15 replies to this topic

[Tedski]

Hi, just downloaded this error code P1137, think its the lamda sensor, there are 2 apparantly??, any takers on solution please, engine light was on but now i have turned it off, car running OK fuel comsumption does appear to be high however car passed recent MOT so cannot be that bad. If it is lamda sensor can you please suggest replacement other than GM dealerships please or other alternative car fitments. The EGF valve is connected but the opening is blanked of etc, tried a cheater but this caused slight hesitations in running so now removed it.

Can has been remapped but do not know to what too which is helpful!!!

Tedski

 

[slindborg]

Looks like a bank1 sensor1 fault, as in the primary and important sensor. This will be causing it to run rich and probalby the reason for the hesitatiion.

 

New primary sensor (good one, not some cheap ebay crap) and you will be laughing

[smiley]

1137 is postcat lambda probe, and the reason you're consuming so much fuel, as the system is now running very rich to compensate for loss of data. 

Use either oem or NGK to replace. (other brands tend to give issues after a while)

http://www.amazon.co...ords=OZA531-GM3

 

 

Edited by smiley, 02 October 2014 - 04:13 PM.

[CHILL Gone DUTCH]

These seem to be failing rather a lot recently Just changed mine for a ngk one

[slindborg]

1137 is postcat lambda probe, and the reason you're consuming so much fuel, as the system is now running very rich to compensate for loss of data.  Use either oem or NGK to replace. (other brands tend to give issues after a while) http://www.amazon.co...ords=OZA531-GM3    

Hmm, why did my Google for 1137 get b1s1 lol never mind. Post cat lambda supplies NO data to the ecu for fuelling control, it's only misused like that in the alternative software. All it's there to do is to ensure the cat is there and working. Now what could be the case is a leak in the exhaust causing it all to go rich and crappy.

[smiley]

Yours is cheaper to replace. let me check my notes again

[Tedski]

Many many Thanks Gents,

i will order a good quality sensor, i assume its relative easy to get to is it??? says he....

The car is fitted with the miltech sports cat so whether this has got something to do with it possibly.

I am pleased with the car from the previous owner, i have some concern with a clonk from the from ns suspension to sort, believe its the steering rack worn as the ball joints do not show movement. Dare i say on here we have a Elise in the family and this is silky smooth in feel etc in comparision but this is due to the wear somewhere, anyway need to sort the eng light first.

i do not know why but everytime we buy a car we have to effectivily chase the old owner out of it.

Car is in very good condition even though she has 80K on the clock!!

Thanks again guys well worth joining.

will update outcome, any tips in replacement would be greatly appreciated.

Tedski

[slindborg]

Hold off on the replacement till we are sure which sensor it's poorly

[smiley]

 

1137 is postcat lambda probe, and the reason you're consuming so much fuel, as the system is now running very rich to compensate for loss of data. 
Use either oem or NGK to replace. (other brands tend to give issues after a while)
http://www.amazon.co...ords=OZA531-GM3
 
 

Hmm, why did my Google for 1137 get b1s1 lol never mind.

 

http://www.speedster.../z22secodes.pdf

 

[color=rgb(255,0,0);]P1137 "Detects and O2S 2 signal which is below the range considered lean while in power enrichment"[/color]

 

I took the post cat thingy from here: [color=rgb(255,0,0);]http://www.vx220.org...ror-code-p1137/[/color]

[slindborg]

Furry muff, I do love the way oem's don't all stick to the same rules with dtcs Still shouldn't cause any fuelling adjustments though as the post cat is for detection only rather than correction.

[smiley]

I know.

It's just the ecu throwing a hissyfit in the form of overfueling if the second lanbda goes iirc.

 

[slindborg]

That's the thing, it shouldn't impact driving at all, eg many many many other vx's have run fine with a naffed postcat lambda and even with my cheater that lies to them, they still run fine. as said it could have a leak further upstream and it's not enough to trip the precat into rich fault but its enough to trip the postcat fault.

[smiley]

as said it could have a leak further upstream and it's not enough to trip the precat into rich fault but its enough to trip the postcat fault.

 

I agree

 

Drop the diffuser tray and take a peek tedski.

[Tedski]

just so i am clear, it could be either an air leak between the two lambda sensors typically cat joint causing the post lambda to read lean on acceleration (oxygen enrichment) or the post lambda sensor has gone. Oxygen induction at cat joint could be during lifting throttle rapidly at high speed creating a vacuum effect in the pipework by high velocity gas passing at that moment in time.

The lambda pre cat sensor is ok and sends data to control the ECU therefore engine fuelling is correct otherwise this would show fault code too, therefore no engine damage.

Nothing serious to stop using car, years ago a friend of mine had an early esprit turbo and the mixture went a bit lean to say the least and it was my introduction into melted pistonheads, this was years before such things as engine lights so i am bit concerned when this aspect goes out of limits.

Have used the car today or be it a short run no engine light reappeared as yet.

Just for my intel is the post cat sensor easy to access, i am aware of the difficulties in removal of lambdas from experience with other cars.

Is there any sense in fitting both new lambdas at the same time, i appreciate the cost implication and i am not money bags!!i suppose this question is like how long is a piece of string!!

 

[smiley]

People have been running with eml on here for years, but usually knew the cause and took the cba route.

The main issue is that your problem indicator is gone when you hit real issues.

When you do quite a few miles in the vx, at some point the overfueling will cost x times the cost of a new lambda.

 

Cheapest is to put it on a ramp, drop the diffuser tray and have a look.

Broken wire on the postcat is number 1 cause, and easy to spot. (they go brittle due to heat being near the exhaust)

If you have a leak, you could also easily test holding something very light near the joints with the engine running to find blow. (i always use a piece of toilet paper)

 

This costs you nothing but time.

 

 

[Tedski]

No apparent leak on exhaust found, however this is just at tick over not a a larger volume flow rate etc. Car has now done 50plus miles and no engine light re-apperance. Pre cat sensor measures CO at inlet to cat and adjusts mixture via ECU, post cat sensor checks CO at exhaust cat exit, reading here should be lower than pre cat sensor, sorry thinking whilst writing. The car is fitted with the following courtney stage CS3 ie Remap, Airbox Mods, Sports Air Filter, Milltek Stainless Steel Sports Exhaust (Tailbox and Centre Section including Sports Cat and pre-cat removed), Rolling Road Tune.

Not sure if this has got something to do with it! thinking of remapping back to standard, the car has been recently fitted with polybushes in the engine mounts but at tick over it really gives you a good shake not doubt this will cause rattles shortly, its too rigidly mounted for me, conversions from non standard may have benefits but bring along negatives too.