INFO Missfire at high idle!

[oicunow]

I have a 1988 ford ranger xlt 2.9l v6 automatic 4x4. The issue is around 2200 to 2500 rpm the engine decides to spit sputter n missfire. The tach goes crazy and the engine boggs down. It doesn't like when you demand power either. The truck will sit and idle for hours without a missed beat. Parts I've replaced are as follows. New iac, tps, 6 icms, intake air temp sensor, distributor, map sensor, cap,rotor,plugs,wires, 2 coils, relays, fuses, pigtails, spout plug, ignition switch, ecm, replaced all grounds and still cannot get it to take a bottle of act right. Seafoam injector cleaner and throttle body cleaner, oil change, alternator, fusible links. Next step is to rip that v6 efi junk out n drop in a 302 4bbl and fix ford's mistake. Any ideas would be greatly appreciated.

 

[franklin2]

What are your codes?

 

[rusty ol ranger]

I answered ya in the other post you made.

But one thing i just thought of...what color is the ignition module youre using?

 

[oicunow]

What are your codes?

86 and 89

 

[oicunow]

I answered ya in the other post you made.

But one thing i just thought of...what color is the ignition module youre using?

The only one offered that year Grey they didn't use black until later on

 

[rusty ol ranger]

The only one offered that year Grey they didn't use black until later on

I know thats why i asked. Alot of people come on here and think the case color dont matter lol

 

[franklin2]

86 and 89

Those are transmission codes.

 

[oicunow]

I know thats why i asked. Alot of people come on here and think the case color dont matter lol

Well I've been doing a ton of research and reading up on this issue checking everything I'm at a loss here on this one

 

[rusty ol ranger]

Well I've been doing a ton of research and reading up on this issue checking everything I'm at a loss here on this one

Did you check the wires inside the coil plug like i suggested in your other post?

 

[oicunow]

Yes the plug is new coil is new and there's 12 volts on the positive with key on and also coil primary and secondary ohms out within specs