1973"S" quick question about rear fusebox

[marc weintraub]

Hi guys,

I don't drive my car very much and about three weeks ago, I started it up and it started running very rough. Checked the plugs and wires... they were fine, checked the rotor and points... they were fine. Finally, I went to set the timing and check the rear fuse box and ... no power going to the rear fuses. All of the fuses are fine and the car runs, but the idle is very erratic and it's never been like this before.

The distributor is advancing fine, but it appears as though nothing in the rear is functioning properly except the CDI..

Any help is appreciated... I am stumped!

Marc

[pjv911]

Wiggle test?

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69`lightweight
RS carrerra clone

[marc weintraub]

did it... I wiggled and it didn't do a thing... just kidding. I wiggled, reseated, changed relays (all new) and fuses and still nothing. This is making me nuts.

There must be a relay that connects the front box and/or battery to the rear box. The RPM transducer, etc. are not getting power, but the car still runs... like crap, I might add.

Marc

[Superman]

Marc, I don't have a clue about early S wiring, but I wish you well. It sounded to me like you were making a decision to simplify your life and put some distance between yourself and the Big Apple. Nothing wrong with NYC, but I just hope and believe you will be much happier if your agenda is to "simplify." I believe in it. I'm still praying for folks like yourself, and there are millions of us doing that.

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'83 SC

[marc weintraub]

Hi Superman,

Thanks for all of the supportive words. My wife and I have been looking to move for about 4 months and I guess the WTC disaster was the last straw. We are looking to move to not get away from NYC, but to get a better quality of life for the family.

I will still keep our place in the city... at least for a while. I must admit, I have been impossible to live with lately. I lost a few too many friends and I was supposed to be in the towers that morning at 9am, but my client missed his train and cancelled the meeting. I saw the towers come down and I think that was and is a memory I will keep for the rest of my life. Thanks again!

All The Best,

Marc

[Early_S_Man]

Marc,

All of the power to those fuses comes from one or the other 14-pin connectors ... the only red wire on either connector. So, if it isn't oxidation or corrosion on the silver-plated pins of the connectors ... it may be corrosion on the 'wire' side of the connectors, or at the fuse block. It isn't 'one' single point failure, since two fuses get power from one connector, and the other fuse gets power from the other connector ... but it may be the same problem in two differenmt places!

The following diagram is wired the same as the '73.



Good luck!

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Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler

[marc weintraub]

Warren,

Thanks for the info... I had seen this on the pelican website. Am I correct in saying that the rear fuse panel gets it's power from the front upper fuse panel of off number 8 fuse with a ground going back to the battery post?

If I am, I will check and replace that tomorrow. Thanks for all of your help.

Marc

[Early_S_Man]

Marc,

The #1 and #2 fuses get power from the junction at that #8 fuse up front, but the #3 rear fuse gets power directly from the alternator hot lead, through the 14-pin connector.
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Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler

[This message has been edited by Early_S_Man (edited 09-29-2001).]

[marc weintraub]

Warren,

That sounds like great news. I will check that in the morning and see what I get.

Thanks Again!

All The Best,

Marc

[Roland Kunz]

Hello


There is a small cable connector between the fuseboxsided wireloom and the ignition wireloom.

The ignition is fused in the front box ( check that fuse )
The rear fuse is behind the ignition so you will not get stranded if something behind happens.

Also check if the rev switch for the MFI is workin as it also runs from the same source.

Check that or run the ignition wireloom from a other source to look out the problem. Also there is the fuelpumpwireloom runing forward.

Grüsse,
Roland

[marc weintraub]

Hi Roland,

Thank you for your response. The car runs, but there is definitely something wrong. The idle cannot be maintained at the proper RPM and teh RPM tranducer along with the speed switch are not working. I have checked the front panel fuse number 8 and it is fine, along with the 3 fuses in the rear fuse box. All relays have been changed with new ones and I will keep lokoing for answers.. Any other thoughts are appreciated.

Marc