dead ECU?

[Glliw]

So i was going through and double checking SAFCII wiring, and found two to be backwards. I fixed the problem and went to turn the car on. I forgot to plug the plug back into the ecu(i know, stupid) and the car would just crank. My idiot self realized this and plugged it back in. I proceeded to try to start it again and all i could get was one crank. Its real drawn out like...2 seconds long and every second or two it would crank again. What did I hurt?

 

[92awddsm]

Sounds like the battery is dead. Charge the battery and try it again.

 

[Glliw]

I was hoping it would be something simple like that, this battery has been known to give me crap before. I just don't have the money to get a good optima battery right now. I have to wait til somebody else gets home to be able to charge it though. In the meantime, any other ideas?

 

[Glliw]

Update: I'll just lay down some points here to help you guys help me.

It can be jumpstarted/push started

The battery voltage read from the SAFC stays between 13 and 13.8 when the engine is running.

A voltage of 8.9-9.2 from the SAFC when in the ON position.

If it is cranked, I get one long drawn out crank. Then a couple more after a few seconds in the same fashion.

When jumpstarted, it starts right up.

Even 30 seconds after being jumped, if I turn it off and try to crank again, the original long drawn out crank appears again.

I'm thinking dead battery, and going to pick up an optima tomorrow. Could a bad SAFC grounding cause this? I tapped the ground wire for the ecu with the brown first and black further away, so I can't see that being the problem. But its the only thing that I've done to the car recently. Then again, why would I have good battery voltage and not be able to start, but be able to jumpstart it?

 

[Glliw]

argh...come on guys, I really need help on this one. I suck with electrical gremlins.

 

[bluetlr2001]

Your battery may show good voltage but have a dead cell. take it out and take it to your local parts store and have them do a load test on it. also i thought my battery was shot and instead of testing it i went out and bought a new 1 and to my surprise my starter drug out even longer when starting and sometimes not starting. So i would also try taking off your starter (which is a pain) and blow it out. That fixed my starting problems for now.

 

[Glliw]

Ah crap, I've always dreaded the day that I would have to take that damn thing out. I will first try the battery way however. But how can the starter be the culprit when being jumpstarted, it starts just fine?

 

[bluetlr2001]

It puts more voltage to the starter. instead of 13volts it getting twice that. also make sure your wire is tight on your starter to. That is something else i found when i took my starter off. which dummy me shouldve checked first but went thru all the trouble of taking it off

 

[92awddsm]

If it is only putting out 8-9 volts when the car isnt running but 13-13.8 with it running, it is definately the battery or connections. It has nothing to do with the starter at all.

 

[91Bomb]

Update:
A voltage of 8.9-9.2 from the SAFC when in the ON position.

If it is cranked, I get one long drawn out crank. Then a couple more after a few seconds in the same fashion.

When jumpstarted, it starts right up.

Then again, why would I have good battery voltage and not be able to start, but be able to jumpstart it?

8.8-9.2 is not good voltage. It should read in the 12's when car is turned off. Def sounds like a bad battery.

 

[Glliw]

Yay for new optima battery! Thanks guys

 

[bluetlr2001]

My battery voltage with a brand new battery only shows 10-11 volts when the car isnt running bc you have voltage lost between the battery and the wires inside the car. but that is why i said to have the battery checked b4 messing with the starter

 

[bluetlr2001]

well guess i was to slow at typing but glad it was just your battery and not the starter.