Diagnosing P0300 code & Camshaft Retard Offset Adjustment Using Torque App

[Richamos1]

if it is flashing that is an active misfire and could be caused by i number of issues. when that happens some data is unreliable. could be random sensor failures or cable leakage and so forth.

With 201k on my limited i think I will pull the distributor and see what that looks like.

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[eswarden]

I put in the formula exactly like the pictures show, but still cannot get a reading on the torque app

 

[TahoeInFC]

Hi All, I know this thread is a little over a year old, but I was curious enough to try this CMP retard calculation in my copy of TorquePro. I get a value for CMP, but it's -4.5 degrees nominal, and varies from about -4.4 to -4.7 during driving. While it's a number in the right order of magnitude, I was under the impression that 0 +/- 2 degrees was enough to trigger a P1345 code on my 99 Tahoe 5.7. I'm not getting any codes, so I question the accuracy of the reading. I checked and double-checked that I entered the equation and hex properly. It all looks right.
Anyone else try this successfully?

 

[largewon62]

Hi All, I know this thread is a little over a year old, but I was curious enough to try this CMP retard calculation in my copy of TorquePro. I get a value for CMP, but it's -4.5 degrees nominal, and varies from about -4.4 to -4.7 during driving. While it's a number in the right order of magnitude, I was under the impression that 0 +/- 2 degrees was enough to trigger a P1345 code on my 99 Tahoe 5.7. I'm not getting any codes, so I question the accuracy of the reading. I checked and double-checked that I entered the equation and hex properly. It all looks right.
Anyone else try this successfully?

It could be the distributor gear being worn that causes that. The Vortec engines are known for eating distributor gears.

 

[TahoeInFC]

Thanks for the response!

I suspect that you're right, given my tahoe has a little over 150k on the counter. I think it's still the original distributor, so is probably somewhat worn. But still curious as to why a fault code isn't being thrown, giving me a CEL. With this much CMP retard offset, it seems like the vehicle would be complaining by now, right?

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[Jerry Blueburban]

New to this page. I am using a BAFX Products Bluetooth Diagnostic OBDII Reader / Scanner for Android Devices with Torque pro. I need to adjust my cam retard and set up a custom PID to match the one at the top of this page and I get no response back. Can someone please tell me what I am doing wrong or what I need to do to get this to function properly. Thank you.

 

[TahoeInFC]

New to this page. I am using a BAFX Products Bluetooth Diagnostic OBDII Reader / Scanner for Android Devices with Torque pro. I need to adjust my cam retard and set up a custom PID to match the one at the top of this page and I get no response back. Can someone please tell me what I am doing wrong or what I need to do to get this to function properly. Thank you.

Jerry, I am also using Torque Pro, and with the screenshots in the Posts #1 and 2, it just started working after I added the new PID and the new 'Realtime Information' gauge that points at the new PID.
Admittedly, the first time it wouldn't work for me, because I had messed up one of the hex codes in the screenshot, but after I found and fixed it, it started to work. I mis-typed the first number (221301) and got complete garbage until I fixed it. I'm using a WiFi OBDII adapter instead of bluetooth, but that shouldn't make any difference...as long as it's communicating with your truck. I'm guessing you've verified all the hex codes and formula in the screenshots? Are you getting good communication with your car using the app and the adapter? You'll know this when the adapter and 'car' icons in the top left-hand corner of the torque pro screen stop blinking, and when the big gauge in the main screen of the torque app starts displaying your vehicle's tach instead of something like 'Accel' (which is only monitoring the accelerometer in your phone or tablet until your car connects).

You've probably already tried all this, but hope it helps!

 

[Get Bent]

If you change the multiplier from 0.024 to 0.063, the readings returned will be more accurate the further from 0 degrees you get.

Using the formula with the multiplier 0.024 I was getting a reading of 0.6 degrees. I bought the Dash Command app with the Cam retard PID and it returned a value of 1.6 degrees. I was a full degree off and almost out of spec. I then modified the multiplier to 0.063 and the returned values were identical between the two apps. I readjusted my distributor and now have full confidence everything is set correctly.

 

[Mista Jey]

I double checked I put it in right, but still not showing active or any reading. I've got a 96 GMC K2500 with the 7.4L. any help would be great.

 

[C17FXR]

If you change the multiplier from 0.024 to 0.063, the readings returned will be more accurate the further from 0 degrees you get.

Using the formula with the multiplier 0.024 I was getting a reading of 0.6 degrees. I bought the Dash Command app with the Cam retard PID and it returned a value of 1.6 degrees. I was a full degree off and almost out of spec. I then modified the multiplier to 0.063 and the returned values were identical between the two apps. I readjusted my distributor and now have full confidence everything is set correctly.

I had to change the worm gear on the bottom of my distributor so I thought I'd give this a try.
I'm using a PLX Kimi 4 bluetooth adapter and Torque Pro version 1.10.114.
I was getting the P1345 at start up even after resting the code, adjusted my distributor until I got the numbers in the screen shot, funny thing the P1345 code has not returned but the numbers are not correct.
Guess I'll be getting the Palmer Performace just to make sure I get it set correctly.

As you can see I set a screen for both multipliers and you can see the results. The top screen was the 0.024 multiplier and the one on bottom was the 0.063 multiplier.