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Brief RPM dive when stopped.

I took my car up to Advanced Auto and had them test the battery. The battery has 313 cold cranking amps per what his machine said. I did a quick

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Old 04-17-2014, 04:44 PM   #16 (permalink)
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I took my car up to Advanced Auto and had them test the battery. The battery has 313 cold cranking amps per what his machine said. I did a quick google search and the battery should be at 650.

Earlier today the temp was about 32 -35 degrees. It's now 65 degrees and the car is no longer dropping off time to time.

Maybe it's time for a new lightweight battery?

.... just remembered something.... I should check the water level in the battery.... bbiab
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Old 04-17-2014, 05:06 PM   #17 (permalink)
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So.............. The water level was really low. I'll let that marinate for a day or so and check back.

I'll also clean the TB's next week.
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Old 04-17-2014, 05:29 PM   #18 (permalink)
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My battery is brand new, and worse comes to worse I have an even newer OEM battery
No tune either.


I'll try the TB thing this weekend. Can I drench the TBs in cleaner?
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Old 04-17-2014, 06:11 PM   #19 (permalink)
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I'll check with my brother to see how the TB's should be cleaned and let you know. My bro is a master mechanic with 20+ years exp.
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Old 04-17-2014, 06:12 PM   #20 (permalink)
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I'll check with my brother to see how the TB's should be cleaned and let you know. My bro is a master mechanic with 20+ years exp.
I know the ideal "book" way, but if I cna disassemble them enough and just sonicate them in something. I'd rather do that.


Don't know how much I need to take off though.
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Old 04-17-2014, 07:59 PM   #21 (permalink)
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I know the ideal "book" way, but if I cna disassemble them enough and just sonicate them in something. I'd rather do that.


Don't know how much I need to take off though.
i just used a micro fiber and some general cleaning solution. you'll see how dirty they are. just need to remove the intake tubing, or get it out of the way-pretty easy diy.



did this a ways back. it was always in drive at idle accompanied by a voltage drop. problem solved.
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Old 04-17-2014, 08:07 PM   #22 (permalink)
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I just got back from my brother's place and talked to him about it. He said it's probably dirty TB's. He pretty much repeated verbatim what Critical said.

1.)Take the TB's off
2.) Spray a micro fiber rag with TB cleaner
3.) Wipe it clean.
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Old 04-17-2014, 09:11 PM   #23 (permalink)
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It's still gonna vibrate like a mother with an auto though... ;-(
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Old 04-18-2014, 12:06 AM   #24 (permalink)
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I don't give two sh!ts about the vibrations. I just don't want my charging system to be strained.
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Old 04-18-2014, 12:16 AM   #25 (permalink)
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pull them off and clean them with maf cleaner/electrical cleaner

The spraying power from the can should be enough to blast any grim off with ease. no need to scrub or marinate anything
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Old 04-18-2014, 01:31 AM   #26 (permalink)
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It's quite possibly the battery.

Failing that search for an intermittent vacuum leak -- the unmetered air will cause you to skew lean at idle; ECU will compensate with high positive fuel trim, run rich, and dip a bit as it attempts to work around the leak.

So much of the throttle on this car is done with VVEL, I doubt cleaning the TB's will fix. Probably not it.
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Old 12-01-2014, 05:59 AM   #27 (permalink)
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I have that same problem then it started to turn on the oil light at the same time and then about 2 sec goes back to normal yesterday i bought a battery thinking it was it and nope it continue to do it. But the oil light did it when i changed my oil and theres no leaks i checked the dip and it was fine. I am loosing my mind help people!!!
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Old 12-01-2014, 03:42 PM   #28 (permalink)
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I have that same problem then it started to turn on the oil light at the same time and then about 2 sec goes back to normal yesterday i bought a battery thinking it was it and nope it continue to do it. But the oil light did it when i changed my oil and theres no leaks i checked the dip and it was fine. I am loosing my mind help people!!!
Your ECU might be losing its mind... I'd check to see if have a bad oil pressure sensor if you aren't burning oil or actually losing pressure somewhere in the system... That might require a trip to the stealership and use of CONSULT III.

On that note: Do you have an oil cooler, either OEM or aftermarket?
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Old 12-01-2014, 05:05 PM   #29 (permalink)
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While Jordo!'s bad sensor diagnosis has a good chance of being correct, I'd try powering down the ECM first. It's easy to do - remove battery cable and step on brake pedal for a few seconds, then reconnect battery. The car may run rough for a bit while the ECM relearns the engine and you'll have to reset the windows (procedure has been given many times; use search). You may also lose the radio presets.
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Old 12-04-2014, 02:45 PM   #30 (permalink)
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The battery was the issue in my case... if anyone was wondering.
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