Hey whasts up. I posted on on another thing on how my car wouldnt start



Broke ALternator belt, so that lead to a tool kit all new good years belts a optima battery , new battery terminals, new NGK plugs and wires etc. A $5.29 job turned into $320.00 but my car was fine. But ive been noticing a weird idle. Very rough and idles lower than 750 RPM.. i Put a new battery and the voltage fluctuates between 14 and 11. Like eratic surges or what ever. But i know it aint the battery sinces the car only needs 320 amp my battery has 910. I think it could be my alternator. But sometimes it runs fine at 14 volts day and night and sometimes its a 12 or 13.



If it is my alternator can i put a s5 alternator which has 80 amps comapared to a s4 which has 70 amps. ?? Will i blow all my lights lol.. I work at autozone and i checked the alternator they got in stock and it looks like the one in my car. It has a lifetime warranty but u will be changing it every 6 months lol. if any recomendations on alternator with good warranties.



thank you , Jason R https://www.nopistons.com/forums/pub...1047683329.gif

might be flooded. Something about the oil seals or something. I know it not starting up cuz it floods, or hell the fuel pump seems to go on this car too. The experts can help you out over here. But I read flooding, and fuel pump as two culprits.

nah check it . I already unflooded it..Thats why my car wouldnt start but i thought it was my battery so i bout a new one . When i was in the process of unflodding i saw how the plugs looked and i was like i might as well change em. I think its my alternator. Just want to know if i can put a s5 alt into an s4 safely without injuring my baby 7

Didn't you just get a new alternator? The low idle could be causing the alternator to spin too slowly. I had that problem with the RB underdrive pulley. Also, did you replace the fuel filter when you did your tune up? That can cause a crappy idle. Also check your TPS.

low voltage can do wierd things like that too. i would check all of the connextions first, there are 2 on the fuse block under the hood, and then the b+ on the alternator. make sure they are clean and tight



mike

The S4 alt and the S5 alt have different connections in the back and I'm almost positive its not a direct fit..with some clipping and rewiring the connectors, an S5 alt should work...





about the UD alt pulley...I had one on my S4 a while ago and I never saw a problem with volts....weird https://www.nopistons.com/forums/pub...IR#>/wacko.png

My job sells the alternator. ANd you can tell no one has bought it cause the box has a lot of dust on it. But if anything if it is my alternator i will get it then..... But how can i make sure its the alternator and not loose or damaged wires. how can i check since i dont know too much bout the electrical system https://www.nopistons.com/forums/pub...1047683329.gif

shitty ground............?

yah u love to **** on the ground so ive heard.

https://www.nopistons.com/forums/pub...1047683561.gif so what is it persay. I dunno that much so can you guys be a little more specific

I was referring to the RB eccentric UD pulley.



Have your work test your alternator. Some places have you pull out the alternator to test it.

I PUT A MACHINE I dunno whats its called. YOu connect it to the battery and u put a load on the batery and alternator for like 10 seconds and the voltage goes down but mines went down from 14 to 12 volts and it said my chargin system was ok. But i want to know is why it fluctuages is there a short somewhere. My radio somtimes even with the car off turns on and off as if it was a turn signal light. I dontknow what it is

Jay, if you think your alt is bad, why dont you just try putting an S4 one in? Forget splicing an S5. I got the lifetime warranty Autozone S4 alt a year ago and the thing is fine. If it doesnt change anything, put it back in the box on the shelf.

Dude, i am having the same Freaking problem with my car right now...



She will not hold a charge. and i've even got a brand new battery/altenator/regrounding kit/batt teminals/everything i could possibly thing off. Took it to discount and had them test it. said my charging system was out standing.. Went inside for a little bit (10-15 Min) came back out and the batt was dead.



I have no idea what is wrong with my car, i even took her to my mechanic (mazsport, LARGO) and scott can't even figure it out. It's really gotten to the point that it's pissing me off, and i dont know what to do about it.

IGHT IMA GOING TO HOLD OUT ON THE ALTERNATOR FOR A WHILE CAUSE I HAVE TO PAY SOME BILLZ FIRST, THE CAR IS HOLDING UP IM JUST WORRIED SINCE I JUST FIXED MY CAR AND ITS ACTING UP JUST WANT TO MAKE SURE IM NOT GOING TO BE LEFT STRANDED SOMEWHERE . wHERE ARE YOU GUYS FROM

relisys190 AND FCmaniac ??



Thanks For the Help, if anything ill get the alternator from my autozone and ill get my discount. But i wont give them the core right away just in case theres doesnt help i can still but back the original



FC... how many times have you gone back to return the alternator. How long have you had it.







Thanks alot, Jason R, nyc

I've had it for a year and never returned it, its fine.

iight thanks man. SO ima just get it when i have the money but im not gonna return the core just in case the problem still persists. But thanks for the help man



https://www.nopistons.com/forums/pub...IR#>/bigok.gif

headlight motors jammed............

radio maybe?



Do you people know how to check your car for open shorts??



Disconnect the postive battery terminal.

Reconnect it for about 5 seconds to reset the relays.

Disconnect it again and take a test light and connect one end to the disconnected battery cable and touch the other end to the positive side

of the battery ( which of course has nothing else connected to it at this point)



If your test light lights up, you have a open short somewhere.

Now comes the fun part, pull out fuses one by one until the test

light goes out, when it goes out you have the culprit of your short.

be sure to do the fuses one at a time so you dont forget which ones go where, and to keep the door light from going on as well becuase that will

signal a false short.



If all else fails take your car to a pro, stop thinking they are so exotic and let a pro work on the car. A electrical system is a electrical system, a Mazda is no different then any other car in finding a short.