Yes indeed. The pintle position is controlled anx monitored via the electronics in the top of the egr housing. If it ain't where it's supposed to be, you get one code or another for the egr. Hopefully you cleaned the ports leading to and the egr. If not, the carbon will eventually find its way into the egr

 

drove about 35 miles in mixed. still have the code . IM for EGR is ok. i'm assuming if I did clear code it would read not ok. she will drive it another 20 plus miles tomorrow. so at what point do I toss in the towel and spend 77 on new. we anticipate Friday apt for inspection.

 

ok here's the deal. called my guy and he cannot get it in until Monday anyway. he did agree it should have reset the code if it was fixed. however I told him that if he fixed whatever needed fixed and had to drive it around to reset everything that didn't it make sense that my gf driving 20 to 30 miles a day for 5 more days would reset all the codes to where they need to be OR it would kick them off again. he did agree there


so tonight everything will get reset. i'm assuming my machine will do this. I never did it before lol. he also said knock sensor thing may not be a true code in that something may not be wrong.

 

If you didn't address the knock sensor issue, then I would EXPECT the CEL to still be ON.

EGR states ready implied the P0404 is gone. If you have multiple codes, any not addressed will keep the light on.

Got to Autozone and get them to read the codes for free -- find our what is LEFT

 

I cleared all the codes last night. waiting for her to get home to hook up the machine and see if anything came back and the readiness state of things.

 

all IM set to Ok except for the evap..says INC


no codes at all.


will check it every nite but so far looking good.

 

look up GM drive cycle. EVAP test has some bizarre conditions that must be met in order for it to be run.

Good to hear.You had no EVAP codes before so it is just a matter of getting the readiness test to run.

Hope the KS code does not come back

 

evap still at INC even after a week driving


no codes and all else appears ready.


tomorrow we get it inspected.


thanks for all the help. does the KS not coming back mean it is actually ok? how would they have tested this at the garage

 

prob bad gas set off knock sensor. Fluke.
--------------------
Run a complete GM Drive Cycle, now that the CEL is out.
FOLLOW the ENTIRE test IN ORDER.
SKIPPING STEPS, even though those tests may be completed, MAY CAUSE TESTS NOT TO RUN.

================================================== =

Inspection/Maintenance (I/M) Complete System Set Procedure
Diagnostic Instructions
• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provide an overview of each diagnostic category.

Description
The purpose of the Inspection/Maintenance (I/M) complete system set procedure is to satisfy the enable criteria necessary to execute all of the I/M readiness diagnostics and complete the drive cycles for those particular diagnostics. When all I/M monitored diagnostic tests are completed, the I/M System Status indicators are set to YES. Perform the Inspection/Maintenance (I/M) Complete System Set Procedure if any I/M System Status indicators are set to NO.

I/M Data List
To determine if the I/M readiness diagnostic tests can be run this ignition cycle, use a scan tool to observe the I/M monitor enabled parameters in the I/M Data List.

Conditions for Meeting a Cold Start
• The ignition voltage between 11-18 volts.
• The barometric pressure (BARO) is more than 75 kPa.
• The start-up engine coolant temperature (ECT) is between 4-30°C (39-86°F).
• The start-up intake air temperature (IAT) is between 4-30°C (39-86°F).
• The difference between the IAT and the ECT is less than or equal to 6°C (10.8°F)
• The ambient air temperature is between 4-30°C (39-86°F).
• Fuel level is between 15-85 percent
• Without RPO LMG--The fuel alcohol content is less than 15 percent.
• With RPO LMG--The fuel alcohol content is less than 87 percent.

Circuit/System Verification
Review the Inspection/Maintenance (I/M) System Status indicators with a scan tool. All I/M System Status indicators should report YES.

