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Old 05-11-2012, 07:01 PM   #1
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Default 99 DIYPNP - Starting Failure

I'm trying to get my car to start with my DIYPNP; I've calibrated all the sensors and gotten all the connections sorted out properly, but I can't figure out why the motor isn't cranking.
The starter isn't turning and the coils aren't firing. The fuel pump is working (I can hear it when I turn the key to the on position).

I attached the tune that's currently loaded and a log of when I try to start it a few times.

I probably overlooked something getting everything set up, but if someone could take a look at those and let me know if they see something I could fix, that would be awesome
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File Type: msq CurrentTune.msq (80.0 KB, 56 views)
File Type: msl 2012-05-11_16.31.48.msl (58.5 KB, 44 views)
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Old 05-11-2012, 07:35 PM   #2
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Sounds like your starter? If it's not turning over I don't think it would have anything to do with the ECU. If the motor isn't turning the coils won't fire. Have you had the starter out or disconnected since the last time the car ran?
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Old 05-11-2012, 07:40 PM   #3
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I parked the car 4 days ago, and the last time I ran the car on the stock ECU, everything was working completely normal.
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Old 05-11-2012, 08:15 PM   #4
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Ms has nothing to do with starter... this is a reverant built unit right?
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Old 05-11-2012, 08:22 PM   #5
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Yes, its one of the enhanced DIYPNP units from the group buy.
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Old 05-11-2012, 09:10 PM   #6
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The starter is driven directly by the ignition switch. There is *NO* ECU control of the starter motor. You need to look at things like battery, clutch safety switch, ignition switch, starter solenoid, and associated wiring.
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Old 05-11-2012, 10:28 PM   #7
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One of the wiring harness connections wasn't completely connected, so I'm fairly certain that was the reason behind the motor not cranking.

So...I got the motor to crank, but it just wouldn't turn over completely. I ran a log of the motor cranking, if anyone wants to take a look, I'm not really sure what I should be looking for at this point as to what needs adjustment in order for it to hold a steady idle.
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File Type: msl 2012-05-11_20.06.25.msl (105.6 KB, 45 views)
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Old 05-13-2012, 10:08 PM   #8
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What's going on in the log you posted? From the looks of the log, you cranked the car and got it running, then had to keep revving it to keep it running before it died?

I'm probably the last guy you want to take advise from, but if it was me, I'd back the idle screw on the throttle body off a few turns and see if you can give the motor enough air that it will at least hold an idle. Do you have a wideband set up on it? What wideband? Maybe it's just my default settings (AEM wideband) but it looks terribly rich. If that's the case you may want to bring down the Req Fuel settings in Megatune to lean it out a bit.
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