texas outlaw

my car started turning off the other day, but would turn right back on and motor wise is running fine meaning its not stumbling or misfiring when it turns off it justs turns off like if i'd turn the key backwards or something. so i checked the basics fuel pressure, and spark but everything was good, wanted to check for codes but dont have a scanner. But then yesterday went to go work on it and it turned on for about 6 seconds and then turned off and then did not want to turn back on????

HarleyZ28

iTrader: (2)

Is your battery cables loose?

texas outlaw

that was the first thing i checked and they were ok and i had just put a new battery in, so then i thought the alternator was going out so i replaced that and it did the same thing, i replaced it because when i would turn on my lights, and a/c my voltage would drop really low maybe to about 10 volts or less into the red part whatever voltage that is

HarleyZ28

iTrader: (2)

When the car turns off and doesn't want to turn back on, when you try to turn it back on does it make a click sound and then nothing happens?

Also, since you replaced the alternator, now when you turn the light on and a/c does the voltage still drop low?

texas outlaw

no it cranks, and i really didnt get the chance to check the voltage hasn't really stayed running long enough for me to check

Noah's95z28

iTrader: (7)

Vats??

texas outlaw

sorry but what are vats?????

Noah's95z28

iTrader: (7)

vehicle anti theft system. Usually the security light comes on though.

DisasterFormula

iTrader: (1)

When does it turn off? Like are you driving around when it dies, hard acceleration, braking, idling, etc. Details! lol

texas outlaw

at first it was just turning off once or twice a week did that for like two weeks, then on the third week i started it to go from work and noticed it running really ruff for about a minute which has never happened, got half way to my house it turned off had problems starting it but it started and i got it home. i let it sit for a whole day went back the next day and it started, but it would just turn off whenever at a stop sign, parked out side my house, driving it down the road like at 3000 rpms!!!! if its the first crank of the day it will start, but after that it will just crank

tricked94camaro

iTrader: (1)

my first thought

DisasterFormula

iTrader: (1)

It isn't vats. If it was VATS, fuel pump wouldn't prime and the engine wouldn't crank. Probably Opti, but before you jump to any repairs, I'd check ohms on the ECT, check the ICM, Coil, and check for voltage and grounds on the ICM and OPTI connectors, plugs and wires. Spark and fuel. If you can smell fuel when you crank, probably no spark.

crispytoast

iTrader: (17)

maybe plugged up cats?

DisasterFormula

iTrader: (1)

Clogged cats would be more a loss of power, wouldn't start at all after a while.

TimmyZ28

Try getting it to run long enough to see how much voltage drop you have on the batter. If it is dropping low still, check the signal wire going into the alternator to see if you have a full connection. I had it where it would intermittently charge so I started to wiggle wires and I shook the signal wire and I was able to see the meter go from 9-10 volts back up to 13-14 volts and vice versa. Also, check your grounds on the head, battery, body, everywhere. Loose grounds can give headaches!