Tonyrodz's Tahoe Build Thread

[HiHoeSilver]

The 1st scans were just at idle. Unfortunately I wasn't able to get pics of the fuel trims on the short ride today. I did see a high of 10 on the short term trims--I think on bank 1. Driver's side? Do you know how to reset the trims with the Tech 2? I'm guessing it would be under the "Special Functions" menu?

Close to 0 at idle, and +10% under load? You may have a fuel delivery problem, my friend.

 

[Tonyrodz]

Close to 0 at idle, and +10% under load? You may have a fuel delivery problem, my friend.

I gotta check the fuel pressure. Wouldn't it be on both banks then? Showing a problem just on bank 1. Pump is whining or making any funny noises.

 

[HiHoeSilver]

I gotta check the fuel pressure. Wouldn't it be on both banks then? Showing a problem just on bank 1. Pump is whining or making any funny noises.

Again, I might not have gone back far enough for all the deets. You wont get a rich/lean code until that long term hits +/-25, so its really only halfway there.

The pump would typically affect both banks similarly. Maybe a line/rail/injector problem? More data, more data!

 

[Scottydoggs]

this is kinda why i put a dual wide band in my camaro. with its big cam the long term fuel trims on both banks at idle are -14 -15. once moving they drop to -5 or lower. wb on both banks reads the AFR at 14.6 to 15.3 back and forth at idle, so its not really rich if your trusting the wb. figured it would be nice to see if one side was lean or rich being a boosted set up.

 

[iamdub]

Again, I might not have gone back far enough for all the deets. You wont get a rich code until that long term hits +/-25, so its really only halfway there.

The pump would typically affect both banks similarly. Maybe a line/rail/injector problem? More data, more data!

 

[Tonyrodz]

Tested the fuel press at the rail. Looked ok to me.
Key on, engine off.
After 5 mins.
At 2500 rpms.
At idle.

At 4000 rpms
Shut off and still holding pressure after 5 mins.

 

[Tonyrodz]

Random pics of the Tech 2 while it was running.

 

[Tonyrodz]

More random.

 

[Tonyrodz]

Tech 2 readings.

 

[Tonyrodz]

Sorry for the random pics, but hopefully there's info in here that might shed some light on my issue--I don't know how to interpret it.