eletrical problem

Bob Albo · 08-25-2001, 01:22 PM

It was a nice day in ct, for a ride today
but when I got home to replace fog light
bulbs i then looked at my fuses and noticed
my fuel pump fuse wire was darkend and very hot to touch, the fuse is the correct one and was not blown so I recut the wire and put it back together but when i turn the key on the fuse holder and wire get hot this cant be normal please can any one help my 911

BOB

Bob Albo · 08-25-2001, 05:52 PM

now my relay burnt up ?????????

rstoll · 08-25-2001, 05:57 PM

My relay seems to run pretty warm.

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Robert Stoll
83 SC
83 944

Jorgeman · Jorgeman's Garage

Bob--UNDO anything you did prior to the wire getting hot. That heat is the result of a short or near short and can possibly destroy your cable and cause a fire. You mentioned working on the fog lights. Go back there and make sure you haven't got wires touching ground--or shorting--or the wrong bulbs, etc.
Do NOT leave your car with that wire heating up! Disconnect the battery. Good Luck

george 86T

Britwrench · 08-26-2001, 10:01 PM

If it isn't anything you touched repairing the fog light the probable cause is a worn fuel pump. It is drawing too much current and you will need to replace the fuse board,
the relay and maybe the relay socket and the pump. This is a real common problem.

Check the fuel pump current draw first, although that doesn't always provide the answer.

Bob Albo · 08-27-2001, 02:55 AM

thank you very much for your response I ordered new relays and will order a new fuel
pump this morning this happened a few years ago and I did not want to beleave it happend again. I wanted to wait till someone answered my post before my suspisions were confirmed and then order my parts "from pelican of course". Thanks again.

BOB

Bob Albo · 08-27-2001, 03:09 AM

Why do these fuel pumps go it just does not make sense. When I replace this is there any thing I can do to stop premature wear.

BOB

RoninLB · 08-27-2001, 06:15 AM

Fuel pump = electric motor = motor windings = windings "sag" = high current draw........heat and load contribute to this. This may be the situation, makes me wonder about buying any rebuilt electric motor.......Ron

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RoninLB

Bob Albo · 08-27-2001, 06:33 AM

Well if I was NOT a porsche fanatic I would
mod this and go with after market Stuff.
Well I just ordered all my stuff and next dayed it . From pelican,WHO ELSE!!!

BOB and his 80 911SC

jsmarcus · 08-27-2001, 08:32 AM

Bob,

Did you put in a higher wattage bulb in your fog lights? More drain where it shouldn't be causes stress and strain elsewhere. I blew a relay instantly by making that mistake and at about $20 a peice, I don't want to make that mistake again! If you are increasing the power of your fogs, make sure to increase the size of the fuse and relay as well.

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Josh
Black on Black '84 Carrera

Early_S_Man · 08-27-2001, 08:59 AM

The windings do NOT cause 99% of the motor failures out there! With fuel pumps, particulate contamination in the fuel causes extra drag and wear, which translates to extra current drain and heat! And, the bushings and bearings suffer with more wear, too, as the result of normal aging, but higher loads, especially!

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