What's up guys. I'm trying to delete the egr on my 91 Trans am with a 350 tpi. I uploaded the bin opened it up and turned all the egr stuff off. I have the moates burner2. I upload the bin into the buffer then burn the chip. I verify the chip with the buffer and everything checks out. I'm using chip 29c256. The file size is 32k. I checked the off sets and they all seem to check out. When I go to put the chip in the car. It will not even start. It just cranks.I have a stock motor nothing special done to it. Any help would be appreciated.



This is the bin im uploading into the chip

 

This is what i get after the chip is burned.

 

Pretty sure you still just need to double the rom size, or change the address you are starting your programming at.

Addressing should start at 8000 not end just before.
Or
Open the file in text edit, select all, copy, paste, paste, save. You should then have a 64bit file. Burn that to prom.

 

What should I change the starting address too?

 

With stuff like this you REALLY need to thoroughly read and make sure you understand everything you're being told. I've told you how to do this a few times in PM and I've repeated myself here already. The answer to your question I JUST told you. 8000 IS the start address.

Be very careful doing this stuff, failure to follow all directions could ruin your car. If you don't understand something ask a direct question and wait for a direct answer otherwise again, it won't end well.

 

Ok thanks.

 

Not trying to be mean if it comes across that way. I'm just trying to give words of warning to help you. It's not something you can half do.

 

Not at all. I understand. I need to do some more research before I start playing with this kind of stuff. I appreciate ur help thanks again.

 

According to Moates, the offsets in the above screen pics are correct, for the bin file size and EEPROM. http://support.moates.net/programmin...using-offsets/

Where did you get the bin file from? Have you tried programming a chip with no changes to see if it's at least programming correctly? If the XDF is not correct it can corrupt the bin file and cause a no start condition. Also using the wrong bin file could cause a no start condition.

Which way are you placing the EEPROM in the socket? Where are you placing the EEPROM in the socket?

 

I got the bin file from gear head efi. I'm placing the chip correct in the burner the arrow pointing towards the little thing that locks the chip. And in the car away from it. Yes I have tried to burn just a stock bin into a chip and still can't get it to start. So I figured I'm doing something wrong.

 

Oh damn I thought it was 512 not 256. Attach the files you're using. All the xdf, and both stock and modified bins.

 

Ok I'll upload them all

 

Question, what are you using to install/mount the chip in the ECM? If it is the G1 adapter did you place the OEM MEMCAL on it?

You mentioned the PROM orientation as away from the locking lever. That should be correct, as long as the chip notch is at the outer end of the MEMCAL/adapter.

Also, ALWAYS check for the SES/CEL blink at key-on engine off. This verifies that the ECM is running from the PROM and not in limp mode. The test:

While observing the SES/CEL light do a key-on, engine-off. The light should turn on briefly, blink off, then turn on solid. Can repeat the test after at least 10 seconds of key-off.

The blink off then on solid is the key. If the light doesn't blink off the ECM is in limp mode.

If the SES/CEL flashes rapidly the checksum is bad on the PROM.

Also, since this is a stock engine you can remove the PROM and the engine should start and run on the redundant fuel device.

Back to the SES/CEL blink, when I was burning PROMs I did this check EVERY time I swapped a PROM in. If it didn't blink I didn't bother trying to start the engine.

RBob.

 

Rbob yes I'm using the g1 adapter. And yes I checked the ses light it blinks once then stays solid like it does with the stock chip. I tried to load just a stock bin into the chip to see if it would start and still could not get it to turn on just cranks.

 

Interesting, so at a minimum the image burned into the PROM is correct, it is running the ECM. However, the BIN itself may have issues.

From Mike's site: https://www.eecis.udel.edu/~davis/z28/

Grab the AUJP from him:

aujp1615.bin Replacement MEMCAL ordered from GM for '92 5.7l Fbody(Personally Read from chip)

If you are familiar with TunerPro Compare feature can use that against this version of AUJP and the version from gearhead. That would let you know if you are working with something odd or not.

Be sure the stock MEMCAL is plugged into the G1 adapter. This is required to set the proper injector firing rate (among other items).

RBob.

 

How would I get the stock memcal onto the g1 adapter?

 

http://support.moates.net/g1/

Note that with the '7730 the blue cover can remain on the MEMCAL.

RBob.

 

Well I can tell u one thing I didn't have my stock memcal plugged in to the adapter. Maybe that's why it was not working. If it was I feel so stupid.

 

Just be glad the headache is hopefully over.

 

No go...does it matter that my car has the vats key? Maybe it has to be a special bin. The fuel pump also primes though when I turn the key to the on position too.

 

Does the fuel pump prime and then shut off, or just continually run? Doesn't need a special bin for VATS, the ECM side of VATS is the same regardless of bin (for the same application).

 

It primes and then shuts off. Like it's going to start but it doesn't.

 

The fuel pump priming like it is going to start is nonsense. That is a function of the ECM hardware that occurs at key-on (after at least 10 seconds of key-off).

It's been a while, but IIRC, without the MEMCAL the ECM defaults to TBI mode. That will supply 4 times the volume of fuel over what a 8-cylinder engine requires.

It may be flooded and/or has fouled plugs. May be worthwhile to hold the go-pedal on the floor to see if it starts. If not pull a couple of spark plugs and see what they look like.

Of course can always fall back on removing the G1 and installing the stock MEMCAL in place of it. If it doesn't start and run then, well, the problem is elsewhere.

RBob.

