The 8625 runs $0D just fine, you can probably pop that sucker on a chip and go. I have a 8625 out of a 93 S10 and it runs a $0D 350 bin. I would give the manual $0D bin a try before trying anything...
Type: Posts; User: jim_in_dorris
The 8625 runs $0D just fine, you can probably pop that sucker on a chip and go. I have a 8625 out of a 93 S10 and it runs a $0D 350 bin. I would give the manual $0D bin a try before trying anything...
If it is a 7747, the Speedo gear in the tranny needs to be changed. That's how I fixed mine.
The ECM in the picture you posted is designed to run $0E calibrations. It may not work properly with your transmission. If you are not having issues with your transmission, then the memcal you posted...
Ok, from the provided prom ID you have a 7747 ecm running $42 mask with a BCC of AFBW. I am more familiar with ASDU and ASDX. I think replacing the injectors is a good start. Without an O2 sensor it...
That 16127475 number is an internal part number in your blue memcal. It is not pertinent to the discussion, don't worry about it
The broadcast code BHAS is the "calibration" or tune for your truck. It contains tables constants and flags that control things like fueling, timing and closed / open loop. The 8625 is the ECM that...
You might consider trying a $0D mask like BJYL to see if that changes anything. Also, was you cam indexed when installed. I know that you said the dots lined up on the install, but the indexing can...
I missed that, but what I wanted was ecm #. 1project and I both found that by locating the BCC in a spreadsheet available on this site.
Okay, BHAS is a $6E mask from a 93 truck 350 auto ecm is 8625. I have one to put onto my 87 when it's finally back together. The 1263167 must be a remanufactured ecm. Nothi,g wrong there. Lol,...
Well, BHRD is the mask is on the ecm. That is a 94 l van. 4.3l v6 CPI $0D mask. I can't read the blue memcal but something isn't right. I see you changed the ecm, but not sure what the mask printed...
2 thoughts. 1. Is the map sensor plugged into the correct port, and more likely, unless that is an open loop tune, it will not run right without an O2 sensor. Step 1 get an O2 sensor installed
Good news is 68hc11's are well documented. Hopefully your assembly skills are up to the task. I also think that a picture of the exterior of the ecm showing connectors might be of help. Grab an easy...
Key On Engine Off
The oil pressure switch is a backup, I drove my truck for years with it disconnected. KOEO should cause the fuel pump relay to turn on the fuel pump and prime the system. Anywhere from 5 to 30...
It calculates fueling based upon displacement
A 4.3 would be rich and a 2.8 is lean. The 2.8L bin is likely lean enough to damage your engine
If the throttle body has been machined, it could be binding. Another thought I had was this, is your icm on a heatsink with heat sink paste? Overheating the icm could be part of your stalling problem
Something to try is to disconnect the throttle cable and manually flick the throttle to verify it is returning to the same place every time. If it doesn't, your throttle body is binding. If it looks...
Ok, that ecm doesn't have a lot of support, if you cannot find the stock prom you are looking for, the 7747 ecm is plug and play, it has a lot of work done to it, and the ASDX bin is for a 5.7 manual...
When you put the 350 in, did you also change the ecm or the prom? A 4.3 prom won't work very well. If using the original ecm, it is probably an 8625. If that is the case, get a 350 memcal and it will...
While trying to find replacement heads, I looked at a lot of 193 heads. Out of the 8 I looked at 7 were cracked. A burned exhaust valve is common on these heads. Have you done a compression test.
Doing this on my phone, only gives me the option of reply with quote. I also replaced all the grounds and power with 2 GA wire fixed my low voltage problems, but not the stumble. I only found the...
I fought that problem for years in my truck. It turned out to be both heads were cracked at the exhaust seats. And after it warmed up it would miss/ stumble at idle and light throttle. 193 tmi heads...
I am going to second 1project on this. Is actually sounds like a bad pickup coil in the distributor. I had that happen on my s10. It would die, then after sitting it would usually restart. On all tbi...
What hardware are you using to modify your memcal? L51FE is an address in your calibration. If you are using new vortec heads, is your calibration for vortec heads, or is it the original calibration....
Try setti,g your TPS voltage lower, stock GM voltage is .45 volts at idle for a 7747