Question about Cars & Trucks
I changed the map sensor and cleaned the throttle body what else should i do
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I went to a local
Definitely clean that throttle body...can do it yourself for around $7.
Instructions for doing it without removing the throttle body.
1. Disonnect the battery....very important so your stepper motor isn't ruined when moving the butterfly.
2. Remove the plastic resonator on the top of the engine (The black piece that says 4200 on it)
3. Remove the large rubber hose from the throttle body.
4. Clean away, with throttle body cleaner or Seafoam, I just use the blue shop towels to clean in there. Could use a plastic bristle brush also for more elbow grease. Be very careful, as the butterfly will cut you very easily, very sharp edges. Make sure you get all the gunk out of there, including any edges of gunk that may have formed, preventing the butterfly from opening and closing properly. Needs to be nice and shiny.
5. Hook the resonator and hoses back up, don't forget the little pcv hose on the front right corner of it.
6. Hook the battery back up and drive around for 20 minutes or so with all accesories OFF. The computer will relearn a properly functioning throttle body at that point.
7. Enjoy a little bettery gas mileage and horsepower
As far as the injector cleane....Buy a $10 can of Seafoam, that will clean the injectors. Look on Youtube on how it works, good stuff.
Posted on Feb 21, 2011
SOURCE: 06 chevy trailblazer with fault
The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the ECM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.
This diagnostic procedure supports the following DTC:
DTC P0506 Idle Speed Low
CONDITIONS FOR RUNNING THE DTC
- DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0121, P0222, P0223, P0230, P0300, P0336, P0442, P0446, P0449, P0452, P0453, P0455, P0462, P0463, P0496, P1516, P2101, P2135, P2176 are not set.
- The engine is operating for at least 60 seconds.
- The engine coolant temperature (ECT) is more than -60°C (-140°F).
- The intake air temperature (IAT) is more than -10°C (-14°F).
- The barometric pressure (BARO) is more than 65 kPa.
- The system voltage is between 9-18 volts.
- The vehicle speed is less than 1.6 km/h (1 mph).
- DTC P0506 runs continuously when the above conditions are met.
CONDITIONS FOR SETTING THE DTC
- The actual idle speed is approximately 100 RPM lower than the desired idle speed.
- The above condition is present for 5 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.
View & Print Options Step 1 - Step 5
The number below refers to the step number on the diagnostic table.
2. This test determines whether the engine can achieve the commanded RPM. If the engine does not reach the commanded RPMs, the test determines whether the RPM is too high or too low.
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Posted on Jun 03, 2011
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