I don't drive my car often, and i have an alarm. So the battery is draining a lot. I have a battery charger so i just up it with the charger and drive it where i want to go, when i get there it starts fine and holds charge for a few days. Yesterday i jumped it and it wouldn't hold an idle, it would go down to like 400 rpm and die. I have a Uni from datamaster if you want to check it out. The voltage never goes over 12.6 and when the rpm's drop the voltage goes down to 10.3.

It was running fine before now it is acting up. Something i realized is that i ran it for about a minute at 200amps on the charger. If i fried something it would stop at the alternator right? Could this jack up the battery?

 

The battery actually drew 200amps from the charger?
If so It's probably bad.

A normal battery will only draw like 40amps during a heavy charge.

Easiest way to test it is just throw in a known good battery from another car.

 

i pulled the battery and had it tested at autozone as well as shucks, tested good, but low charge. I also took off the alt. and had it tested at both, tested good. I then charged the battery to 13.2 and put everything back on the car. Tried to start it and same thing. Any idea's where to go with this? datamaster didn't throw any red flags up to me, but i'm new to datamaster so it could be my untrained eye.

 

E-mail me the .uni file. In the subject, show your screen name and the fact that its a Datamaster file.

 

problem solved thanks for the help guys

 

Um, so what was it ? Inquiring minds want to know.

 

I guess I don't need to open the file......

 

Not any more, i figured it out after i sent the file. Thank you for your time though.

 

I was hoping no one would ask. I've been playing with cars for several years now... built my engine with a friend. I've always thought i was pretty good with cars....

Apparently i'm an idiot. It ran fine going around the block, like i said in the 1st post. My driveway is an incline. i pulled up it when i was done changing the oil and then just wouldn't idle. Almost like.....IT WAS OUT OF GAS

 

I've had goofy crap happen too On my '96 Z28 after an oil change done on drive on ramps, I had oil coming out of the trans flex plate cover. What ?!? kinda like your fuel and angle thing, a small amount of oil leaked back when the oil filter was removed and for a short time it looked like the rear main seal had let go or something. Wrench and learn.

 

The file indicated major problems..... no vacuum (MAP over 80kPa) and the injector pulse widths at idle were 15-20mSec. The left O2 sensor was completely dead. Doesn't look like the file from an engine running out of gas.

 

My car has some major issues, i've been trying to track stuff down. It goes nuts when it goes into closed loop. So i've been running it with the o2's unplugged the past few weeks. This is the reason the 02's are messed up. i do have a cc306 could that have something to do with the vacuum?

I have a datamaster file with the 02's hooked up, but it was from a while ago. Care to look at it? If it would be more helpful i could make a new file tomorrow with the 02's hooked up and it would be more current. Any help you could give would be greatly appreciated.

 

When I 'saved' the current file, I already had a file from you from a while back, and had commented on it.

 

Yeah i remember that, it was like a year ago. After your post back then i later found a burnt spark plug wire and assumed that was the problem. So the file you have is from back then. So on top of all the problems i have now, spark plug wire 7 was also burnt up in that file.