I was wondering if a 95 3.0 would run off my 90 ecu and stuff or if they changed things? thanks for the input.

 

Dunno if this helps you but here ya go
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check your p/n here

 

Put er in there. I have a 1990 engine in my 1994, and it runs just great, and passed smog with ease.

 

The engine will fit but no so sure about the compatability of the plugs going into the ecu.

 

most places your not allowed to swap in a older engine then the car itself...but really who listens to that

 

Apparently not a California emmissions test shop.

 

couldn't I just use the wiring harness from the 90 3V-ZE on the 95 3V-ZE

 

That's what I'd try to do. You may have to keep some of the 1990 engine sensors. Like for example, does the 90 and 95 both have a oil pressure gauge? If not, just keep the original 90 sender and screw it into the block in place of the 95 sender.

 

Should be just fine. I run a '91 puter in my '94

 

I looked at both wiring harnesses and noticed for example that the connectors at the distriputer cap are different. If i cut and soder the other one on to my 90 wiring harness would that work? Sorry new at all this

 

Couldn't you just swap distributor caps? Seems like that would be easier. Like Mt. Goat suggested, I would swap as many of the '90 sensors to the '95 engine as would fit....provided the '90 sensors are still good. Soldering is rather tedious work. I swapped a motor from and '89 into my '92 and just used all the '92 electricals. Made it a lot easier.