930 alternator issue

[quartetchiang]

Ok guys, did I do something that killed my alternator? My '89 Turbo has been having starting problems. Ignition at stage 2 nothing happens, at stage 3 the rear FP will work, but very loudly and would not stop (doesn't it suppose to stop after 1-2 secs.?) whereas the front FP is completely silent. I checked pin 30/87 of the relay socket of the front FP, and there was 12V coming through, so at stage 1 of ignition I jumper 30/87 of the front FP and the front FP functioned, so I left it on for 2 seconds to get some juice into the fuel line, and the car started right away. Afterwards however, the Alternator warning light illuminated and stayed on!! Did I fry something??
Incidentally, any diagnosis on my starting problem? No relay click under the driver's seat, as the previous owner apparently deleted the over speed rely.. Should I suspect Factory Alarm? Every time I retrieve the key from ignition the alarm chirps three times, regardless of the doors being locked or unlocked.

Will, if the alt. warning light came on out of other reasons, and was irrelevant of me jumping the FP relay, can I use this method as emergency saver?

Yours.

[T77911S]

ROW or USA
not sure about stage 2 or 3.
none of this should effect the alternator. you may have moved something that did not have a good connection that is related to the alt.

wow, where to start.

for the pump that runs all the time:
check the connector on the top rear of the air flow meter (AFM).
if it is not connected that is why the one pump runs all the time.
if it is connected, remove it and see if the other pump will also run all the time.
leave it off for now.

if one pump runs then the other should too.
check the relay and then check the socket for the one that does not run.
one of the contacts on the socket may need to be closed up some.

just to compare the 2 relay sockets, check for power on both sockets from pin 85 to 86.
if no power then check from pin 86 to chassis ground
with key ON and the connector on the rear of the AFM removed.
if you had power from pin 85 to 86 on both sockets, plug the connector back in on the rear of the AFM and repeat 85-86 test. you should NOT have power

if the rear pump is still running all the time remove the yellow relay in the engine bay on the relay panel. (don't know for sure if the 89 is yellow). check to see if it still runs

[JFairman]

This one is great. If you need 12 volts with no excuses or whatevers.. nothing else even comes close. It's built in a Valeo frame with bigger guts.
No core charge either.

Porsche 911 Alternator 1984 1989 High Amp 160 Amp High Output Generator | eBay