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Please Help, with Idle issues?
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Melting Slicks
Joined: Sep 2007
Posts: 2,138
Likes: 139
From: Port St Lucie Florida
Please Help, with Idle issues?
I cleaned MAF which was dirty, put on new LS2 style TB, which helped some, but while driving the car it wants to stay at 1500 rpms while cruising. I have to make a complete stop for around 20 seconds for the Idle to come back down below 1000 rpms, then when I drive after that it seems to be OK. Any one know what this could be? Its very frustrating. Any help needed thanks.
Could it be the fast intake manifold? but where?
Could it be the fast intake manifold? but where?
Last edited by corvet786c; Feb 15, 2015 at 05:44 PM.
Le Mans Master
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From: Columbia SC
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Verdad Gallardo
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He had worse problems when he had the previous TB on per his thread in the tuning section.
You've got a non-stock throttle body and intake manifold. There's a good chance you've affected the airflow around the MAF and hence affected what its readings are at idle if not elsewhere as well. You need to get the idle airflow values changed in your computer's tune. What's happening is that the correction to get your idle speed down is more than the idle trims can save between ignition cycles. The computer adjusts during your 20 second idle interval but then when you go to restart it has to basically do another relearn.
You've got a non-stock throttle body and intake manifold. There's a good chance you've affected the airflow around the MAF and hence affected what its readings are at idle if not elsewhere as well. You need to get the idle airflow values changed in your computer's tune. What's happening is that the correction to get your idle speed down is more than the idle trims can save between ignition cycles. The computer adjusts during your 20 second idle interval but then when you go to restart it has to basically do another relearn.