can't get off limp mode & trying to race tonight - Third Generation F-Body Message Boards

turbotater · 09-19-2008, 05:58 PM

short story version : 92 firebird 730 ecm
cars sits 1 1/2 years / i loan my chip to a friend / i change laptops
i change exhaust , port more on intake & install 30 lb injectors
i lost old bin and the chip was changed for other application

i can't get ECM to see chip ,starts and runs but i "assume" in limp
because no changes i make in program effect the way it runs and
SES light is always on .
i am starting with this bin
http://www.moates.net/files/1)%20Sto.../AUJP%208D.BIN
i am using this xdf
http://www.moates.net/files/3)%20Bin...0Motors/8D.xdf
I took the original lower VE table x .73 and then approximately
20% less at < 70 map for the cam i run
changed to 30 on inj constant
changed to 784 on engine volume
vats off
the chip notch faces away from the handle
what the hell is going on !!!! i have tried the super .xdf same thing
tried new ecm same thing . won't start with no chip in socket
starts with chip but always SES light and no matter what i do in
VE tables - idle speed tables - timing tables no changes physically
to car . if i can get control of the ECM i can do the rest by emulating
realitively quickly ..someone tell me what i have forgotten in the last 1 1/2 year

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RBob · 09-19-2008, 06:36 PM

Quote:

Originally Posted by turbotater

short story version : 92 firebird 730 ecm
. . .
the chip notch faces away from the handle
. . .

The notch in the chip faces toward the outside of the ECM. Not knowing which way the ZIF is installed this is the only way to describe the chip installation.

Note that if the chip was installed backwards is may no longer be any good.

Always look for the SES blink at key-on, engine-off. SES turns on briefly, blinks off, then comes on solid. With the blink the ECM is running from the PROM. No blink, no good.

RBob.

turbotater · 09-19-2008, 07:32 PM

chip is installed that way
engine starts - a few seconds later the SES
light comes on stays on...

JP86SS · 09-19-2008, 07:33 PM

Memcal on the adapter backwards?

turbotater · 09-19-2008, 07:39 PM

turn key from off to run engine light comes on then blinks
off once then back on
turn key to start engine runs a few seconds then SES light
comes on stays on

turbotater · 09-19-2008, 07:50 PM

http://i3.photobucket.com/albums/y97...r/CIMG1003.jpg

LoudmouthSS · 09-19-2008, 08:32 PM

if you stick that chip in just once the wrong way and turn that key..its toast. I learned that the hard way...3 or 4 times ha.

Mine did the same thing i would accidentally put it in the wrong way and turn the key and then realize and flip it around and the chip was garbage after that.

However when i was tuning my maf 88 iroc, the ecm just died suddenly after a chip swap...got stuck in limp mode. Bought a new ecm and problem solved

RBob · 09-19-2008, 08:37 PM

Quote:

Originally Posted by turbotater

turn key from off to run engine light comes on then blinks
off once then back on
turn key to start engine runs a few seconds then SES light
comes on stays on

Check the malfunction codes to see what the ECM doesn't like. All it takes is an unplugged sensor to do what you are seeing. Most likely (99.9%) isn't limp mode, but a default mode for a bad sensor.

RBob.

turbotater · 09-19-2008, 09:19 PM

i finally got connected to the ALDL
it shows no value for prom ID amd
a whole bunch of other stuff
http://i3.photobucket.com/albums/y97...r/untitled.jpg
----------
btw that screen shot was with the engine running

what the hell do i got to do so the pic shows up
without it being a link ????

84redta · 09-19-2008, 09:51 PM

copy the [IMG] code on the page.

turbotater · 09-19-2008, 09:54 PM

got it

turbotater · 09-19-2008, 10:43 PM

here is the motor combo for reference

turbotater · 09-21-2008, 01:06 PM

up date : i am never able to access withthe autoprom
even after the program says i am connected.
i boroorwed a snap on scanner and it shows the
values but the engine temp sensor is at -39c
so i am going to change the sensor .

any ideas on using the auto prom?
i have the switches on the back of the autoprom
set in position 2 in my diagram. i set the baud to 160.
and it shows connected but there no data displayed
any ideas

JP86SS · 09-21-2008, 01:25 PM

To use the AP as just a logging cable,
The switch 1 should be away from the cable connection (outward)

To use it as an emulator, the switch going inboard (twards the connector)

Switch 2 sets if you want to have a resistance on the diagnostic "jumper"
You want it in the center (not jumpered) to log data.
Putting it into jumpered position will flash out any codes on the SES.

For a 730 running $8D you should be using 8192 baud rate.
Download the $8D "ADS file, I didn't see where you loaded that.

The XDF is for editing parameters in the bin file.
The ADS is the definition for datalogging.

turbotater · 09-21-2008, 01:34 PM

got the .ads file
i'll change the buad and switch position and
try again

btw thanxs for the help

Six_Shooter · 09-21-2008, 01:39 PM

A '7730 has 8192 baud ALDL rate. You might want to change that.

The "values" you are seeing in that screen shot are default values, meaning there is no data.

Tuner Pro RT, correct? What ads are you using? Does the status bar show "CONNECTED" in a blue box for the ALDL connection?

turbotater · 09-21-2008, 09:34 PM

there are 2 .ads files i have tried
1227730.ads & 1227730_8d.ads

there is a box in the edit aldl datastream definition screen
where you have the option of placing a check mark in a box
for 160 baud . if i do not check that box it will not show
connected to the ecm .

latest update : changed ecm temp sending unit and now
the snap on scanner shows the correct temp but i now
noticed it shows 6375 rpm as soon as it starts and never
changes . so now i have to figure out what's up with that .

again thanxs for the help guys

Six_Shooter · 09-21-2008, 09:59 PM

Hmm, I really need to get my test bench up and running so I can help out with things like this.

Hopefully someone will know soon how to rectify this.

JP86SS · 09-21-2008, 10:06 PM

I don't think the code is running or he would be getting data.
The datastream is not outputting.

Try setting the switch to output codes, you should get code 12 with engine not running. If no codes then its FUBAR.

Reburn your chip and try to connect again.
Blank the chip, confirm its blank, re-burn it, confirm bin to file.

If that still doesn't work take out your chip adapter and try to use only the Memcal like stock and connect.

turbotater · 09-22-2008, 05:40 AM

that's what has me confused
with the snap on scanner i can see all the data
but i don't see squat in tuner pro

and yes i do get code 12 key on engine off
it was also kicking out code 15 (low temp)
until i changed sensors

JP86SS · 09-22-2008, 12:04 PM

Check that your data cable has pins E & M connected together.
Some cars use "E", and some cars used "M" for data.
Most cables have this but not all of them.

turbotater · 09-22-2008, 05:45 PM

latest update:
i took the ignition module to O'rielly's auto parts
and had it as well as a new spare module i had tested .
the one that was in the car failed on "reference pip"
i checked my new spare module and it passed ..
i installed the new ignition module in the car and now
it has no SES light and the scanner shows no trouble codes

but wait , the scanner still shows engine speed at 6375
all the time ... any ideas ?
i can't do any tuning until i can get the ECM to see different
rpm ranges