Inspection/Maintenance (I/M) System Set Procedure
Important: Whenever the ignition is turned ON, ignition positive voltage is supplied to the heated oxygen sensor (HO2S) heaters. After verifying the enable criteria, turn OFF the ignition for approximately 5 minutes to allow the sensors to cool before continuing with the test. Once the engine is started, do NOT turn the engine OFF for the remaining portion of the set procedure.
1. Ensure that the vehicle meets the conditions for a cold start listed above.
⇒ If the evaporative emission (EVAP) I/M System Status indicator displays NO, perform the EVAP Service bay test if available.
⇒ If the EVAP Service bay test is NOT available, it may take up to 6 drive cycles, with up to 17 hours between drive cycles, for the EVAP I/M System Status indicator to transition to YES.
⇒ If the O2S Heater System Status indicator displays NO, ensure that the ignition has been turned OFF for at least 10 hours.
2. Set the vehicle parking brake and ensure the vehicle is in park for automatic transmission or neutral for manual transmission.
3. Turn OFF all accessories; HVAC system, other electrical loads, including aftermarket/add-on equipment, etc.
4. Start and idle the engine for at least 2 minutes and until 65°C (149°F) is achieved.
5. Run the engine for 6.5 minutes within the following conditions:
• MAF parameter between 4-30 g/s
• Engine speed steady between 1000-3000 RPM
6. Return the engine to idle for 1 minute.
7. Apply and hold brake pedal, and shift to Drive for automatic, or apply clutch pedal for manual and operate the vehicle within the following conditions for 2 minutes:
• Depress the accelerator pedal until TP Sensor angle is more than 2 percent.
• MAF signal between 15-30 g/s
• RPM steady between 1200-2000 RPM

Important: Do NOT touch the accelerator pedal during the idle period. A change in TP Sensor angle or an increase in engine speed may invalidate this portion of the test.

8. Release the accelerator pedal and shift the vehicle to Park for automatic, or Neutral and release clutch pedal for manual, and allow the engine to idle for 2 minutes.
9. Quickly depress the accelerator pedal until TP Sensor Angle is more than 8 percent and return to idle, repeat 3 times.
10. Allow engine to idle for at least 2 minutes.
11. Release the parking brake and drive vehicle at 24 km/h (15 mph) or slower for 2 minutes.
12. Continue to drive the vehicle for at least 5.5 miles between 45-112 km/h (28-70 mph) with the vehicle reaching at least 80 km/h (50 mph).
13. Release the accelerator pedal for at least 2 seconds. This will allow the vehicle to enter decel fuel cut-off.
14. Depress the accelerator pedal until the TP Sensor angle is increased 3-20 percent and maintain a safe speed for 1 minute.
15. Safely stop the vehicle, with the engine in drive for automatic or in neutral with the clutch pedal depressed and parking brake applied for manual, idle for 2 minutes.
16. Shift to Park for automatic and apply the parking brake, or neutral and release clutch pedal for manual.

Important: Do NOT disturb the vehicle or turn ON the ignition until told to do so. Disturbing the vehicle may invalidate this portion of the test.

17. Turn OFF the ignition and exit the vehicle. Do NOT disturb the vehicle for 45 minutes.
18. Observe the Inspection/Maintenance (I/M) System Status with a scan tool. All of the I/M System Status indicators should display YES.
⇒ If the EVAP I/M System Status indicator displays NO turn OFF the ignition for 17 hours, ensure that the vehicle meets the conditions for a cold start, and repeat steps 12-18 six more times, or until the EVAP I/M System Status indicator transitions to YES. If the indicator continues to display NO, refer to the Inspection/Maintenance (I/M) System DTC Table to identify the DTCs that did not run. Follow the Conditions for Running the DTC in order to set the EVAP I/M System Status indicator
⇒ If any of the I/M System Status indicators display NO, refer to the Inspection/Maintenance (I/M) System DTC Table for the indicator which did not display YES. The I/M System DTC Table identifies the DTCs associated with each I/M System Status Indicator. Follow the Conditions for Running the DTC in order to set the associated status indicator.

____________________

The EVAP test can be a beeatch to run. Sometimes it may take more thn 1 drive cycle.

I've tried to highlight some of the more obscure criteria for the drive cycle that may not be met, especially starting w a full tank of gas!

____________________

Good Luck!

Let us know.

PS: If you have to, fail emissions on purpose.

It makes you legal on the road AND you get 30 days to to address which really just sounds like meeting the drive cycle criteria for ALL of the EVAP tests to run (there are multiple tests and they are tested at different parts of the drive cycle.

 

well its 100% legal. she picked it up so I didn't get to talk to anyone but it passed everything and I didn't see any extra on the bill for anything emissions related.


muffler strap was 60 but I didn't feel like special ordering it and playing with it. tie rod was cheap and the alignment I forgot about actually.


so his 1100 initial worst case was brought down to 300 for the garage bill and 120 for the parts I did myself


and this wonderful forum saving me on the EGR . i'm sure he just would have cleaned it and it would have passed, but it felt better me solving it and saving her even more money. thanks again


rear brakes are 3 and 4 so I want to do them before winter. been awhile since I did drums though. hope its easy