09:10 PM
  #25  
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man, sounds like a cluster poop. lmk if you wanna just tow it up here and let us figure it out and get it broke in and tuned.
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Old Sep 21, 2009 | 04:33 AM
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^^^that sounds like a better idea if i dont resolve it by this week i'll see you next week Jtran good thing i had already made plans on hauling it in by trailer!
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Old Sep 21, 2009 | 04:39 AM
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It would be interesting to see what happens if you try to start the car with an unprogrammed key. Your "spark once" observation has me thinking it's the factory immobilizer. However, if it is the factory security system there should be an anti theft light on the dash letting you know there is a security concern. If you get an unprogrammed blank cut to the ignition key I wonder if the car still sparks once when cranking?

It would really be beneficial if you could monitor the outputs of the cam and crank sensors to make sure the signals are getting to the ECU as well. The easiest way to do that is with an o'scope, but since most people don't have access to a scope that might not work for you.
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Old Aug 6, 2010 | 01:04 AM
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Wondering what the issue was with the car, I'm experiencing the same thing.
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Old Aug 6, 2010 | 01:17 AM
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You mentioned the code for the Crank Sensor... Is it plugged in securely? If not, it could cause the engine to crank but not turn over.
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Old Aug 6, 2010 | 09:13 AM
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well guys to finalize what my problem was ..... for a while i was able to drive my car but to do so had to unplug my cam sensor .... which now thinking about it was stupid of me..... after i took my car to jtran in houston he found out that my timimg was off on bank 2 which was the sensor that i would need to disconnect ...... luckily nothing got dameged and now the car runs fine .......

if you recently did any timing work on the car start with that if not , then its usually best to replace all three sensors

2 cam sensors
1 crank sensor
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Old Aug 6, 2010 | 05:12 PM
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So the car starts w/o the sensors hooked up?

Originally Posted by bldg250z
well guys to finalize what my problem was ..... for a while i was able to drive my car but to do so had to unplug my cam sensor .... which now thinking about it was stupid of me..... after i took my car to jtran in houston he found out that my timimg was off on bank 2 which was the sensor that i would need to disconnect ...... luckily nothing got dameged and now the car runs fine .......

if you recently did any timing work on the car start with that if not , then its usually best to replace all three sensors

2 cam sensors
1 crank sensor
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Old Aug 6, 2010 | 07:41 PM
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same issue here, no mods, fails to start no matter what
I will get back to it in a couple weeks
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Old Aug 7, 2010 | 12:46 PM
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The car did start without the sensor plugged in but there's a reason why it won't start .... I got lucky that my timing wasn't off to were on first crank all hell broke loose!!! Just my advice on that.


In my case I had driver side cam sensor hooked up and crank sensor hooked up, the only one that was not was the passenger side ..... Along the way there were many things that could cause this ... With me my timing was off since I had just built the motor.... If your having similar issues start with... Checking if there's a spark / check your fuel pump / make sure ur ECM is working .... And go from there... Is your car throwing any codes?

Last edited by bldg250z; Aug 7, 2010 at 12:51 PM.
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Old Aug 7, 2010 | 01:54 PM
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My car was throwing the codes for the sensors prior but now no codes just a crazy sound on start up, here's a low quality cel vid. Is the starter toast?


http://www.g35turbo.com/video-2010-0...12-02start.3gp
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Old Aug 7, 2010 | 01:57 PM
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In my case at home I did a quick flashing light check but also a ecu reset.
I will follow up when I get back.
I will purchase a programmer and test the bcm.
I have a complete parts car destined for motor swap.
I found my code reader afterwards but left for the Caribbean for a few weeks.
The Z here throws 340 [345??] codes and would start but randomly shuts off completely on the run.
There was clutch work done recently and the car is driven by someone else.
Manufactured in 2002 with 50k miles now.
If the battery is disconnected for a few minutes it runs for a couple days fine.
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Old Aug 7, 2010 | 02:09 PM
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Originally Posted by G35cTT
My car was throwing the codes for the sensors prior but now no codes just a crazy sound on start up, here's a low quality cel vid. Is the starter toast?


http://www.g35turbo.com/video-2010-0...12-02start.3gp
Strange that was the same sound I initially heard before connecting a jumper.
It started turning over normally but now would not fire.
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Old Aug 7, 2010 | 04:41 PM
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it could possibly be the starter ..... ive never had an issue with one, so dont take my word ..... but u have to start somewhere
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Old Aug 11, 2010 | 10:27 AM
  #38  
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Battery checks out find I will be pulling the starter this week some time see if any damage to starter/flywheel.
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Old Aug 11, 2010 | 11:43 AM
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yup ive heard that sometimes the teeth on the flywheel break but GL with that!! hope u find the problem!
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Old Aug 11, 2010 | 01:22 PM
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Right I pray it's just the starter and not damaged flywheel. Really don't want to spend more money on this thing. Just guessing but I was previously running a small Odessey 680 battery that I would have to charge often so maybe it really strained the starter finally making it quit.
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