This seems like to much work and I’m
Not good when it comes to wiring, what are the benefits on this swap anyway?
This seems like to much work and I’m
Not good when it comes to wiring, what are the benefits on this swap anyway?
Pretty much just a repin of the harness, shouldn't be too bad should you decide to go that way.Originally Posted by maronielb
It's a more modern PCM than the ECU you have now, not sure, but should have a faster clock speed, and more ram? There are probably more people who are familiar with them than the ECU that you have.
Should be able to turn on highway mode for a lean cruise if you wanted.
More info here
http://www.gearhead-efi.com/Fuel-Inj...Information-0D
To be clear I wasn't saying that you should or shouldn't go with that, but only pointing out that it is a fairly inexpensive option before burning the rig down.
Should you decide to do that, you can still use the same scanner and should be able to use the same aldl cable also. Should be noted that there are not any known factory bins for a 350 and a 5 speed for it, there are v6 i4 and 454 bins for a manual transmission however.
While I'm thinking of it, do you have access to another obd1 GM you can plug your scanner in to for throttle % ?
No need to re-invent the wheel. But we can make it better
Just looked at your first picture of the scanner again, I noticed that the pnp or park neutral position is showing reverse
Does this always show this, does it change when you push the clutch in ?
No need to re-invent the wheel. But we can make it better
No it doesn’t sometimes it shows drive/reverse and other times it shows p/n this does not change with clutch depressed or brake pedal depressed. It’s just randomly shows something each time i plug it in. However 90 percent of the time it shows p/n. My neighbors truck is an automatic so i will check tomorrow to see if my scanner changes when i put his truck in gear
I think I’ll keep the computer that i have since i can run the correct bin on it and I’m definitely not burning the rig down i just spent 15k to restore it from the frame up. Yes my neighbor has a 94 I’ll plug my scanner into his truck tomorrow and see what it does
Glad to hear. Too many repairable trucks end up in the scrap yard and are replaced with new trucks that aren't made as good. Well that's my opinion.
No need to re-invent the wheel. But we can make it better
I agree, I’ll sell my 2018 Silverado before i ever sell my 93, there just so well built, reliable, easy to
Work on and parts are cheap. Just sucks that there a bit hard to diagnose since they are Obd 1 but with those cables available that should solve that issue. I didn’t even know there was ways to pull live data on Obd 1 until
Like 1 month ago, that’s way i rushed to buy that scanner i taught i had found gold lol.
I’ll mess with the truck a bit tomorrow and get back to you on the scanner results
So I hooked up my scanner to my neighbors truck, which is a 94 with a 5.7 L with a 4l80e transmission and not only does my scanner show a lot more information on his truck, but I was also able to verify that his throttle percentage at idle was 0% and his idle requirement was 713 and this is in park so that tells me that there’s no issues with my scanner but rather something going on with my truck so if there’s anyway that you can point me in the right direction at this point, I would appreciate that. Also I have attached the pictures of all the readings from my neighbors truck. He’s having issues with a strong exhaust smell /running rich I guess you could say so if you guys don’t mind looking at the pictures and letting me know if any of those numbers stand out to you that way maybe I can point him in the right direction to get his truck fixed thank you.
Last edited by maronielb; 03-14-2024 at 06:15 AM.
On your neighbors truck the IAT (intake air temperature) is -40. This will make it run rich and indicates either a bad sensor or more likely the sensor is unplugged.
Last edited by MO LS Noobie; 03-14-2024 at 02:10 PM. Reason: additional info
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