2503 is what I threw after the alternator crapped out.

 

APV stuck open
Charging system voltage low
reset and they have not come back in one drive cycle

did the same nuetrino just hit me that hit pdxhak's alt?

 

Let's hope not. Some of the failed alternator threads are not good.

 

alternator is the only mechanical issue i've had in 60K. i havent paid attention, but i dont know what would be a nuace about it. old on comes out, new one goes in. plenty easy to do.

 

read up on some of the failures and the damage it has caused. all kinds of crap can get fried and cost a couple of thousand in repairs.

 

not interested TBO, but sucks for those folks

 

a mechanical failure of the alternator won't damage much. you're car will stall out because there will be no power/current to keep the the car running.

an electrical failure of the alternator is different and the mishaps of too much current, and power and ground interacting can do some damage.

 

So, I have a symptom of a failing alt? I surely do not need a failure right about now. Resolving the noise issue currently, it is either the water pump or the alt. Now that I threw those two codes, maybe I need to buy that upgraded alt


can't find the meter...
test it Sat

 

yeah what Ngo said

 

keep a close eye on your battery voltage, via the AP.

if it starts dropping, not good. idle voltage should be in the 14s on stock pulleys. jedi had a mishap with that CEL a few years ago and as well as a clicking noise. though his alternator failed completely that same night.

as for the noise, try taking off the belt and turning the alternator and water pump by hand. probably won't get much kinetic spin on the water pump, but should be decent on the alternator to let you know if the noise is coming from it.

 

That is part of the problem - they both seem smooth to me. Replacing one at a time.

 

yeah, that was NOT a fun night. https://www.rx8club.com/series-i-trouble-shooting-95/p2503-think-my-alternator-dead-162635/

 

wow - glad nothing major shorted out.

No cels so far after the reset.

I tightened the main wire nut, got in an monitored the volts with the AP. Had good readings on my commute to work. So, maybe I just had a fluke? Throwing a cel is not something to just wish would go away. There was a reason it threw those. Why the P2004? Getting to that APV motor sucks.

should have the new water pump shortly. Then it is finish the gauges, and play around once again with the exhaust... lolz Finally, I will hook up with dannobre up North at Carb Conn in January for a dynojet dyno with some changes in place.

 

Another dyno day?!

 

yep - I'm going to mess with my exhaust a bit, then make a logged run in each gear to redline on the dynojet at Carb Conn. Going to create a six gear chart.

 

Sounds interesting! Will Dan be doing pulls on his car as well?

 

Yes - that's the plan. He needs to get that car running again!!

 

what day? i want a dynojet dyno after i fix the bypass valve issue.

 

^haha I knew you would be thinking the same as me

 

http://www.carbconn.com/
i have a baseline dyno there
need 5 for a group discount

 

An alternator is the only major item i have fail (if you don't count motor mount and coils).

Got a dash light that looks a battery. The Optima got me to the dealer but coughed up blood after that. I got a new battery on exchange.

I don't recall what the code was.

 

i'm down. when are you thinking?

 

I'm in if date and time work out for my schedule.

 

How much are the pulls with the discount?

 

is the noise still there?

my mazmart pump has about 10k miles on it..

btw, i am getting caught up. if i misspoke i am sorry.

beers