'90 2.9 to '00 4.0 ohv

[nesralyrrej]

So I'm working on swapping my ranger to a 4.0, the 2.9 is absolutely gutless. I picked up a 2000 explorer 4.0 that was complete, plastic intake to oil pan. Mass air air box and ect I've got the trans code m, which is the strongest i believe.

So, I need to make a junkyard run to get an engine harness out of a 89-97 4.0 ranger, right?

He gave me an ecu out of an 98 which should have the pats or whatever the security system is, correct? So I can't use it.

So I've heard different things both ways that I can use the explorer harness, but I don't think I can because the motor is obdII.

I have heard that the '90 m5od tranny won't bolt up to the '00 4.0 on the bottom? Is that true?

I have read through many of the articles any never gotten the information, so any help would be great, because my 2.9 is on its last legs.

 

[nesralyrrej]

Also, why would I need the body harness? Wouldn't it be the same?

 

[SenorNoob]

If, you're looking for a harness that just drops in, you'll want a 90-92 4.0 Ranger harness and ECU. The 4.0 didn't come out till 90 and in 93 the underhood layout was changed.

With that harness you may need to change a sensor or 3 on the engine to have the correct connectors.

You shouldn't have a problem bolting up your transmission.

 

[nesralyrrej]

Thanks for the reply, I've heard the plastic intake manifold won't work with the older trucks. Is that true?

What about the body harness? Shouldn't that work fine