1.5J assistance for the hunt of fixing timing errors | AEM
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onejzsupra
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Last seen: 1 year 2 months ago
Joined: 09/03/2014 - 22:56
1.5J assistance for the hunt of fixing timing errors

AEM,

I'm trying to track down and fix some timing error issues, I have a non vvti 1.5J with the factory OEM harness and a driftmotion "patch" harness on a 6050 AEM V2.  The car was running fine but was struggling to switch over to idling duty and would cause a timing error.  In an effort to get things resolved so I can get the car tuned I started working on troubleshooting....  Here is what I have done so far:

I have tested both cam sensors and they are good

Tested the crank sensor and its good

Verified timing is correct, I locked timing to 0 and verified with a timing gun that everything is good to go....  Then I switched to 10 degrees and verified timing as well.

I purchased 4 new pins and twisted braided shielded wire to run separate lines away from anything else that can cause interference.  With that I utilized the braided shielding and created an extended ground to ground out only 1 end of the shielded cable. For the cam I have the signal feeding into C29 and the ground feeding into C30.  For the crank I have the signal feeding into C8 and the ground feeding into C9.  I have tested the continuity from the ECU pins to the sensor pins and they are all verified to be good and hooked up prospectively to their correct pins. 

 

Prior to this the engine ran and would idle (It just struggle a mild bit to get to idle) and make power.  At this point it is constantly hunting and surges up and down, I adjusted the VR Cam and VR Crank to see if adjusting those settings effect anything and it didn't seem to make any changes.

Currently I have a 12 tooth crank timing gear, all settings other than that are the same in terms of the idle tab and the timing tab

Additionally, I tried the front cam sensor and it won't start based off of that.  I have the timing sync set at 17.633 and it doesn't allow the injectors to fire, I have also tried 5.633.  If I take that same wire and attach it to the rear sensor with those exact same values, it will start and surge.  From my understanding the rear sensor timing sync is supposed to be around 5.633 or 12 tooth less.  When I switch the 5.633 on the rear sensor it will not start.  I don't think this is hardware related....  I think that being that I changed these two cables out to a proper setup that something needs to be adjusted.

 

What can I do?

onejzsupra
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Last seen: 1 year 2 months ago
Joined: 09/03/2014 - 22:56
Not that it matters.... but

Not that it matters.... but after 2 weeks I got it solved lol.

Christopher Rhoads

AEM_HB
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Last seen: 1 week 2 days ago
Joined: 11/07/2016 - 09:22
[quote=onejzsupra]

[quote=onejzsupra]

Not that it matters.... but after 2 weeks I got it solved lol.

[/quote]

Feel free to share your findings so others who have the same problem could also solve this one.

AEM_HB
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Last seen: 1 week 2 days ago
Joined: 11/07/2016 - 09:22
[quote=onejzsupra]

[quote=onejzsupra]

Not that it matters.... but after 2 weeks I got it solved lol.

[/quote]

Feel free to share your findings so others who have the same problem could also solve this one.