87 tbi 350 popping at idle and running rich

[YakkoWarner]

I mentioned the IAT not thinking. TBI trucks don't use one TBI cars do.

Ahh thanks for clarifying!!! Now I won't end up spend a day searching for it....

 

[gmbellew]

The "problem" isn't that its difficult - its that no one makes the tool new anymore and its hit or miss buying a used one as to whether or not it comes with the right adaptors and decoders. I've been trying for almost 2 years to find a tool that can give me the live data...apparently the only way to do it now is to get a special cable, a Windows 10 laptop and a person who knows how to get them to play nice with each other. Without the ability to read the live data, troubleshooting the TBI system does fall back to using a multimeter, vacuum pump and hope.

That ALDLDroid app might be easier to make work but buying the 1320 bluetooth thing doesn't seem to be possible anymore. It seems like the cable and laptop is the only option at this point.

there is also these guys, although it says backorder at the moment...

GM 12 Pin ALDL Scan Bluetooth (Media: CD)

Scan your 82-95 GM vehicle at home!

reddevilriver.com

and these guys for running a laptop...

BoostedNW ALDL 12 pin GM datalogger

This is for any pre-1995 (OBD1) GM vehicle. Everything except the 1995 LT1. You should be able to datalog all of them, and reflash the 94 LT1 as well. This item can be used with TunerPro RT, TTS Datamaster, TunerCat reflash for LT1, WinALDL, and EFI Live

boostednw.com

or here

OBD Diagnostics, Inc. - OBD2 All-In-One Scan Tool w/ USB

The OBD2allinone pc scan tool to turn off the check engine light on OBD2 cars and trucks is made and sold by OBD Diagnostics Inc. Our automotive diagnostic tools can read and log any obd check engine code data.

obd2allinone.com

 

[devildogcummins]

I may have to look at this myself. I keep getting lean code error and can't find it, and the spray patterns "seem" nice and even. How hard was it to swap the injectors (based on the way my wiring was butchered when I got the truck I'm assuming someone did this once before).

Someone also mentioned an intake air temp sensor - thats one I have not heard about before so never checked on it.

It's a very simple job, you will need a new pod gasket, and make sure not to over tighten the pod when reinstalling. a 15 min job even not knowing what your getting into. I bought my gm reman injectors from Rebuilders specialties in Forney texas. They go through the entire injector and then flow test afterwards. Around $100 for 2 injectors and gaskets