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Re: IDLE SPEED CONTROL VALVE IN JAG XJ6
Hi the idler valve has a set up with jag equpment but there is a way round this,ifyou have had O2 sensors changed, is the idler working what are the revs when hot. 650 is to low 850 is ok with a hot engine Mike do you know where the idle valve is and the allen key manual adjustment try a quarter turn but mark it so you can turn it back if need be. let me know how it goes D
After I changed the O2 valve, check engine light doesn't come on but the engine still quit in idle.
What I needed to do is to increase the rpm for idle which was very easy. Under the hood just after the coil where the gas pedal cable connected there is a slider with adjustment stopper in the middle.
Just twist the stoppercounter-clock wise and move it forward, don't forget to tighten back. Find the right position for you, 850 RPM at idle works well for me when the gear in D position.
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2 airflow sensor out of operating range 3 coolant temp sensor out of operating range 4 oxy sensor indicates full rich 5 throttle potentiometer/airflow sensor... (low throttle pot signal with high airflow sensor signal) 6 throttle pot/airflow sensor...... (high throttle pot signal with low airflow sensor signal) 7 throttle pot...idle fuel adjustment failure(idle speed??) 8 intake air temp sensor...open or shorted circuit to sensor 11 Throttle pot at idle: Throttle pot idle trim out of normal range 12 Airflow meter: MAF signal out of range 14 Coolant thermistor: Resistance out of range or static during engine warm up 16 Air thermistor: Resistance out of range 17 Throttle pot: Out of range 18 Throttle pot/Airflow: Low throttle pot signal at high airflow 19 Throttle pot/Airflow: High throttle pot signal at low airflow 22 Fuel pump drive: ECU output to fuel pump relay 23 Fuel supply: Engine running too rich 24 Ignition Drive: ECU output to ignition Amp 26 Air leak: Engine running too lean 29 ECU self check 33 Injector Drive: ECU output to injectors 34 Injector: Looks for Injector dribble 37 EGR Drive: ECU output to EGR switching valve 39 EGR check sensor: EGR not working (normally pipe blocked) 44 Lambda (O2) sensor: Poor mixture control rich or weak (or misfire) 46 Idle speed Control valve: ECU output to Coil AB 47 Idle speed Control valve: ECU output to Coil CD 48 Idle Speed Control Valve: Stepper motor grossly out of position 66 Air pump: ECU output to air pump relay 68 Road speed sensor: Seen speed < 5km/h at high engine airflow 69 Drive/Neutral switch: Seen cranking in "D" or high airflow in "N" 89 Purge Valve drive: ECU output to purge valve this is all I could find
Fuel Fail 47 Idle speed control valve - coil 2: Open or short circuit.
This code 47 is signaling a malfunction that has occurred within the Idle speed control device. the code is saying that the circuit is inoperable at this time and you will need to service it or replace the entire device.
This is basically A computer-controlled air bypass valve located in the throttle body. It
helps control idle speeds by allowing air to bypass the throttle plates
as to increase the idle speed.
If you have replaced the Throttle postion sensor (TPS) or have replaced the battery, sometimes the car will need an engine set up.
I had the same problem with my xj6 and I did an engine set-up and it has been fine for the last 2 years. Also with the idle doing what it did it had a very harsh shift when driving and changing gears.
The BAD news is the dealer has to perform the engine set-up using the WDS (worldwide diagnostic system) The set-up will set the kick down switch, it will calibrate and set the TPS and also perform an oxygen sensor orientation test.
With the set-up it will allow the TPS sensor to be adjusted to the correct factory specs.
Sorry you can't do this your self.
This is obviously if there is no vac leaks and the throttle butterfly is set to 2 thousands of an inch. (gap on the side when closed throttle) check with a feeler guage.
do a compression test ?? about 180lbs anything less and it could need a valve regrind ,if compression seems ok then plugs and leads and use the bosch plugs with the 3 electrodes (for voltswagon) champion are **** and missfire.if still persists change dist cap and leads