dreamer1q

Alright went to the track last weekend to do a little tuning with some of the guys from the board. I have a rich condition that I cant get rid of. Thought maybe the BLM"S. Being I know knothing about the I fiugred I could learn. Then I hear talk about the eec cansiter could cause this. Which reminded me of something I seen when logging the car on the highway. When I am under throttle my eec purge will climb to 100% and not drop. Once I remove my foot from the pedal it will drop to 0%, but as soon as I am back on the gas it starts to climb. Isnt it suspose to purge when it hits 100%? Mine dosent all the time. Any help would be appreicated, I have got to track this rich condition down. It runs so rich, that is it leaving residue on the rear bumper and making the rear plate turn colors. I was going to ignore it till the winter as we are building the motor up over the cold spell. But I dont want this to come back next year if it isnt in the engine. Where and how should I start to track this down. I have datamaster logs of it, and tunercat to adjust it. But this is getting out of hand when it starts to discolor the plate

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Arrest ME Red 1994 Camaro Z28 Convertible
just a chip and a muffler, well maybe some headers

First run EVER
R/T - .675 (on a pro tree)
60 FT - 1.943
1/4 - 13.969 @ 98.77

The Red Rag

dreamer1q

ttt

KGRESOCK

What are your BLM's, are where are you doing your tuning? I'd like to get hooked up with you some time and pick your brain.
Kevin

KGRESOCK

What are your BLM's,(they can be locked if they are a issue) where are you doing your tuning? I'd like to get hooked up with you some time and pick your brain.
Kevin

dreamer1q

I didnt mean to make it sound like I was jumping to conclusions. But I read in another post about the canister and that made me ask the question. The cannister is a 100% purge even when at less then WOT. When on the highway, under partial throttle it will run all the way to 100% and stay there till I release the pedal. once I release the pedal it will reset to 0% and start to build back up once the pedal is touched again.

As for the BLM's, I wont lie, I am JUST leaning about them. Any help you can provide on them would be great. I have logs of my car, under different types of driving. they will fluxuate from one end to the other and yes they are split. They do not follow the same line. If you have a place to start it would help out alot.

Anything else you could use to help me out? I just used the EEC as a starting point since it is possible that is the problem. I dont know for sure, but it is a idea. I also heard that my injectors could be sticking open, in which case the rebuild this winter will fix that since they will be upgraded.

dreamer1q

^^^

96ltz

Im in about the same situation as you.
Heres my info from autoxray scanner:
Block Learn Decel 109.00
Block Learn Idle 108.00
Block Learn Cruise 128.00
Block Learn Accel 108.00
I dont know how to put a link to it but look at Topic: " BLMs increase as rpms increase... " by stevil and see what Injuneer 94FormM6 said.

Ive checked resistance on injectors,new egr,new o2s,ect.

Im still tring to figure out what all this means too.

stevil

You want a link to that?

the LT1 is evil

Yeah, I'm ordering EGR block off plates and about to check that EEC canister. Then I'll mess with the injecters. MAF is fine.

I'll bet it is my EEC canister though... My guess is that it is "full" because I just let my car sit for weeks at a time. Alot of gas probably evaporates while it is just sitting there... sumer heat only makes it worse...

And then I drive it and the EEC just freakin' unloads on my poor LT1. So then I don't drive it as much, because it runs like crap and I don't want to drive it unless I have to... which repeats the cycle.

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FormulaV8.com · 1994 Formula · A4 · 3.23
13.45 @ 102.5 MPH w/ 1.9 60' | 267 rwhp | 307 tq/lbs | 3535 lbs
"I know for a fact he is NOT an Easter bunny"

dreamer1q

keep me updated on this please...I want to know what you find out with your canister

96ltz

Howd u do dat?
I'm just lost on what to start on as I am not getting any codes, it just runns rough as **** sometimes especialy around 1200 rpm.
Does the resistance test really show if its the injectors? Sam Smith sent me a m6 egr valve and said they had less problems with them than automatics. My maf screen is out but looking at some of my old scans everything was more like 120 or so and it was out when I got the car.
dreamer1q, sorry I'm really not tring to take over your post, I thought some of this might help

dreamer1q

No offense taken. the more the merrier. Sounds like we all need a little schooling on these areas.

Things were so much simpler in the carb era

stevil

Actually, my theory is probably wrong. I just checked my cells, and when I let off the gas pedal (cell 06 I think, sometimes 03, 02 or 01) and coast/decelerate... I still run rich, low BLMs.

And I'm pretty sure EEC and EGR go back to 0 when you let off the gas... maybe not. So if working properly, they wouldn't effect those cells. Maybe a leak? Or something else. I'll double check tommorrow.