no_luck

iTrader: (3)

ok... so i have to batteries (temp) in my rx7 and today i messed up and hooked up the batteries correctly... i connected them +-+-.. so i had a 24 volt connection.
started the car up... reved up and shut off.. then i tried it again 2-3 times and then i quit and sat there thinking of what it could be .... while i was doing that my logicon started smoking. i quickly unplugged the quick disconnect.. corrected the wiring to ++-- . started the car and let it sit for a while it warmed up and i revved it up to like 4k. do you think im going to run into some sort of problems

no_luck

iTrader: (3)

oh and on top of that befor i messed up with that install... my soft top fuse keeps blowing as soon as i connect the fuse and my rear defroster lite stays on and it doesnt work ethier it used to work and i stop driving the car for a while... one day i go to start it and it the top wont work and my rear defrost wont work

zeromage428

why do you have 2 batteries?

jjwalker

It doubles the current capacity of the battery.

zeromage428

for what though? are you running more than enough of electronics?

Spirit-RE

iTrader: (25)

24 volts eh?


Yeah you f*cked some **** up. ECU can fry at anything above 15v, along with many of the other electronics in the car(like the logicon).

no_luck

iTrader: (3)

well for me ... its because i have a huge voltage drop and a parasitic loss..
so with two batteries there is no voltage drop.well its significantly less and this will have to do till i get into my electrical class this week and fix the problem.
others use it for system (AUDIO) umm basically for cars that have a heavy electric load on the vechical.

no_luck

iTrader: (3)

but if the car turned on and idled and i revved it up to 4-5 or wat ever ... is the ecu ok? im just worried about getting stuck on the highway tommerow.

lastphaseofthis

iTrader: (8)

sounds like the ecu maybe fine, but Theres nothing you can do, except replace it when it does die.

no_luck

iTrader: (3)

damn!... well ok hopefully the rotor god is watching out for me cause i really dont wanna get stuck on the high way tommerow

texFCturboII

iTrader: (17)

Id take a test drive around the neighborhood before getting stuck on the highway.

zeromage428

i would try to fix the problem that is causing the voltage drop and loss before doing a band-aid job like adding a 2nd battery. Id be scared of like in your case...an electrical fire.

and yeh...test drive it around for a good minute before taking it on the highway or major roads.

Nick_d_TII

iTrader: (6)

Lay off the meth and fix the problem.

http://www.aa1car.com/library/battery_runs_down.htm

calpatriot

If you are worried about the ECU (I would be, after feeding it 24v), check to see if it is giving you the normal lights indication on initial power up. If yours is an S4, you have no check engine light, so you need to make the two-LED code checker (google "check 86-88 RX7 trouble codes"). Both LEDs should come on for about 3 sec after turning the power on (key to run, not start).

If they do, the ECU is at least still talking. If that worked, I would check for codes. If none, I would induce a code condition by disconnecting the appropriate sensor (i.e. O2 sensor) and seeing that the ECU reports the right code. If that works, its not only talking, but thinking.

Finally, I would do the 'closed loop operation' check. That would verify that the ECU is successfuly controlling the mixture during cruise.

If you really want to be sure, get down to the ECU connectors, and backprobe each pin with a voltmeter. Do this with the ignition on but not running, and then again at idle after warm up. compare the voltages with those published in the table in the online FSM.

If you fried a sensor, it should show up as a voltage out of specifications.

no_luck

iTrader: (3)

lay off the meth? wtf ..?
i said i will fix the problem in this class... the only reason why i added a second battery is to make sure i dont get stuck till the problem gets fixed.. i have a 30 person class and two lifts in a hanger that fits 4 cars.. calm down.
anyway i got to school and drove around for a while and she started up and everything. she also running rich. (exhaust leak<getting fixed tomorrow >)... i dont know how to test for a parasitic loss so..... thats why im waiting for class tomorrow anywho.