Out of my respect for Vader, I created a new thread like he asked.
<a href="https://www.thirdgen.org/techbb2/showthread.php?s=&amp;postid=584763#post584763">Vacuum applied to EGR at idle</a> is my past post for refrence.
I have been reading a post in the TPI board and they are giving BLM numbers alot, so I will get some hopefully tomorrow. Just a question I had earlier and wasn't really answered, when I inserted the 10K resistor between A and B terminals in the ALDL connector to induce limp home mode, I felt no difference in the way my car ran, why? Im also waiting for greaseape to reply again, he hasn't been around, however input from anyone will be of help. Thanks guys

 

PP,

I'll be the first to tell you before I get jumped on by everyone else - I think that I misinformed you about the resistor value. A 10K resistor should send a diagnostic string request to the ECM (just like your OTC Scanner does). A 3.9K (3,900 ohm) resistor should force backup fuel and spark mode (Limp Home). I get those two values mixed up all the time, and I'm still not certain ¿? I get confused so easily when my dog is not available for consultation.

What you were doing with the 10K was asking for a serial data string, but there was nothing there to receive it (or it was already plugged in there and getting the data). At least the resistor shouldn't have set you back more than the cost of a new postage stamp, and there was no risk of doing any damage. Sorry about the misleading information - I screwed up, again. Sometimes I have to, since "down" and "sideways" gets very mundane.

If the car was already using the backup tables due to some error code present, there would be no difference noticed. There should be a noticable difference between BLM and Backup, since spark advance is very limited in Backup, and fuel tables tend to be way rich (just to get you home).

As for your Divert Air control, you can do that manually at the ALDL by jumping the 'A' and 'C' terminals (or just grounding the 'C' terminal) to force the diverter solenoid to operate. You'll probably have to do this cold, since the ECM will port the air when cold only. I realize that you will probably have your OTC plugged into the ALDL, so you may have to install the jumper from the back side of the ALDL connector. We won't EVEN go into the benetifs of probing from the back side.

Man - If some of those openings don't get GGA back into the mix, he must be one pretty busy primate. He should be all over this like a chimp on a bunch of fermented bananas...

 

BLM stayed at 128 and dropped to 127 for about 5 seconds. I hope greaseape is doing ok, its tuff losing someone close.