Socal_Tom

Good morning - in an effort to try to get something back I wanted to post what I found this morning. I got my hands on the shop manual for a 1984 and it appears that there is a ground location that is not discussed very often if at all here. It is at the very front of the car, near the air conditioning fan, below what I think is the receiver. Pictures of it are below.

It is also worth noting that the shop manual does not make any reference to grounds on the shock towers or near the distributor.

GT6ixer

I believe that is MP II shown on the image below. If you go directly to the right of these grounds you should find another set (MP I) near the headlight torque tube.

Socal_Tom

Good morning Nate-hope you're having a good week. I did find the other one and clean it already but thanks for pointing it out., There's a difference between the early and late cars on the grounding points. To be more specific, there are grounding points referenced on the S4 diagram that are not used on earlier cars.

MainePorsche

Hope this is helpful.
Pre S4.

Socal_Tom

Thanks, I assume the ABS ground #7 is NOT present on cars without ABS, correct?

Landseer

Correct.

Are you trying to check the boxes or is there a specific issue you are having?

Landseer

Try this rambling thread for some more detail.

http://forums.pelicanparts.com/porsc...-16v-euro.html

If you are working with 84 USA, you must remove some emissions paraphernalia to get to the critical engine ground above the "O" on valve cover on passenger side.

Socal_Tom

Thanks for the note - currently stuck on a lack of injector pulse issue. The four brown ground wires that terminated on the "O" on the passenger side cam cover were dead, have replaced them but still no injector pulse. I believe it is down to either a bad injector harness or a bad L-Jet.

Much longer thread here https://rennlist.com/forums/928-foru...1984-928s.html

Thanks for the info and response.

Landseer

Funny, I've got an 84 USA with no injector pulse also.
Started with first turn of key in March, sat on driveway running beautifully for 10 minutes.
Died and stayed dead since.
Been too busy to mess with it, but now must move and have so have no choice.
Maybe we can help each other.

Socal_Tom

Happy to try but I need to disclose that I've been unsuccessful so far!

Before doing anything else however, are you sure that you have fuel and spark? Have you checked your fuel pump relay?