'87 Bronco II sputtering under throttle when cold, goes away after its warmed up

[SenorNoob]

The adapter would have to more complex than the standalone reader AND likely require special software on the receiving end to understand the 2 or 3 digit codes.

The Innova 3145 is about as simple as it gets. if you want a display. You can use an analog meter or test light to read the flashes right under the hood too.

My first few times I taped wires to an old backup light bulb and stuck them in the test socket.

 

[Ottieotter]

I dont know for sure....but i kinda doubt it. EEC-IV (obd 1) spits out simple 2 or 3 digit codes and offers very basic info.

But yes they will produce codes, and that reader comes with a book (or it used to, i assume it still does, if not there are EEC IV code lists everywhere online) that will generally put you atleast in the neighboorhood of whats wrong.

But with no check engine light you have no idea if its throwing codes untill you plug it in lol.

The adapter would have to more complex than the standalone reader AND likely require special software on the receiving end to understand the 2 or 3 digit codes.

The Innova 3145 is about as simple as it gets. if you want a display. You can use an analog meter or test light to read the flashes right under the hood too.

My first few times I taped wires to an old backup light bulb and stuck them in the test socket.

Alright, thanks guys! I may end up doing the multimeter method today just to se if there are any codes in the ECU

 

[Cees Klumper]

You do need the correct OBD1 reader, well worth the small cost.
My '90 BII has almost 250K miles on what I believe to be the original engine and runs flawlessly when cold as well as at operating temp.
It sounds to me like it could just be a small vacuum leak at the intake manifold or elsewhere, that closes up when the engine heats up and the metals expand. These engines are very sensitive to vacuum leaks, as well as to the correct routing of the various vacuum lines that may have gotten mixed up sometime in the distant past.

 

[RangerReviver1990]

Mine seems to start and run fine while cold and not under load, it's when the engine gets put under load that it starts falling on its face until its warmed up enough

My ‘90 4.0 does that exact same thing, runs smooth when cold until you throw it into drive and it starts shaking and sputtering