TCCoA Forums - View Single Post - Stumbles upon initial Acceleration?

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post #11 of (permalink) Old 03-09-2017, 11:35 AM Thread Starter
Thomas A
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Join Date: Jul 2002
Location: Overland Park, KS
Age: 34
Posts: 858
Quote:
Originally Posted by theterminator93 View Post
Sounds to me like something is out of whack in open loop. Check the open loop flag to see if the issue goes away when it switches to closed loop.
I think you may be onto something with this. I watched this on my scan tool this morning. The air temp and IAC was a bit warmer this morning, starting at 46 degrees, so the car went into closed loop almost right away. I didn't notice the stumbling nearly as bad as prior and it completely cleared up very soon, before the engine temp even hit 100 degrees.

I'll try it this weekend or next week as we are supposed to have cold temperatures again to see if I can drive it more while still in open loop to confirm the correlation. I'll report back with the results.

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