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Engine idles low after intake install

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Old 04-08-2012, 11:26 AM
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Default Engine idles low after intake install

Just installed a bbk intake on my ta. First startup it idles around 500 and will die if I cut the ac on if I unplug my mass airflow it runs fine is it my mass airflow?
Old 04-08-2012, 11:58 AM
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The first 2 simple things i would do is try a TPS reset (unplug tps, turn key to on position 30 seconds, turn key off, plug in tps, then start car again) and the second thing i would do is check for a vacuum leak, you say it dies when you put a load on the car turning the a/c on. did you move the MAF closer to the TB? if its too close its going to jack up your reading
Old 04-08-2012, 12:09 PM
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Maf is in the same spot as stock I'll try the tps reset in a few minutes
Old 04-08-2012, 12:16 PM
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This same thing happened when I installed my SLP lid on my '01 Z28. The engine would idle really low and try to die, I had to rev it up a few times to keep it from dying. I shut it off and started it back up again, same thing happened. But this time I took it out for a test drive, got it up to WOT a few times. I shut it off again and turned it on, then it was normal.

I'm pretty sure it's just the PCM relearning the new air intake, takes it a few miles of being driven to adjust. Hope this helps.

BTW, see your in Vicksburg, opposite side of the state, been through there a few times.
Old 04-08-2012, 02:06 PM
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Yeah white knight In Vicksburg where are you at meridian?
Old 04-08-2012, 03:43 PM
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Meridian's not a big town, but I'm sure you already knew that, and neither is Vicksburg. Not many places to live, but I live right outside the city on the north side.
Old 04-08-2012, 03:59 PM
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My mom is the general manager at Bonita lakes mall. I was actually over their Friday for a few hours
Old 04-08-2012, 04:09 PM
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General manager!? Far out, that's a sweet deal. I go to the mall plenty, only decent place for shopping around here.
Old 04-08-2012, 06:09 PM
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After I've put some miles on it it is running better thanks for the help guys
Old 04-08-2012, 09:27 PM
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Originally Posted by WS600461
After I've put some miles on it it is running better thanks for the help guys
Yup, sounds like the PCM just needed a re-learn. After about 100 miles you'll forget about it completely, car will feel completely normal, and maybe just a tad faster.
Old 04-17-2012, 01:56 PM
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well it seems my problems have come back. car idles like **** till it warms up then its fine ive done everything i can think of besides pulling the intake back off do you think its my tune since im still running a stock tune?
Old 04-17-2012, 07:40 PM
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I would think it probably does need a little idle tuning to make it right. You say that it idles fine once it warms up? That probably means that closed loop operation is fixing the problem, once the O2 sensors are kicking in. Your data tables that control the engine in open loop may need tweaked. I do my own tuning, and I would tweak it a little, add a little more idle air flow, and see how that works. The only way to know for sure what is going on is to data log the car, it is still possible it could be a vacuum leak too.
Old 04-17-2012, 10:06 PM
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There is no way you need to tune you car for just an intake. It's definitely not the PCM. Maybe clean out the MAF, make sure the TB is clean, but it doesn't need a tune, almost positive of that.
Old 04-18-2012, 11:27 AM
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Throttle body Maf and iac valve are clean. I've done just about everything I can think of and still no luck
Old 04-18-2012, 12:51 PM
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Do you still have the old stock airbox? Might want to try throwing that back on and see if the problem continues.

Is the engine throwing any codes?

By idling like ****, what do you mean? Does it idle really low and try to die?
Old 04-18-2012, 02:23 PM
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Check your throttle body gasket. The BBK intakes come with a gasket that is missing a hole for the IAC. Simply cut a hole in the gasket where the IAC opening is on the intake and more than likely your problem will be solved.
Old 04-18-2012, 06:51 PM
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i havent checked the gasket will do that in a few minutes.
Old 04-19-2012, 09:02 AM
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Originally Posted by WS600461
i havent checked the gasket will do that in a few minutes.
Any new news?
Old 04-19-2012, 05:52 PM
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that was the problem now its a little slow coming down to idle but other then that all is well
Old 04-19-2012, 07:21 PM
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Originally Posted by WS600461
that was the problem now its a little slow coming down to idle but other then that all is well
Glad I could help!



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