5.7l Vortec Distributor Timing

[YukonGTmaster]

I just installed a new Bravex Distributor in my 97 Yukon GT 5.7l Vortec after doing the MPFI upgrade. I fiddled around long enough so the distributor body sat somewhat parallel to the intake, and there was no more P1345 code. I got an OBDLink MX Bluetooth scanner with Dash Command App installed. At 1000 rpm it doesn’t matter which way I turn the distributor, the cam retard offset hovers around +24 degrees. What is happening?

 

[YukonGTmaster]

Looks like Dash Command is strictly monitoring Timing. I don’t see Cam Retard Offset. I’m using an iPhone.

 

[drakon543]

2000 rpms would show 0 not 1000 if im not mistaken. also if you dont see p1345 your atleast within +/- 2°. also i think i recall some scanners read what it thinks the timing is and its actually reading the wrong thing. most scanners that properly read it specify it as cam retard and have a separate reading for timing. so if your still have issues there is a different problem.

 

[exp500]

Not familiar with that app, sometimes an app needs Advanced Senors or something similar- Torque app needs the paid app (Torque Pro) and GM advanced sensors installed. Also check ABOVE 1000 RPM.

 

[east302]

Looks like Dash Command is strictly monitoring Timing. I don’t see Cam Retard Offset. I’m using an iPhone.

View attachment 274449

It’s been a few years since I used it, but you have to buy the extended PID package on that app. Once you have it, you can add the CMP Retard as a “gauge” and get the value.

 

[bigfootchiro]

It’s been a few years since I used it, but you have to buy the extended PID package on that app. Once you have it, you can add the CMP Retard as a “gauge” and get the value.

I had Dash Command for the 5.7 and had to buy the extension. Definitely worth every penny, and you can read CMP Retard in there.

 

[YukonGTmaster]

Ok thanks. There is a problem with the in App purchase for Extended Parameters in DashCommand. I talked with Support at Palmer Performance , and hopefully they are sorting it out. I unfortunately am having low oil pressure when warm at idle, so I am going to have to pull the distributor again....and replace the new Rockauto oil pressure transmitter I just installed. I am thinking of just taking the hit and buy AC delco from the dealer this time.

 

[east302]

I’ve heard that some people had issues with the app (particularly 1997 for some reason) but it worked fine on my 98. Not sure why there’s a disconnect in that, but hopefully they’ll sort it out for you.

Oil Pressure sensor can be replaced without pulling the distributor itself. Having the socket helps...




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[YukonGTmaster]

I’ve heard that some people had issues with the app (particularly 1997 for some reason) but it worked fine on my 98. Not sure why there’s a disconnect in that, but hopefully they’ll sort it out for you.

Ok thanks! That tool would definitely help. I will check it out.

Oil Pressure sensor can be replaced without pulling the distributor itself. Having the socket helps...




Sent from my iPhone using Tapatalk

 

[1BADI5]

I just marker and took a picture of where the rotor was before i pulled the old distributor, then when I installed the new one I lined it up. Pain in the dick job and was a clear reminder of why I prefer fuel injected/individual coil systems