glorious german check engine light
#1
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12 C63 : 03 Jetta
glorious german check engine light
I've pulled the fault and it is saying bank one air to fuel ratio lean. naturally I'd assume mass air flow. the cel does not flash, but will cycle and turn off after days and may not return for weeks. I was a quart low on oil and added a bit, then the car was having a rough idle. any ideas on what else may be going on?
I have a new maf on order and will change the plugs at the same time as well.
I have a new maf on order and will change the plugs at the same time as well.
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12 C63 : 03 Jetta
thanks for the info. I will double check my seals on the air boxes (threw in dry filters awhile ago). then go from there. purge valves easy to replace?
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C63 ///AMG P30
#7
it isn't the airboxes, or the intake manifold, it's the car being retarded, I put my stock airboxes back on, no leaks, had my intake manifold replaced 6-7 months ago, no leaks, Car throws lean bank 1&2 ...at this point I could give 2 ****s about the CEL anymore, it's obviously slightly useless because even the dealership will admit theres no reason CEL should be coming on, honestly I wouldn't even worry about it, my car idles rough on really cold mornings but once it warms up it's fine. I use to get all paranoid about the CEL but now i realized 70-80% of the time it's nothing, I mean when my intake manifold was shot the CEL didn't even come on, but it comes on for 0 reason now? Wat..the intake manifold is a $5,000+ part and the car doesn't even turn on CEL for it? But it turns on CEL over a stupid dinky lean? makes NO sense, CEL's have 0 logic behind them, it's just random chance
and as for a tiny leak, wrong, when my intake manifold was shot, the car whistled so loud because of leaking air..guess what, no cel then, although the car ran like ****
and as for a tiny leak, wrong, when my intake manifold was shot, the car whistled so loud because of leaking air..guess what, no cel then, although the car ran like ****
Last edited by avery.whss; 02-09-2014 at 01:57 PM.
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#8
The cel is not 'random chance'
It is triggered based on parameters being out of tolerance
If it reads lean it is running lean
Or thinks it is, ie bad O2's, etc
Not good
Fix it
It is not running at its optimal point
I can't imagine a dealer telling you to ignore it
It is triggered based on parameters being out of tolerance
If it reads lean it is running lean
Or thinks it is, ie bad O2's, etc
Not good
Fix it
It is not running at its optimal point
I can't imagine a dealer telling you to ignore it
#9
I had the same code repeatedly on an 09 as well. Dealer replaced the MAF a couple times and decided to look into it more carefully the third time. Leaky gasket on one of the intake manifolds.
#10
It's the oxy sensor guys 200. Bucks and it's fixed
#12
MBWorld Fanatic!
it isn't the airboxes, or the intake manifold, it's the car being retarded, I put my stock airboxes back on, no leaks, had my intake manifold replaced 6-7 months ago, no leaks, Car throws lean bank 1&2 ...at this point I could give 2 ****s about the CEL anymore, it's obviously slightly useless because even the dealership will admit theres no reason CEL should be coming on, honestly I wouldn't even worry about it, my car idles rough on really cold mornings but once it warms up it's fine. I use to get all paranoid about the CEL but now i realized 70-80% of the time it's nothing, I mean when my intake manifold was shot the CEL didn't even come on, but it comes on for 0 reason now? Wat..the intake manifold is a $5,000+ part and the car doesn't even turn on CEL for it? But it turns on CEL over a stupid dinky lean? makes NO sense, CEL's have 0 logic behind them, it's just random chance
and as for a tiny leak, wrong, when my intake manifold was shot, the car whistled so loud because of leaking air..guess what, no cel then, although the car ran like ****
and as for a tiny leak, wrong, when my intake manifold was shot, the car whistled so loud because of leaking air..guess what, no cel then, although the car ran like ****
please tell me how much of this is sarcasm?