My lambda sensor has been goosed for a while (i have a replacement but just can't get the old one out )..... there are no check engine lights to indicate this but it does store the error code 32 (lambda). Also the lambdlink clear shows some very strange readings. Anyway i occassionally get limp home mode now, boost limited to 0.6 bar. This comes and goes whenever it pleases.... or so it seems. I haven't reset the ecu but it goes back to full boost them limits it again then back to full boost. It does sometimes occur when i get activity on the knocklink.... doesn't have to show red tho? Maybe a coincidence???

Anybody know what the causes of limp mode are and does a knackered lambda trigger it? I've done a search but not dug much up .

Cheers,

Tony.

 

I don't think so.

I ran with a duff Lambda for almost 2 months while trying to convince my Dealer it was faulty. I had a 32 CEL code once or twice, but no noticeable problems other than the car running rich and wasting a bit more fuel.

My sensor reading was just a flat line of .3v IIRC. Not sure what reaction you'd get if the readings were all over the shop.

Stefan

 

My sensor seems to be flatlined too.... but showing rich . Wounder why it's going into limp home mode then??????

Tony.

 

check the error codes

I think it might

 

Paul, error code 32 is stored in there.... the CEL does not light up tho. It's the only thing i can think of that's causing it. Must get the old lamba out and change it. I was going to fit the new one in the downpipe but i can't get the bung in that hole out either . I must be a wimp .

Tony.

 

Have a go when its hot. You can do it!

Justin

 

... if i put my back into it .

I think i need some quality tools.... just don't want to push it too far and knacker the threads on the downpipe or headers. Not much chance of that really (the thread on the sensor is a different matter) but if it can go wrong it normaly does .

Tony.

 

Liberally re-applying a thread-loosening oil (WD40 sort of works but there's better about!) & having the exhaust 'not cold' makes the job a lot easier. Just don't touch anything
And applying the lubricant when the pipe's cold is a good idea, unless you enjoy the fumes
And, there are many different levels of lambda knackeredness - could cause a lot of odd things! I wouldn't worry about it until the lambda's changed. At least if it's running in 'limp home mode' you're unlikely to damage anything

 

Looks like i'll be getting my hands dirty this weekend then.... thanks for the advice guys.

Cheers,

Tony.

 

Maybe depends on model year. I run mine with only a wideband in and it hardly ever shows a CEL.

 

To be honest the sensor has been knackered for a couple of months now but it's only just started storing the error code. Not sure why this would be?

Tony.

 

Guys, when you have the sensor out and in hand, could you please write down for me the bosch part # stampings on it? Would be most appreciated.