new deck, speaker problems? also code 12

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Originally Posted by toyota83

hey, just got the girlfriend an 86.5 na 5 speed supra with no rust for $350 for x mas. steal of a deal its in real nice shape. this kid i got it from said it needed a new cd player, so i installed an alpine. the deck lit up but there was no noise from the speakers like the previous deck. is there an external amp somewhere?? my dads porsche 928 has one under the passenger seat. is this similar?

also, the yellow and blue power wire has no power, i ran a temporary jumper from cig lighter plug.

No, no external amp in any pre89 MKIII.

Check the 20A Radio #1 and 7.5A Radio #2 fuses, I believe it's the #1 (engine bay fuse box) that would be the problem.

Originally Posted by toyota83

i jumperd the diag. port and believe i have code 12. the car sometimes accelerates a little rough. not too bad. only under light accel. idles fine, heavy accel fine. just plugs and wires? i hear you have to remove the intake manifold to get those 2 plugs out, which would lead me to believe they have been in there for quite some time.

Replacing plugs is easier than it may seem.

Code 12 is set due to either lack of sufficient signal from the CPS (GE and GTE alike), a bad ECU or no starter signal... this code can be set if the car is push started. Start with checking the wire harness to the CPS/Distributor first.

Originally Posted by toyota83

fog lights... is there a trick to turn them on? switch doesnt do anything. have not checked bulbs or fuses.

Per DOT regulations they will only operate while the low beam headlights are in operation. They may not be operated separate of the low beams.... so, they won't come on when the hi beams are on, nor will they come on while the parking/marker lights are on, nor will they come on while all other lights are off.

Start with checking the fuse, then check the bulbs, then check the relay... easy things first.

Originally Posted by toyota83

final question... upper control arm/balljoint. NAPA doesnt have them, partscity says they can "special order" them and they are over $200. any good sources? online or minneapolis area. not really looking for aftermarket performance ones. its not a f'ing race car...

Sadly, the ball joints are not separately replaceable.... thus the high price. I don't think I've ever found them for much cheaper, maybe as low as $180, but it has been a very long time. I'd just keep asking around. If you, or anyone else, find a less expensive replacement please post it.