Xeros

Yeah so, almost got the entire motor back together a coupel more hours away from firing it up. Oddly enough though when I was adjusting my TPS I was getting some seriously high reading like 7.89 v at WOT....both wires showed very high voltage. I then curiously enough took one of my huge home made ground wires and tap the engine and the chasis and the closed throttle number fell by .15v....Now I know grounding is uber important in these cars...but I was wondering if the Powerfc spikes up voltage on the TPS a bit? Also oddly my Power FC shows volatge of 10 but I tested the battery and I got like 16v while the car was on the on position....So what could this mean? Is there a power wire touching the chasis somewhere or do I just need to do a ton grounding again?

BoostCrzy

you should have 13.5-14.5v at the battery with the car running.....16v is TOO high.....

Xeros

I know thats why I am confused...

JDawG707

diaods inside the alternator be out?

BoostCrzy

maybe the voltage regulator in the Alt. is taking a poop......

Xeros

Well the thing is i havent fired the car up yet....So I dont think its the alternator...this is just the key sittin in the on position while car isnt actually running.

scotty305

iTrader: (2)

Your battery shouldn't be 16V, even when the car is running. Double-check all your measurements.

If you're still seeing weird numbers, disconnect the battery and verify that all your ground wires are actually connected to ground (measure continuity or resistance with your meter). It's possible that one of your custom ground wires is connecting power directly to ground.



Another way to test this would be to measure the current (amperage) flowing through the battery's negative terminal. It should be pretty low (less than .01 A, from what I remember ) . If it's higher, then you've probably got a short somewhere. Most people have trouble measuring current. You'll have to disconnect the battery terminal, and put the meter in series to measure current. Make sure your multimeter's leads are connected to the right terminals, and it's set to DC Amps.

-s-

Xeros

I htink my volt meter is just off becasue my PFC shows 10v at the battery and if VTA 1 VTA 2 are the TPS wires that we test, then the PFC shows they are with in range...

mad_7tist

a 12v battery will not show 16v.
"custom ground wires is connecting power directly to ground." this would be a short and would discharge the battery and heat the wire to the point of melting it and starting a fire.

your meter is fubared.

and 10v is not a good battery voltage either

GoodfellaFD3S

iTrader: (213)

at 10v your battery is junk.

Xeros

Hahah at 10 volt my battery has been sitting in my car for year without being charged now and constantly being turned from the off to on position for testing. ell by the way I got the car to start up and saty on. No shorts no problems. One question though, my knock sensor doesn't seem to show at all on my PFC. The knock sensor hook sup to the engine harness that goes to the engine harness that leads straight back to the ECU right? Or does it hook up to the driver side harness?