Steve Wong chip install question

[Porsche 911]

I'm trying to disconnect the wiring plug, but it's stuck in there pretty good and i don't want to force anything and possibly break something. When they say disconnect the box from wiring plug by rotating the box out so that it pivots away from the retaining tab, what part of the picture do i need to pull on to disconnect?

TIA

[warner53]

I got mine out but do not remember how exactly.

Bump

[ischmitz]

There is a metal spring tab hidden behind the black rubber gromet where the thick wire loom goes into the white connector. It is secured by the two little Phillips screws visible in your image to the black connector housing of the DME.

You need to pull that metal tab away in the direction of the thick wire while gently pulling the white connector at that side away from the DME. In your picture you pull on that metal tab towards the 5 o'clock direction. The color of the metal spring tab is sort of golden.

When the connector comes loose it rotates away from the DME box. The other side of the connector has a nose that holds it into place. Don't force it. Once you pull on the tab it becomes real easy.

Ingo

[steely]

Originally Posted by warner53

I got mine out but do not remember how exactly.

Bump

Same here - I remember finding it easier to unbolt the box from the floor as you have done - in order to get some wiggle room, but I don't recall which way.

That said, I do think that looking at the right side in the pic, you may see a small metal bracket with 2 screws acting as a keeper for the plastic connector edge. If this is the case, that is the pivot point, and the other side (left in the pic) has to swing away first. But I could be wrong.

BTW, I hate rotating edge card connectors in general, I just don't think it's good for the pins.

on edit - posted almost same time as Ingo

[Flat6pac]

There is a metal retainer on the right side of the head in the picture. Release the retainer and move the box counter clock wise about 60 degrees and this will release all the pins. There is a key that the head fits into is a locator which becomes the pivot point.
Bruce

[JJ 911SC]

Bullet

You are almost there... Soon you'll experience the SW fine tuning.

Once you got it "pivoting" out of the connector, take pictures of it from the same position of your pics in post 1, and post them.

Why you may ask... Well in a few weeks/months/years someone else will be in the same situation and may do a search and your thread with a documented answer will help some other Pelican down the road.

Cheers

JJ

Steely

If ou are like me, 2 fingers typing... Yeah, your lookalike posting was probably started 5 minutes before the other guy 1 minute answer

[steely]

Originally Posted by JJ 911SC

Steely

If ou are like me, 2 fingers typing... Yeah, your lookalike posting was probably started 5 minutes before the other guy 1 minute answer

JJ

You read me like a book!!
2 fingers and it ain't getting better either.

[kramer747]

do they make these chips for 83 models?

[Joe Bob]

Nope....wrong system. An 83 was CIS, K Jetronic.

84 and up were Motronic and had DME controllers.

I have an 83....but a 91 motor....

One was mechanical injection....the other is electronic.

[kramer747]

cool. I just had fuel injection control relay replaced in mine -it was all corroded. Car had been running in "limp home mode"? ever since I bought it! I kept thinking -man I thought 911's were supposed to be fast. LOL Wow -now it really moves like Jack the Bear

[Porsche 911]

Almost done with everything.. issue now is i can't get the dang DME to fully snap back into place with the white connector! The "pivot point" is snapped back into place, but the far end won't fit back in. Might need to just squeeze harder.

[k8atu]

If you really have the hook on then press a little bit harder........

[DRACO A5OG]

Originally Posted by k8atu

If you really have the hook on then press a little bit harder........

+1, It probably never been opened so it just needs a bit more pressure

Enjoy your HP

[Porsche 911]

Ahhh.. so close but it won't snap in! just almost had like 2 aneurisms trying. About to throw in the towel for tonight. Any more tips on getting the DME back in..

[DRACO A5OG]

Maybe post a video out what you are trying to do?

Remove and attempt install... just an idea.

I would do that but I really hate those 10MM nuts.

[Porsche 911]

Don't have a pic right now but the white "retaining tab" snaps in and out pretty easily (to the right on the orginal pic), but the rest of the white wiring plug won't plug in. I'm pretty sure the retaining tab side is supposed to snap in first before the rest of the plug follows, but it's just not going in.

[ischmitz]

You put the far end with the key (or nose) in first and then rotate the connector towards the housing. Make sure the nose is really all the way in its position then the DME connector rotates onto the DME housing fine. If you are one pin over because you didn't get the nose all the way into its slot it won't work. Hold the connector and the plug at about a 45 degree angle and then try it.

In your picture it is the LEFT side of the connector that gets introduced to the housing first.

Ingo

[Quicksilver]

As a general tip: Put your location into your profile. If there is a pelican close by they can tell. (We all work for beer.)
Go to User CP up on the left side of the menu bar; Under Your profile click on Edit Your Details and look towards the bottom.

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The DME connector should only require a firm continuous force to snap it in. I would carefully inspect the pins on the DME to make sure they are all straight. Also look to see if any junk has gotten into the socket.

When inserting the plug there is kind of a hook at the end of the plug that catches on the black plastic of the socket on the DME. It acts as a hinge to close it. You can try pressing it a little farther (or less farther) into that hinge point to see if that helps. If you are getting it almost closed that means that the pins are lining up so I would look at the metal release catch and see if it needs to be pressed to the release position to get it seated.

[k8atu]

Originally Posted by Porsche 911

Don't have a pic right now but the white "retaining tab" snaps in and out pretty easily (to the right on the orginal pic), but the rest of the white wiring plug won't plug in. I'm pretty sure the retaining tab side is supposed to snap in first before the rest of the plug follows, but it's just not going in.

If I read that right you are trying to put the right side in first (your pic). This is wrong.

You hook the hooked end in (LHS) FIRST, just the end, then pivot the DME around that point, to marry the DME to the connector, all the time moving the RH side of the connector to the metal retaining clip. It should just go straight in.

Good luck.

EDIT: Didn't see above from Quicksilver - same same :-)

[Porsche 911]

Originally Posted by ischmitz

You put the far end with the key (or nose) in first and then rotate the connector towards the housing. Make sure the nose is really all the way in its position then the DME connector rotates onto the DME housing fine. If you are one pin over because you didn't get the nose all the way into its slot it won't work. Hold the connector and the plug at about a 45 degree angle and then try it.

In your picture it is the LEFT side of the connector that gets introduced to the housing first.

Ingo

Bingo!


Now the DME is fully snapped in the white connector. I held off on bolting the DME back on deck beneath the driver's set, and tried starting the engine - it won't start!

I tried disconnecting the Pin 10 wires on the wiring harness to the DME unit, but no luck.. I'm pretty sure I installed the SW chip in the same direction as the stock chip (with the letters/numbers reading the same direction as stock did). Can't think of why else it's not starting..