Question about 1990 Porsche 928

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Speedometer malfunction I have a 1987 Porsche 928 S4 with 89,000 miles. Recently, the speedometer stays at zero even when the car is moving. After a while the speedometer reads correctly but when I slow the needle seems to stick at about 25 mph. Is this a cable problem. If so, how do I replace it? If not, do you have any suggestions. Also, the gas gauge misreads at the same time. Thanks

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5 Suggested Answers

  • 1 Answer

SOURCE: Replaced battery on 98 Porsche Boxster and now odometer is wrong

I had the same problem and was about to take the car to the dealership tomorrow, but I decided to try disconnecting the battery and see if it would reset itself. When I reconnected the battery the odometer mileage went back to where it was before I changed the battery. It worked!

Maybe it will work for you. Good luck!

Posted on May 20, 2009

  • 15 Answers

SOURCE: Adding automatic transmission fluid to Porsche 928 S4

Mine is an 88 cant imagine its different, thereis a plastic tank on the rhs of the trans that has a screw off lid, you will need the car on stands or a hoist level and with the oil at opperating temp you will also need a bottle pump or some type of plunger to fill it the engine must be running and add the fluid slowly allow time for it to be taken into the trans repeat until at the mark and stays there

Posted on Sep 19, 2009

  • 330 Answers

SOURCE: Where online can i find

Hello there
try this link
http://garage.ideola.com/downloads.html

or this one
http://www.pelicanparts.com/911/911_parts/911_1974-75_parts.htm

proporsche

Posted on Dec 23, 2010

  • 330 Answers

SOURCE: How to change spark plugs for a 1987 928 S4 ?

Hello there

It is not very hard to change them.You will need long extension and a spark plug socket .I will be good if you have swivel adapter ,there are funny angles as you find out,otherwise not difficult job to do.

do you have any other questions?

i will gladly help

proporsche

Posted on Dec 30, 2010

  • 330 Answers

SOURCE: Where is the fuel pump on a 1987 porsche 928 S4?

Hello there

The fuel pump is located in the rear of the car right next to the fuel tank.

From behind the car you need to remove protective (L shape) metal cover (right rear)and then you will see the fuel pump.



let me know if you more info

proporsche

Posted on Aug 15, 2011

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1 Answer

Where is the fuel pump on a 1987 porsche 928 S4?


Hello there

The fuel pump is located in the rear of the car right next to the fuel tank.

From behind the car you need to remove protective (L shape) metal cover (right rear)and then you will see the fuel pump.



let me know if you more info

proporsche

Aug 14, 2011 | 1987 Porsche 928

1 Answer

My 1985 Porsche 928 S4 cruise con trol activates but drops off @ 1 mile/hr, and then surges heavy to make it back up. this is a rythmic pulsing that goes on to maintain speed. should I be looking...


What you are describing is a vacuum leak in one of the vacuum lines for the cruise control or a bad cruise control vacuum servo. I myself am a former owner of a 1979 Porsche 928 5 speed, a very beautiful and extremely powerful stock automobile. Good luck.

Mar 17, 2011 | 1985 Porsche 928

1 Answer

How to change spark plugs for a 1987 928 S4 ?


Hello there

It is not very hard to change them.You will need long extension and a spark plug socket .I will be good if you have swivel adapter ,there are funny angles as you find out,otherwise not difficult job to do.

do you have any other questions?

i will gladly help

proporsche

Dec 30, 2010 | 1987 Porsche 928

1 Answer

I have an 86.5 928 standard trans 73,000 miles can not find clutch fluid resiviour wrmiller12364@hotmail.com


Hello there
your clutch reservoir is part of the brake master cylinder

proporsche

Nov 28, 2010 | 1986 Porsche 928

2 Answers

I am looking at a 2001 base 911. Can you tell me what the scheduled maintainance intervals are and what they entail. The car has 45,000 miles


To stay true to the Porsche value of ownership, you should take the car into a dealership as they electronically input data into their system and a pump is required to do oil changes since their is oil in lines traveling to the cooler at the front of the car. One mistake and you are out an engine.

Feb 07, 2010 | 2001 Porsche 911 Carrera

1 Answer

1986 porsche 928 intake removal and replacement of sparkplugs.


You dont need to take off the intake manifold but the cold air intakes these unclip grab the convaluted tubing and pull it straight back out of the aircleaner then lift it up and un clip the bottom then pullit out of the intake snorkle

Mar 11, 2009 | 1987 Porsche 928

1 Answer

1979 Porsche 928 head lights...


If you still require this information I can email you the79 wiring diagrams bruce.mahony@three.com.au

Jun 04, 2008 | 1985 Porsche 928

2 Answers

Radiator over heating problem


if you hve water bubbleing while engine is running 5 will get you 10 that you have a blown head g asket ,suggest you go to radiator sevice centre,they can pressure test it and also have device to tell you if you have exhaust gas in the coolant. wont take more than 5 min. then you will know exactly where you are at...
youdoit

Jun 03, 2008 | 1987 Porsche 928

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