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Old 05-22-08, 06:03 AM   #13
landtank
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Join Date: Mar 2003
Location: Boston MA
Posts: 10,878
Quote:
Originally Posted by CivicFerio View Post
I believe on newer emission controlled vehicles, during down hill or coasting, the injectors spray the amount of fuel as if it was idling. This is done to keep the cat at optimum temperature at all times to reduce emissions.
I'll agree on this. Our trucks have an idling FT% that is triggered by the TPS when closed. I saw this state every time I let off the gas even when traveling the highway at 65MPH.


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