Grrrrrrr. Lambda Sensors - Page 11

JamesV70R · Feb 15th, 2011, 20:47

Just been for a drive - few shudders which felt a bit like misfires on my way out of the drive, but other than that it felt good as gold. Even tried to induce any misfire-like symptoms - hill + W + high rpm. Only noises I could make out were what appeared to be inductions noises.

Pending code of P1133 - Front 02 Sensor. Idle fluctuating by about 50, STFT @ 0.0 LTFT @ -0.8

Good enough for the moment but really want to get to the bottom of it.

Chris_Rogers · Feb 15th, 2011, 21:40

I'd suggest you give it a few days to settle down, there must be a lot of carbon in the CAT/Exhaust.

I run may help things.

JamesV70R · Feb 15th, 2011, 21:57

Thats what I'm hoping. Its getting a run to Ace Cafe this weekend which will hopefully sort things out.

JamesV70R · Feb 18th, 2011, 11:05

Misfire codes and Lean codes now. On the lookout for a new FPR and going to get my new fuel filter at lunch.

Oh, and no activity on Bank 1 Sensor 1 H02S apparently ... but I will have to wait and see if that comes back ...

Chris_Rogers · Feb 18th, 2011, 16:59

Could you post the actual code Nos.?

+ LT & STFT.

JamesV70R · Feb 18th, 2011, 20:08

0300 was a definite, can't remember the others unfortunately. Was on my way to work and quickly pulled into a sideroad when the idle started bouncing and the car was throwing out a haze of smoke.

There was a definite mention of Lean, and the 02 Sensor Bank 1 - Think I took a screenshot, will see if I can find it.

JamesV70R · Feb 20th, 2011, 21:08

After unplugging the Front 02 Sensor on Friday I have had (touch wood) so far no noticeable issues with the car. The idle still comes and goes slightly - but nowhere near as much as it was and its smooth while it does it.

Fuel trims appear fine (LTFT -0.8 STFT 0.0 Last time I checked) and economy is 99% back.

No idea what this signifies though. Oh well, management light is on but until I have some more ideas ...

Chris_Rogers · Feb 20th, 2011, 21:29

Is the front sensor the correct one for the car and a genuine OEM unit?

If the fault code is still P1133 then note the fault could be with the rear O2 sensor.

JamesV70R · Feb 20th, 2011, 22:34

Fault code is for the Heater Circuit - It doesn't say No Signal or similar which is what I would have expected seeing as we have totally unplugged it.

It was a genuine brand new, boxed and sealed BOSCH part from AllParts, and the numbers matched.

Chris_Rogers · Feb 21st, 2011, 16:50

What was the actual fault code number?

A fault with the heater circuit, given a brand new genuine sensor, suggests a wiring problem.

Feb 15th, 2011, 20:47	#101
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	Just been for a drive - few shudders which felt a bit like misfires on my way out of the drive, but other than that it felt good as gold. Even tried to induce any misfire-like symptoms - hill + W + high rpm. Only noises I could make out were what appeared to be inductions noises. Pending code of P1133 - Front 02 Sensor. Idle fluctuating by about 50, STFT @ 0.0 LTFT @ -0.8 Good enough for the moment but really want to get to the bottom of it.

Feb 15th, 2011, 21:40	#102
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	I'd suggest you give it a few days to settle down, there must be a lot of carbon in the CAT/Exhaust. I run may help things.

Feb 15th, 2011, 21:57	#103
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	Thats what I'm hoping. Its getting a run to Ace Cafe this weekend which will hopefully sort things out.

Feb 18th, 2011, 11:05	#104
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	Misfire codes and Lean codes now. On the lookout for a new FPR and going to get my new fuel filter at lunch. Oh, and no activity on Bank 1 Sensor 1 H02S apparently ... but I will have to wait and see if that comes back ...

Feb 18th, 2011, 16:59	#105
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Could you post the actual code Nos.? + LT & STFT.

Feb 18th, 2011, 20:08	#106
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	0300 was a definite, can't remember the others unfortunately. Was on my way to work and quickly pulled into a sideroad when the idle started bouncing and the car was throwing out a haze of smoke. There was a definite mention of Lean, and the 02 Sensor Bank 1 - Think I took a screenshot, will see if I can find it.

Feb 20th, 2011, 21:08	#107
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	After unplugging the Front 02 Sensor on Friday I have had (touch wood) so far no noticeable issues with the car. The idle still comes and goes slightly - but nowhere near as much as it was and its smooth while it does it. Fuel trims appear fine (LTFT -0.8 STFT 0.0 Last time I checked) and economy is 99% back. No idea what this signifies though. Oh well, management light is on but until I have some more ideas ...

Feb 20th, 2011, 21:29	#108
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Is the front sensor the correct one for the car and a genuine OEM unit? If the fault code is still P1133 then note the fault could be with the rear O2 sensor.

Feb 20th, 2011, 22:34	#109
JamesV70R Forum Support Team Last Online: Yesterday 21:15 Join Date: Aug 2009 Location: Watford	Fault code is for the Heater Circuit - It doesn't say No Signal or similar which is what I would have expected seeing as we have totally unplugged it. It was a genuine brand new, boxed and sealed BOSCH part from AllParts, and the numbers matched.

Feb 21st, 2011, 16:50	#110
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	What was the actual fault code number? A fault with the heater circuit, given a brand new genuine sensor, suggests a wiring problem.

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