that i CAN'T take the intake manifold completely off of the car??? everywhere i look, including bentley, it's just "take it off, already". and yet, the wiring harness passes right between #3 & #4 intake runners. i wonder if this is standard, as it looks like a P.O. or mechanic might have done a 'home job' on the harness. lots of electrical tape?

where the wiring bundle passes thru the firewall to the ECU, there is no connector, just the harness passing thru the firewall. complete removal of the manifold wihout disconnecting everything is an impossibility. i WAS hoping to clean it, then paint it. oh well. now it's just sitting on top of the valve cover... new gasket anyway.

thanx for taking a look.

vytas

When I replaced the rotted harness on my '86 with a new one from BB sponsor, RPR, I used the intake manifold as the "center point" for withdrawing the old harness and inserting the new one without taking the minifold off (as you need to do in the earlier engines, B23F, for example)

IOW, I unclippped the terminals at the ECU side and from the engine block side then took out the harness through the openig betwen #3 & #4 intakes.

I seem to remember that the harness entered this place from under the intake, not over it. Only the leads to the injectors came up though there.

It sounds to me like you can unhook the injector leads, and mark/remove the terminals at the engine block sensors, gee, you might have to go all the way under the block over to the alternator...

Atleast then you could inspect it, repair whatever needs it, then install it right.

As for the firewall, that should have a large grommet. Maybe it got pushed inside the car, but is still on the bunble.

If it is misssing, you can buy a pound of "duct seal" (a soft, gray putty) from a local electrical supply for under $2 and form a water tight seal after thoroughly cleaning the surrounding area of the firewall.

Then you need to bring that car to the Carlisle Imprort Show so we can see it and get you on track with some issues.

issues? WHAT ISSUES??? haha, yeah, my car has issues...

so, do i take the entire harness off? yup, right on down to the alternator. oh, god...

that wire harness passsing through, isn't it just for the injectors and two grounds? I labeled and disconnected the injector wiring and had no problem removing it.

Are you saying that the harness goes (from firewall) over the 3 and #4 ports and into other connectors below. That would suck. Normally it should go underneath the intake and only the injector and ground wires come up through the ports.

that's exactly what i'm saying. and it does suck. all that injector and vacuum hose stuff does drop down thru the middle (between #2 & #3). but the big fat wire bundle from the firewall does indeed go right in between the intake runners. unbeleivable! just checked my mom's '89, and the wire harness goes under the manifold as you say, not thru it.

does not make my life any easier. unless, of course, someone fixed the harness and did the job (half) right. it's original, because exposed wire (like at the gray block connector) is crumbling. the rest is all taped up for the most part. keeping my fingers crossed, and taping up what's left!

vytas

I have an 86 apart right now and the harness runs between 3 and 4. Brainfart in sweden I guess. You can go right back to the computer and unplug it there and draw the whole thing out through the firewall. If it makes you feel better, all Toyotas are done that way.