...but maybe you just got water in one of the connectors. Pull each one and spray it with WD40 or use compressed air to blow them out.
Are there four connectors or eight? If there are four connectors, I know where to pull, otherwise I have no clue because I don't really know where the injectors are. I know where the four rubber deals come out from under the engine cover and plug into the "ports"...
You have to remove the engine beauty cover, and underneath that is your injectors, look at each sparkplug and followup to the top of the cylinder cover, there will be a black connector wrapped in electrical tape and plugged into a two pin connector held on to the injector by a wire spring, squeeze the spring and the injector plug will come off, check it for corrosion and water.
You have to remove the engine beauty cover, and underneath that is your injectors, look at each sparkplug and followup to the top of the cylinder cover, there will be a black connector wrapped in electrical tape and plugged into a two pin connector held on to the injector by a wire spring, squeeze the spring and the injector plug will come off, check it for corrosion and water.
Thank you for the detailed explanation. I'll check it today.
Okay, pulled the injector connector deals. They're all clean. There are eight of them.
Next, I pulled the codes again and came up with:
* IP2128 -> HISTORY
* IP2710 -> HISTORY
* PC0420-> CURRENT
Before I had recorded the main code as PC0240 after looking at it twice. That was wrong, it's PC0420.
• P2128 - Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage
• B2710 - PASSKey Open/Shorted Pellet
• P0420 - Catalyst System Low Efficiency (hence the Service - Emmisions System message)
So shall I worry about the history codes?
... and what do the history codes I have mean? The APP may have to do with the 2500 RPM accelerator vibration...
I think this PC420 is quite common problem on Norhtstars . When it appears you get a lower performance as well .
Yea, I noticed.
The thing that pisses me off is that I had the damn CAT CONVERTER replaced about 3 months ago. It can't be the cat converter then. What the hell do I do? I guess it doesn't matter since I'm taking it to the mechanic anyway.
DTC P0420 Catalyst System Low Efficiency
Circuit Description
This diagnostic test monitors catalytic converter efficiency. Efficiency is the ability of the catalytic converter to perform its function in reducing exhaust emissions of hydrocarbons, carbon monoxide, and oxides of nitrogen. Catalytic converter efficiency is calculated using the oxygen storage capacity of the catalytic converter. The oxygen storage data is collected from the front bank, rear bank and post-converter oxygen sensors during idle conditions. The oxygen content of the exhaust is measured before (front bank and rear bank HO2S) and after (post HO2S) the catalytic converter.
When the Conditions for Running the DTC have been met the air fuel mixture is transitioned from rich to lean or lean to rich depending on the Post HO2S current rich or lean state. After the first transition is completed a second, opposite transition is performed. The amount of time it takes for the Front bank and Rear bank HO2 sensors to cross a calibratable stoichiometric threshold is recorded. The length of time it takes the Post converter HO2S to cross the same stoichiometric threshold is also recorded.
The longer it takes the Post HO2S to cross the stoichiometric threshold the better the oxygen storage capacity of the catalytic converter. If the Post HO2S crosses the stoichiometric threshold too close to the same time as the Front bank and Rear bank HO2 sensors then the catalytic converter efficiency would be considered low and DTC P0420 will set.
Conditions for Running the DTC
* DTC's P0101, P0102, P0103, P0105, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0139, P0140, P0141, P0143, P0144, P0146, P0147, P0151, P0152, P0153, P0154, P0155, P0171, P0172, P0174, P0175, P0300, P0322, P0371, P0372, P0440, P0442, P0446, P0502, P0503, P0506, P0507, P1108, P1114, P1115, P1133, P1134, P1139, P1140, P1153, P1154, P1320, P1350, P1370, P1441, P1508 or P1509 not set.
* DTC P0420 test has not run this ignition cycle.
* Catalytic converter at operating temperature.
* Engine is at idle.
* Engine is in closed loop fuel control.
Conditions for Setting the DTC
Catalytic converter efficiency is too low.
Action Taken When the DTC Sets
* The PCM will illuminate the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
* The PCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records.
Conditions for Clearing the MIL/DTC
* The PCM will turn the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail.
* A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
* A History DTC will clear after forty consecutive warm-up cycles with no failures of any emission related diagnostic test.
* Use a scan tool to clear DTCs.
* Interrupting PCM battery voltage may or may not clear DTCs. This practice is not recommended. Refer to Clearing Diagnostic Trouble Codes in PCM Description and Operation.
Diagnostic Aids
Fuel with a high sulfur content can cause a marginal converter to look bad. Check fuel quality.
Only early 1998 model year production vehicles are equipped with a Pre-convertor Heated Oxygen Sensor (HO2S). If equipped, this HO2S is connected to the PCM but is no longer monitored or diagnosed. The remaining heated oxygen sensors retain the following naming convention:
* Bank 1 Sensor 1 (Rear bank)
* Bank 1 Sensor 3 (Post converter)
* Bank 2 Sensor 1 (Front bank)
