david_alford

My 1983 S #602 has a 1982 spec CE panel. I say this because I found the fuel pump fuse to be in position 22 as indicated for 1982 versus position 13 for MY 83-84 according to 928 Specialists diagrams.

My 83 owners manual agrees with the 928 Specialists 1982 diagram.

I guess Porsche was using up previous MY parts or something when my car was produced in 11/1982? Anyone else run into stuff like this?

Also, my owners manual lists #19 headlight motor fuse as 16a, but 928 Specialists has it as 25a for 82 and 83-84. Should I go with the 25a fuse even though my owners manual says 16?

Thanks very much in advance, any info is greatly appreciated!

Kiln_Red

I haven't ever heard of a 4.7 L Jet 928 with that fuse arrangement. Strange.

The headlight motor should have a 25a fuse.

Alan

Even on an '82 it was always 25A - seems its a mistake in the owners manual

Alan

david_alford

OK thanks for info on headlight motor fuse.

Weird, right? Fuel pump fuse is supposed to be in #13 for MY 83-84, but in my car it's #22 (When I removed 22 car did not start).

Kiln_Red

What size fuse was in the #22 slot? Normally, on a MY 83/84 L Jet, that should be a blank slot. What is the part # of your central electric board?

david_alford

What size fuse was in the #22 slot?
-- my owners manual says it should be 16a.

Normally, on a MY 83/84 L Jet, that should be a blank slot.
--yes thats the info I had, but here's what happened: When cleaning contacts recently, I pulled a 16a fuse out of #22, since 83-84 diagrams indicate its not used (I hadn't checked my owner manual yet). Then, car would not start. Since my car was produced early in the MY (11/82) I decided to check 928 Specialists fuse diagram for a '82. Sure enough 22 was used for fuel pump in '82. I then checked my owners manual and it also says 22 is assigned to fuel pump and uses 16a fuse.

To further complicate matters, the fuse diagram on 928 Intl says 22 is not used MY 82-84!

Since my owner manual incorrectly says 16a fuse for #19 headlight motor and that should be a 25a, is it also incorrect on 16a fuse for fuel pump? Should I have a 25a for that too?

I will get part number of panel now and post shortly...

Thanks

david_alford

CE board 928.610.105.06

david_alford

Pics showing CE panel part # on my '83, the entire CE panel, and the fuse assignment page from my owners manual....

Kiln_Red

My part number is only slightly different on my '84. It ends in 07 rather than 06. The only info I can find suggests that only early '83 US/Japan cars used that CE board. The only thing that makes sense to me is your assertion that they were putting extra parts to use. I learned something new today!

david_alford

Thanks Austin, I wish I had checked the owner manual a bit sooner. I have a long way to go in learning the intricacies of my car!

Alan

Since I've been doing a bit of detective work here recently on the panels:

It seems to me that Porsche decided in 1983 that their previous fuse rating for the fuel pumps was too generous and arbitrarily decided to reduce it - (regardless of single/dual-pump implementations) from 25A ->16A and then on the later panels with ATC fuses down again to 15A.

The headlight motor fuse is shown in 1983 as 25A in the wiring diagrams as it had always been before - but in 1984 and all later (same motor initially) they also arbitraily reduced this fuse to 16A and then on later panels reduced it again to 15A. It seems from this post above that they actually reduced the installed fuse to 16A starting in 1983, along with the car documentation (all except the wiring diagrams). In either case (and for any year) it seems that 16A / 15A is enough. There must have been some exercise before this change of rationalizing the previously installed fuse values that led to this...

Also - and more importantly - we may actually now need two different diagrams for 1983 cars since these cars were equipped with two different & incompatible CE panels - apparently this is (from Porsche documentation) based on Manual or Auto and regions (USA/ROW). It would seem there are USA cars in 1993 with fuses in different places - hopefully at least the original owners manual & CE panel card details are self-correct for those cars.

928.610.105.05 1982 USA, 1983 USA Manual
928.610.105.06 1982-1983 ROW, 1983 USA Auto

Porsche created a mess here - can't understand why they did this and then didn't correctly identify this on the diagrams.

This would mean:

USA 1983 manual transmission cars should use the 1982 diagrams
USA 1983 auto transmission cars should use the 1983 diagrams
ROW 1982 & 1983 cars should use the 1983 diagrams

Can any of you confirm this - I have had various reports of this anomaly over time (of which this thread is one) (and this is another)

Items to check: panel ID - embossed on the face @ the top

Do you have fuse 22 or 13 populated for the Fuel Pump? (one should be empty and one used)

Is your fuel pump & HL motor fuse equipped with 25A or 16A?

Alan

Barry Chan

I know for sure for the 84 us #13 fuse is fuel pump, aux airvalve, wur but the owner manual says empty

Alan

There is certainly a difference between panels for 1984 between USA and ROW.

Can you check the panel ID by the top mounting bolts..?
I'd expect it is a 928.610.105.07.

Did the owners manual come new with the car or is it possible it was purchased later as a replacement? Could then be the wrong type.

Alan

Mrmerlin

pictures of my 1985 Euro 5 speed CE panel as received from the PO.

NOTE I have not done any trouble shooting or alarm removal and there are more than a few other wires installed as well as all of the fuses are filled there should be a few empty slots.

I am just digging out from the snow so it may be a little while before I get into doing more work on the CE panel.
I covered the car in blankets then cardboard to prevent ice that was falling from the tree and possibly damaging the body.
since its been so cold here the whole mess was mostly frozen for 10 days

Alan

Stan that looks ugly cold (Brrr).

The '85 is radically different to the '84 of course. It seems there were some strange anomalies here in the 82-84 timeframe.

Alan