Scanner Tool To Set The Timing????

Gearheadmike · Jul 14, 2018

So i know you need a scan tool that reads live data and the cam position and the vortec need to be set at 0*tdc - 2*tdc. Now i hate to take my truck to the dealer to set this i was wondering if anyone knew if anyone sold a scanner that reads the cmp? That isn't going to brake the bank lol prob not any in the $100-$175 range. But figured i'd ask.

mistaake · Jul 14, 2018

dashcommand app for android + $10 gm extended pids within the app can do it. and buy an obd bluetooth thing off amazon. i like my obdlink lx but there are cheaper ones.

if you have an iphone (gross) of course this doesn't work, but if you have an android tablet floating around you can use that too.

https://www.amazon.com/ScanTool-427201-OBDLink-Bluetooth-Professional/dp/B00H9S71LW/

east302 · Jul 14, 2018

Here’s a link that may help...

http://www.gmt400.com/threads/car-gauge-pro-can-read-cmp.35275/

Sent from my iPhone using Tapatalk

bullitt4514 · Jul 16, 2018

I used a USB elmscan3 and scanxl which went with the USB tool.

El Tigre · Jul 16, 2018

I got acceptable results by cutting "windows" in an old distributor cap. After installing,and reconnecting spark wires. Start engine,wedge something into throttle body linkage to idle around 1000rpm. Slowly rotate distributor back,and forth while watching for a short straight spark. Neither leaning advance,or retard. Tighten distributor,and re-install cap,resecure spark wires. No codes for me using this method...

bigshane · Jul 16, 2018

I used a cheapie bluetooth OBDII dongle - ~$10 (link)
Torque Pro app - $5 (link)
and the custom PID below.

Torque - Settings:
Manage extra PIDs/Sensors
Add custom PID

OBD2 Mode and PID: 221301
Long Name: Cam Position Retard Offset
Short name: CMPRET
Minimum value: -100
Maximum value: 100
Scale factor: x1
Unit type: degrees
Equation: ((Signed(A)*256)+B)*0.024
OBD header to use: 6C10F1
Diagnostic start command: <blank>
Diagnostic stop command: <blank>
Overrides PID: Does not override any PID

ramp · Nov 23, 2018

I was able to down load Torque Pro onto my laptop. Can't wait to try and adjust the cam retard angle on 4.3L. The settings went in as designed above. By the way, where did you come up with this setting??

ramp · Nov 25, 2018

Question,
I'm using a usb connected OBD2 device. How does torque pro connect. Protocol method?

Supercharged111 · Nov 25, 2018

ramp said:
I was able to down load Torque Pro onto my laptop. Can't wait to try and adjust the cam retard angle on 4.3L. The settings went in as designed above. By the way, where did you come up with this setting??

You're gonna have to mod the distributor housing to adjust it, and hope the chain isn't stretched so bad you can't get it into spec. The 4.3 used the wimpy LT4 roller chain. Looks like a bike chain.

Michael Kikendall · Nov 25, 2018

I used an el-cheapo ELM327 module from amazon, and dash command for the android. look for the PID in the program for CMP RETARD, and rev the engine above 1000 RPMS's. that will tell you where you're sitting at. Then adjust as needed.. just rev above 1k after every adjustment so the sensor picks up correctly. took me less than ten minutes to adjust mine in.

Scanner Tool To Set The Timing????

Gearheadmike

OBS Enthusiast

mistaake

Real Name: Michael

east302

I'm Awesome

bullitt4514

Newbie

El Tigre

I'm Awesome

bigshane

Newbie

ramp

Newbie

ramp

Newbie

Supercharged111

Truly Awesome

Michael Kikendall

Newbie

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