Topic: v6 question

[CCM Runner]

im building a 95 runner but it came with no motor. i found a smokin deal on a rebuilt 3.0 the only problem is that it is out of an 88 runner. my question is will the wireing harness from the 95 hook up to the 88 or am i sol?

[NorCalToy]

iv found the difference in teh harness's to be only where the knock sensor plugs in. also your 95 probably has 2 o2 sensors whereas the the 88 will only have one.

[CCM Runner [OP]]

what is a knock sensor

[BLACKDOG]

The knock sensor is the wire that comes out from underneath the lower intake manifold.  The sensor itself is screwed into the block in the valley between the heads.  If/when you swap engines, replace the knock sensor.  Its like $30, and it really sucks to put the engine all the way in, and find out you're geting a knock code, when nothing is really wrong.  When you get the knock sensor, just get the one for the '95, it'll thread into the block no problem. 

IIRC, I had a couple of other wiring connections that weren't quite right, but I just cut and spliced connectors from either the donor harness, or off the components I was replacing from my truck ('91)  I also put in an '88 v6. 

[CCM Runner [OP]]

so i tried pluging in the harness and the injector plugs didnt even fit. any suggestions

[BLACKDOG]

so i tried pluging in the harness and the injector plugs didnt even fit. any suggestions

You can pull components (injectors etc.) from your junk '95 engine, so the connectors are the same.  Unless the components are bad, for the most part they'll work just fine.

I put an '88 engine in my '91, and used components from both as needed.  Worked out just fine.

[Snowtoy]

If I read correctly his Runner didn't come w/a motor, so he doesn't have the '95 equipment.

IIRC, the '92+ injectors have a different impedance than the pre-'92, so even if you do happen to figure out a way to connect the injectors they wont likely work.  The rest of the sensors should be the same.

Using an '88 wiring harness and ecu, would make things a lot easier for you.  I am guessing that since the engine is older than the Runner you don't have to smog check your vehicles.

[BLACKDOG]

If I read correctly his Runner didn't come w/a motor, so he doesn't have the '95 equipment.

IIRC, the '92+ injectors have a different impedance than the pre-'92, so even if you do happen to figure out a way to connect the injectors they wont likely work.  The rest of the sensors should be the same.

Using an '88 wiring harness and ecu, would make things a lot easier for you.  I am guessing that since the engine is older than the Runner you don't have to smog check your vehicles.

missed that part.  Thought he was just swapping out a bad motor.

[Dingman.]

I don't know where you are located, but isn't there some rule about not being able to swap in an older motor eventhough its the same 3.0L v6?

[chim]

I don't know where you are located, but isn't there some rule about not being able to swap in an older motor eventhough its the same 3.0L v6?

I dont think people who work at emission stations would be smart enough to open the hood and know what they are looking at and even tell..

[Snowtoy]

^^True, generally speaking.  However the '95 would be OBDII, while the '88 is non-OBDII.  I think even the slowest of smog techs would catch that.

[chim]

^^True, generally speaking.  However the '95 would be OBDII, while the '88 is non-OBDII.  I think even the slowest of smog techs would catch that.

Are you sure it was OBDII in 95? Or did it change with the body style in 96?

[bigarms23]

i think obd2 started in 96

[BLACKDOG]

I thought so too.  Thought it was '96 and newer. 

[Snowtoy]

Are you sure it was OBDII in 95? Or did it change with the body style in 96?

That is what I had always believed as well, but my smog tech was adamant about the date being '95 and newer during a discussion about the new fuel pressurization test that is being done here in CA.  He stated that all new cars had to be OBDII in '96 bit that the changeover started in '95.  I know the '96 Runner is OBDII, but not sure about the '95 Runner.  The trucks changed mid-'95, does anyone know if the '95 Taco has OBDII or is it non-OBDII?  My smog tech isn't a Toyota guy, so maybe he is only going off the year/name and not the generation.

[chim]

I read on another forum that only a few hundred made it out with OBD2 at the end of 95, and those were more than likely the fully loaded luxury models with the first 3rz.... But who knows.. im nowhere close to being a 4runner historian!

[TIMS89CRAWLER]

your wasting time putting a 3.0 in it just do the 3.4 swap and never look back!

[superyota]

if its obdII then you should have an obdII port to plug into under your dash, which i'm guessing you don't.  the motors are the same

The knock sensor is the wire that comes out from underneath the lower intake manifold.  The sensor itself is screwed into the block in the valley between the heads.  If/when you swap engines, replace the knock sensor.  Its like $30, and it really sucks to put the engine all the way in, and find out you're geting a knock code, when nothing is really wrong.  When you get the knock sensor, just get the one for the '95, it'll thread into the block no problem.  

IIRC, I had a couple of other wiring connections that weren't quite right, but I just cut and spliced connectors from either the donor harness, or off the components I was replacing from my truck ('91)  I also put in an '88 v6.  

this is what i would do.  or just get a 89-95 intake with the injectors and everything else on it to swap and call it good.  just my  

hurry up and get it in the truck so you can go to the round up.