Finally started my car and noticed I am getting way to much fuel, coming out the exhaust and in the engine oil. Checked injectors none are leaking.

After doing some searching here I found that it could be the prom. I just burned my first chip and used the super aujp v4. The only thing I changed was I upped the injector size to 26lb since I am using ls1 injectors. Like I said, first time burning so i'm not really sure what to be looking for but the Crank PW vs. Coolant temp and the Crank PW Multiplier vs ref pulses 1-24 seem like they could be out.

Here is what they are now:






p.s anyone know how to change the display units in tunerpro?

 

So after doing some more research I changed the crank PW multiplier to .75 x8, .50 x8 and .35 x8. That seems to have eliminated the excessive gas on start up.

She is still running rich though and if I set the timing to 6 before tdc the idle runs up to 2500rpm and stays there. If I set the timing to 0 or 2 degrees after tdc the idle comes down to normal. So, what should I be looking at to get the idle down to where it should be? IAC maybe? Or is it something in the bin?

One thing I will say is it started up with no problem at all, don't even think it took a full crank.

So to recap, two things I need to get fixed so I can do some data logging. First and main thing is the idle so I can properly set the timing and second is to lean it out abit. Any and I mean any help would be appreciated, I am a complete noob when it comes to tuning.

 

Reset the TB so your idle speed is being controlled by the IAC. It sounds like its open too much. Readjust the TB screw to close it down and then reset your TPS.
IAC counts are a good indication as to what is controlling the idle. If you have zero then the TB is doing the work, If the counts are high like 150 or more then the TB is closed too much.
Get it to be 20 counts at idle or less and things should get better. Then you can go after the rich fuel in the VE tables.

 

I'm going to apologize in advance for sounding like a dumb @ss but how do you reset the iac? Disconnect the battery? The IAC counts I would get when I start data logging right?

 

you asked how to do something you've never done before, so your not sounding dumb at all

this will tell you how to set both the IAC & TPS,
https://www.thirdgen.org/tpimod2

 

Ok, new problem. I just installed the fans and they come on as soon as I turn the key on when the car is cold . If I put just the stock memcal back in they don't come on. I'm also getting a code with the s_aujp chip and not with the stocker. I am going to be checking the code shortly.

Any Idea why the fan would be coming on? The bin says it's supposed to come on at around 95C.

Haven't set the IAC yet, I had to order a new IAC plug as mine was toast so I will reset it when the new plug gets here.

 

Ok, another problem. I can even check the engine codes. I put the pin in to the 2 top right slots and the light does not flash, just stays on steady. I tried putting it into the top and bottom far right slots and get the same thing

Super aujp v4 is the right bin for my car no? 1990 GTA with the 730 ecm.

attatched is a text copy of the bin if anyone feels like looking it over.

 

If you can't get it to flash codes then your bin is corrupt or is a bad burn.
Communication will not work with total program failure (fans will come on also)
The program will work with your setup.
If you are using TunerPro it will calculate the checksum automatically when you make changes and save. If you are using a different means for burning the chip be sure the checksum is either disabled or is properly updated when making changes.
Use the 41026 version and be careful with mass transferring of your old settings if you are doing so.

One last thing I didn't see you mention.
When you tried the S_AUJP, did you have the memcal installed onto the chip adapter?
It must be there.

 

Ok, I am using a usb willem programer with the software it came with for chip burning. How do I disable the checksum or make sure it is properly updated? Is that done in tunerpro or the burning program?

I went and checked my settings in the burning software and noticed I had a eprom chip selected instead of an eeprom chip. Burned a new chip but it made no difference.

This is a link to the burning software I am using: http://www.mcumall.com/comersus/stor...l_download.asp



Edit: What would happen if the chip was put in the adapter backwards? I thought this may have been the issue but when I flipped the chip around the car wouldn't start and the fuel pump never seemed to shut off.

 

Don't forget to check for the SES blink. Check every time you do a key-on. If no blink, then don't bother to turn the key to crank.

RBob.

 

I'm assuming you are using tunerPro to make changes so the checksum should be OK.
The next thing is the way the chip is being burned.
Check all the settings:
Type of chip
Offset value if needed for the 512 size chip. This is probably the cause.
Moates site has the offset values for common programs and chip sizes.
You have a 32k bin program.

 

I tried different offset values that I was able to find but none worked. I used the stacker tool in tunerpro RT and that may have worked. I just put the chip in and turned the key on, the light flased once then stayed on, the fans did not come on.

Does that sound right?

 

that sounds right & you should also be getting data now.

 

Any one else notice the error in the picture on post #1`of this thread?

Notice that the chart for Crank Pulse Width has an error in it. Note that the temperatures listed "below zero" are not negative numbers until the chart gets to -40. Open up the corresponding graph and you'll see a big "Z" shape to the results. I couldn't find the proper place or figure out in the software as to how to correct the positive numbers to negative values. I saw this same error in bins I'd downloaded from Moats.net for the S_AUJP V4 files in the custom binaries section and several others on file as well.



Anyone corrected this already?


Dave Buchholz

 

Yes, mine is the same

 

If you edit the XDF item you can change the labels for the temps that should be negative. However, I noticed the label for the axis opossite of the temp is shown at 0*c instead of all the way to the left at -40*c. I see this for several tables that reference temperature. Not sure how to fix that.

 

Nice find, Thanks for the feedback.
I'm checking all of the items with temp tables now to see if any others have this issue so far the only ones I found are:
$03AF Crank PW vs coolant
$04F6 Loop Closed Param, o2 R/L Offset Vs. Coolant Temp

To correct the labels so the graph can be used to edit:
Select the item,
Press F2 to open the XDF editor
Goto the "rows" tab
select each value and enter the correct negative value. (look at the value before you type the - so you remember what it should be)

Please report any others you have come across as being incorrect.
The only way these get corrected is if someone questions it.