whens voltage to low?

[PorkChopExpress]

my car pops and skips at wot above 4k. doing a log of a run i noticed my voltage dropping to the high 10s. this normal or a possible reason for my problem?

[Joe]

thats very low

[PorkChopExpress]

i have a loose yellow with green strip wire next to the alternator, noticed it months ago, so i assumed it went with something i got rid of.

will snap a pic first sun.

[ddjernes]

10's is way too low. You should be above 12.6 at all times exept for when starting the car. Typically you should be in the range of 13 - 14.6 volts when the car is running. It sounds like your alternator is dead or you have something wired up wrong so its not charging.

[PorkChopExpress]

a log of wot from 3k to 6k in 3rd gear. over the course of 10 sec(ya, its a turd) im gonna try a new alternator, also, another fun fact, the tps can not work at all and the computer will not throw codes.

12121211.811.811.812.112.112.111.811.811.812.212.212.212.211.711.71212121211.511.511.611.611.611.611.511.511.511.411.411.411.511.511.511.211.211.210.610.610.610.611.411.411.411.311.311.311.411.411.411.511.511.511.511111110.810.810.811.411.411.411111111.311.311.311.111.111.110.910.910.911.111.111.111.311.311.313.713.713.713.712121212.512.512.512.212.212.2

[Joe]

dude if youre below 12.4 at ALL something is seriously wrong.

[Darius]

Is this an S13 or S14? And does the battery light turn on in the gauge cluster? Either the alternator is not keeping up or the regulator is not functioning properly.

Anything below 13.8 and it is getting too low especially in the high load cells of the fuel map. The lower the voltage, the less the fuel pump pumps. This could cause the engine to lean out and knock itself apart. No good.

The popping could be from the coil packs not receiving enough power to ignite the cylinders so it misses and the fuel/air ignite in the exhaust.

Take the alternator off and have it tested at O'Reilly's or whereever.

[moso240]

Subscribed...im also having WOT problems that seemed to improve when i swapped altenators...let know know what you find..

[PorkChopExpress]

will be testing/replacing alternator. the battery light doesnt kick on. its a s14.

my tps was reading .04 at wot to. thats fixed.

[Darius]

Yep that's a problem too. TPS should be 4.0V at WOT.