Hi guys.
I am working on a L92 with manual transmission that I switched the VVT camshaft for a more agressive one.
To do it, I change the cam gear for a non vvti cam with his shorter cam cover. Keep same sensor.
Also tune the ecu with a Nelson Perf´s tune.
Engine does not start and does not give any DTC. (before switch the front cover and right gear, it shows cam's sensor DTC) But if I unplug the cam sensor it neither shows a DTC.
Any idea???
This are the files and screen shots.
grounds are ok, no DTCs, etc. Any idea????????????
Have you done a security relearn??? I had this issue with a Nelson tune...should fire up after this
http://www.nelsonperformance.com/security-relearn
Whar a security relearn is?Originally Posted by Guero68
Thanks in advance!
I am not sure exactly what's all goes on...but it deals with your key and computer part of VATS vehicle anti theft system...just follow the Nelson link I gave you and it should start
Well, my engine is on a stand right now, not on a car
You need to change to the white cam sensor if you deleted the VVT. Did you delete the VATS and starter diag checks?
69 Suburban Bagged & Blown: http://67-72chevytrucks.com/vboard/s...d.php?t=200387
68 Farm Truck build thread-LS3/6L80/TVS1900: http://67-72chevytrucks.com/vboard/s...d.php?t=358692
The engine comes with the light brown sensor (12591720) and tbe vats is off.
If I chech that part number shows me that came on LS engines.
So, the vvt sensor that remain there looks the same as ls3 non vvt camshaft
image.jpg
Last edited by Gonzalo Bravo; 11-17-2014 at 01:57 PM.
Did you delete VVT from the tune? Is your engine harness wired correctly for Non-VVT?
Nelson Performance tune the ecu for their own cam kit. But what you say about the harness for non vvt? The only that I did was left the vvt actuator switch un connected. Is there any special mod in the harness when delete the vvt?
Is there any modification on the wiring harness to use without the VVT?
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