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Car runs lean for a split second

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Old Jan 31, 2007 | 09:48 AM
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thompsonrx7
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Car runs lean for a split second
I just had a quick question i have 2 fc's one is a daily driver... but when i get up to about 3600 rpms...it goes lean for a split second and then back up to full power? anyone got any ideas?
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Old Jan 31, 2007 | 11:38 AM
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Do you feel a hesitation?
If not, it's normal.


-Ted
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Old Jan 31, 2007 | 11:44 AM
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yeah usually that is normal. With the rtek chip it reduces the 3800rpm secondary cut on to 3500 so that the primary injectors don't have a chance to go lean at that spot just before the secondaries kick on.
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Old Jan 31, 2007 | 12:13 PM
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From: Iowa
Originally Posted by RETed
Do you feel a hesitation?
If not, it's normal.


-Ted
Yes it does seem to backdown for a second...that is normal?
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Old Jan 31, 2007 | 12:47 PM
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Isn't it because the secondaries come on at 3800?
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Old Jan 31, 2007 | 12:50 PM
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From: Wayne NJ
usually it is a ground problem
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Old Jan 31, 2007 | 02:50 PM
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So how is the easiest way to correct this if it is a ground problem... check every ground in the engine harness?
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Old Jan 31, 2007 | 02:54 PM
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Here's the write up for grounding an FC

https://www.rx7club.com/2nd-gen-archive-72/grounding-how-thorough-discriptive-199558/
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Old Jan 31, 2007 | 03:00 PM
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Originally Posted by gxlspeeder
Here's the write up for grounding an FC

https://www.rx7club.com/showthread.php?t=199558
Use this instead: http://www.aaroncake.net/RX-7/grounding.htm
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