 

RBob I asked about the fuel pump priming function, because if it just turns on and continues to run, the ECM is in LHM, ask me how I know. :/

Anyway I am going to suggest putting the original MEMCAL in and see if it starts on it.

 

I meant like if the stock chip was in sorry. Olright I'll keep looking I'm going to upgrade my intake and try the chip later. As soon as I put the intake on I'll just put the erg plate on.

 

Not a good idea to be changing other items until the engine is running...

What is wrong with trying the stock MEMCAL/chip? Only takes a moment to swap it.

RBob.

 

I've come to the conclusion that the boards don't always work correctly. When I read & responded your post didn't even show up. I saw the two of I_R_O_C_Z_2_8's posts in a row without yours in between. Which I now see our post.

There have also been times that I've made posts that were completely ignored. Basically the same as yours in this case. Who-knows...

RBob.

 

Nothing is wrong with it. I just wanted to delete the egr. If I put the stock memcal in it runs perfect. I just wanted to try to burn a chip to delete the egr and air system. The car will run fine if I put the original chip in it.

 

Did you pull a fresh stock bin off the site rbob mentioned and try that yet? I never saw this mentioned after.

I think I recall you mentioning using a bad xdf the. Switching xdf files. If you altered the LU data enough to kill something in startup that could be an issue still.

 

I will today get the bin from there and try it out.

 

Got around to comparing the bins. They both seem to have the same settings. If im correct in the bin i need to have the bin itself, and the xdf file correct? Just those 2 things need to be saved to the bin in order for the chip to work?

 

The xdf is only for modifying. It's never loaded anywhere but in tunerpro so that you can see and edit it. The bin is the one and only file that goes on the prom.

Comparing what bins?
If you're using the same xdf to compare bins modified by you and doing it by opening the tables or flags or whatever you edited that will absolutely hide any change you made with another xdf.

What you need to do is use a compare tool to look at the hex file for differences.

Have you loaded the bin from the link rbob gave you yet? Still haven't seen the outcome of this.

Again you need to start directly answering questions and being descriptive with what you're doing otherwise it only becomes convoluted and his hard to figure anything out on both ends.

 

Yes I uploaded the bin that Rbob showed me. I used the compare bins tool in tuner pro. So to answer ur question directly yes I loaded the bin that Rbob showed me and that one and the one from gear head they look the same from what I'm seeing. And I loaded the bin into the chip and still nothing.

 

This is what i was referring to when i said comparing them.
i went thru every little thing in there and they are all the same setting.

 

That is comparing through xdf. If you altered that file with a different xdf it may not show the difference that is there.

Either way if you loaded the stock bin off the site onto the prom without changing it whatsoever and the ecu is reading the prom but not starting the car it sounds like the whole setup needs to be taken apart and re installed to check for install error I suppose that's still possible. There's something simple you're missing.

 

Yea the car just cranks and cranks. I dunno what else to do maybe the adapter is bad? I assume that could be a possibility too or the chips. The ecm I noticed is a remanufactured one but I don't think that means anything.

 

This is the adapter im using.

 

Try it without the ZIF socket. I have had a couple times where the ZIF socket for some reason has poor contact.

 

How do I pop the adapter off?

 

Small screw driver and patience.

 

Ok ha ha so it just pops out. I'll give it a try

 

Nope still nothing...hmm I've gone back and checked everything as far as the installation of the chip and the memcal into the g1 adapter. Everything seems correct. I'm getting the 1 fast flash and then a constant ses light when I turn the key on and off. I'm thinking the adapter maybe could be bad? Is there a way to check it or should I just buy a new one

 

Take a few pictures of everything installed and post them.

 

Here it is installed. Today I plugged the stock memcal into the g1adapter. With a blank chip attached to it. To my surprise the car started! But the ses light was on. I then swapped the blank chip to a chip that had the bin file attached to it and it didn't start? Could these chips possibly be bad? I also took the memcal out and tried to start it without the memcal and it didn't. When it was plugged into the g1 adapter it did.

 

This is correct, the ECM is in limp mode (SES light on solid), and the engine ran from the redundant fuel device (RFD). This means that the MEMCAL was correctly plugged into the G1 adapter.

I don't believe so as with the burned chip in the adapter the SES does the blink at key-on, engine-off. That blink off verifies that the ECM is running the code on the chip. And that the power up checksum of the chip passed.

This too is correct. The two small chips on the MEMCAL is the calibration for the RFD. Without those the ECM can't run in limp mode.

Basically we are back to something being wrong with the BIN you are burning into the chip. Please post that BIN here and I (and likely others) will take a look at it.

RBob.

 

I uploaded the bin that u posted. How would I post it here?

 

aujp1615.bin
THis is the bin that i recently updated into the chip.

 

OK, this is getting crazy. I compared the BIN you posted above this post to other AUJP's I've sourced elsewhere, they match.

I have one last thing to ask, the stock MEMCAL, does it have a silver sticker on the PROM with AUJP printed on it?

I'm wondering if the MEMCALS PROM has been re-burned with VATs disabled. If not I am out of ideas.

If so, then disable VATs on the PROM you are burning and try to start the engine. Maybe try that anyway, as a VATS failure won't set the SES but will set a code. Can blink out the codes after a non-successful attempt with the PROM/G1 set up.

If it blinks code 46, we found the issue.

RBob.

 

The security light would remain w/key on as well if VATS were being triggered, no?

 

Bulb could be removed.... Module may not be sending the signal to the ECM....

RBob.