MAXIMUS1968

How do i get this dad blame wiring harness out of the way, im doing a head removal and putting one of Engnbldrs head and cam in. Any help or pics is appreciated


Bryan

fillsrunner4

undo all the connections and move it aside

MAXIMUS1968

I have taken all connectors loose except the ones goin to the starter and tranny, i just cant get the lower intake completely out

fillsrunner4

ya the intake can be tricky sometimes. are you sure all bolts were removed? if so maybe follow the wires and look for spots they may be bolted or connected to like the firewall

MAXIMUS1968

the wires run right down through the middle of the lower intake, i have it all unbolted and away from the head, i just cant take it out cause the harness runs down thru it

SCYOTA

What engine???? Assuming you have a 22r(e) did you take the plenum off first? I always take the plenum off so you can see everything. Also did you make sure to disconnect the coolant pipe that connects to the underside of the intake? If the harness runs through the intake down to the starter, oil pressure sender, knock sensor you are going to have to disconnect those so you can pull the wiring harness completely out of the way. I usually tuck the whole harness over to the passenger side fender so its out of the way.
More details will allows us to help you more specifically.

anotherjeff

"...starter, oil pressure sender, knock sensor...", AND, the two O2 sensors, and, the speed sensor, and, the reverse switch, and 2 or 3 more connectors, on the greasy, muddy undercarriage. It's either that, or leave the lower intake in the engine bay.

MAXIMUS1968

Thanks for the help guys, it just looks like its to much of a PITA to mess with. I think i'll try leaving it there and cleaning it the best i can

toyota_mdt_tech

Its easier to take the harness out with the head. Pull it loose fromt he ECU, take it all out. As for the intake, dont forget that little 5mm allen cap screw holding it on, near the thermostat housing. And there is a wire that bolts ot the intake (brown ground wires) and then the other end will go to the 02 sensor and tranny.

SCYOTA

What engine are we talking about guys? The 22r-e is quite easy to disconnect all the connections and pull the harness over to the side. There are only a handfull of connections but if you are worried about not being able to put them back where they came just mark them and take lots of pictures.

MAXIMUS1968

This is a 22Re I have the intake loose now, its just i cant get it out because of the wiring harness. What im gathering from you guys is that i can take it loose under the kick panel at the ECU and take the plug loose from the AFM and loose from the firewall, i should be able to then pull the intake out without having to go under and disconnect all the connectors for the tranny? Correct?

SCYOTA

Why would you want to do that? Just reach down below the intake manifold and unplug the connections of the wires that are running through it. There should be about six connections. Unplug them and then you can pull them through the intake and out of your way. IMO it is way more of a pain to take the harness out with the intake especially because your just trying to pull the head.

MAXIMUS1968

I agree its a pain, is some of the connectors under the truck at the tranny? I am not at home right now to see what you are talking about, but it sounds as if you are saying they are right under the manifold

toyota_mdt_tech

Well, we disconnect them from the engien ECU, take a whopping 5 minutes to do, then pull the harness right out of the firewall. We leave it on the AFM, but once off from the ECU, swing it completely out of the way. But just the same, when we remove a head from an EFI 22RE, we pull the head w ith intake and take the harness with it. Once on the bench, its much easier to work with.

SCYOTA

That makes no sense. If you do it that way you still have to unplug the connections from block and the ones going back to the tranny. Why would you want to pull the whole harness???? Once they are unplugged just pull the wires through the intake and your set. Takes only 30 seconds once they are all unplugged.

MAXIMUS1968

Thanks guys!..... I'll give it a whirl