4 Responses to “Control Engine”

1. honda guy
   December 5th, 2010 @ 2:32 pm

   The code P0505 is being set by something that is causing the idle to run either more than 200 RPM above the 'target' idle or more than 100 RPM below the 'target' idle for more than 20 seconds. If it happened after you changed the timing belt and never happened before that then something was altered during the timing belt replacement that affected the engine idle speed. The simplest answer is that the idle was set either too high or too low or the timing was advanced or retarded to change the engine idle from "before" to "after". It is also possible that the timing belt is one tooth off causing the idle to be too low or too high.

   The problem was never the IAC valve. The mileage between when the light was shut off and it came back on (40 miles the first time; 150 miles the second time) is a function of the two-test cycle criteria for determining that a problem exists. There are specific test criterial that must be met for the system to detect a failure. The light is not illuminated until the failure is first detected and then a second failure is detected on a consecutive test cycle to confirm the first failure. The elapsed mileage is just an indication of how long it took to confirm the problem still existed, not an indication of how long the replacement part took to fail.

   so, look to whatever was changed during the timing belt as the cause of your problem. Check the idle, the timing, the orientation of the timing belt and also the valve adjustment as probable causes.

   Hope that helps

   General Description
   A target idle speed that meets the engine operating conditions (coolant temperature, A/C ON or OFF, etc.) is stored in the
   engine control module (ECM)/powertrain control module (PCM). The ECM/PCM monitors and controls the idle speed so that
   the actual idle speed is equal to the target idle speed. If the actual idle speed varies beyond a specified value from the target
   speed (too low/high) over a certain period of time, the ECM/PCM detects a malfunction in the idle speed control system and
   a DTC is stored.

2. pegasus
   January 28th, 2011 @ 7:34 am

   Yes, it's a shame, but it seems nearly all the best architects and engineers are sociopaths, not one of them is willing to admit that burning kerosene brought down the twin towers, as is obvious to anyone with a grasp of basic physics.

   It's the same with pilots, they're also pretty wicked, there's hundreds of them who say no plane could have hit the Pentagon in the way it happened. Yet there are very few, if any, who support the official story.

   It seems the only areas, where there is a fair representation of those who believe the official story, is amongst TV pundits and politicians, so now we know where straightforward honesty is to be found, and that's in politics and TV.

   As you say, who cares anyway, it was ages ago.

3. Adam
   March 7th, 2011 @ 4:44 am

   I ran across a great if not entirely over designed smoker built buy a guy on a mailing list that I’m on. By the looks of it the guy’s a control engineer.

4. SEO
   June 4th, 2011 @ 1:52 pm

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