fernin928

Can anyone help me with a description of the location of the crank sensor on a '82 928? and any tips for removal and replacement? It would help me a lot thanks.

hacker-pschorr

1982 928 does not have a crank sensor.

The "green wire" that is connected to the distributor is more or less the crank signal for the early cars.

This applies to all 78-84 cars except for the 84 EuroS. 928's with a crank sensor it's on the upper bell housing above the flywheel.

What is your issue?

fernin928

Thankyou for that information.. guess thats why i can't find it.. My issue is that I have no spark and the fuel pump will not run with cranking, have replace the ignition control brain and the ignition switch hoping that might solve the problem, with no change. any help would be greatly appreciated.

hacker-pschorr

All the fun basic stuff:

1. Check the rotor. I've pulld of dist caps to find rotors cracked in half

2. The "green wire" is very suspect. Make sure it's even there and/or not cut in half. It goes from the back of the distributor to a connector above the ignition brain in the passenger side of the engine compartment.

3. You can jump the fuel pump (relay number excapes me) to keep that on.
It will not keep running if the car does not fire to keep the engine from flooding. Do you hear it turn on for a brief second when you turn the key to the on position?

4. When you say "ignition brain" are you talking about the square box on the passenger side between the radiator & the engine (as noted above near the green wire)?

5. Coil could be shot (or coil wire)

6......few more things will hit me

Where are you located?

Jim bailey - 928 International

Also the timing belt may not be turning check by cranking the engine with the dist cap off and see if the rotor is turning. As a test run a jumper wire from the jump start post 12 V to the small positive wire on the coil. That gives it a full 12 v (by passes the two resistors on the inner fender near the radiator) do not run it that way for too long as it overheats the coil. As mentioned the green wire is a common source of such a problem especially the connections near the fender. Has the car EVER being running for you ??

fernin928

It was the green wire! gave it a wiggle and it fired right up.. Thankyou so much for your help.. I'm glad i asked, and wished I asked earlier.. any suggestions on how to replace it? Thankyou again for all your help..

hacker-pschorr

Call Jim Bailey ASAP and order a new green wire. You do not want a faulty one, it will never run "right".

My 79 had an ignition miss only above 4,500 rpm under load - it was the green wire. Looked 100% perfect on the outside.

mark kibort

that green wire has probably caught everyone. i remember a tow when i knew nothing about these cars.
the green wire = the weakest link

mk

Jim bailey - 928 International

I have the wire in stock can send it today ! Glad you found the problem and a minor one at that !!