bcr4d

Check engine light came on and I pulled up 1126 & 1133. Can someone tell me how serious it is? thanks

Robin 993DX

Someone had mentioned that this may be caused by a cracked oil seperator and torn oil seperator boot, try to serach for those two items.

bcr4d

I also notice that the car idles fine, but when accelerating, it appears to hesitate and it seems that it's struggling for air.

Loren

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit
P1133 Oxygen Sensing Adaptation, Lower Load Range, Bank 2 – Above Limit
Fuel/air mixture so lean that sensing has reached its rich threshold. What that is saying is that DME can not make the mixture rich enough - you are running too lean (too much air to fuel ratio).

Potential causes are:
– Incorrect signal from MAF sensor
– Intake air system leaking
– Fuel pressure too low
– Volume supply of fuel pump too low
– Fuel injectors fouled

I would start with the first two item. Clean the MAF and check for loose or cracked hoses.

99firehawk

what year car auto or stick, how many miles, did you just have any work done or did you just do some owrk yourself

bcr4d

car is a 2000 C4 manual. 65K miles. I did have a problem with a 1128 and 1130 code. I cleaned the MAF, took it through emissions and passed with flying colors. I did noticed lately that I've been getting a abs and psm light when driving hard. I think that the MAF is toast. I'm going to order a new one. Anyone knows where I can get a MAF for a good price? I'm going to clean it and check for air intake leaks in the mean time. thanks again.