yesterday when i start my car all seems to be all right when i get in a trip and try to get fast my card didnt respond ..
my rev limit was 4 - 4,500 when it usually touch 6,500 i get scared and thought that it was just an error and try to get fast and didnt respond it was the same...
then i just quit my trip, stop in a gas and try to rev the car and the rev limit was 5,000 and didnt get higher so i got scared take it to my house get an scanner and try to get the codes so it appears P0134 & P0171

can some one help me a little bit?

thankx

The Code P0134
- Says Relation with air and fuel... its running rich..
- oxigen 1 - 4 front sensor damage ...

The Code P0171 says..
- System running rich..


any ideas ?

 

Double check your codes. P0171 is system lean on bank 1.
P0134 - Oxygen 02 Sensor Circuit No Activity Detected (Bank I Sensor 1) I'd check the oxygen sensor for signs of life. Bank 1 is the front sensor I think, but would someone verify please.

 

were is the O2 front sensor located?

 

That should be the one on the o2 housing

 

There are 2 oxygen sensors on the exhaust pipe. One sensor, referred to as the front one is ahead of the catalytic converter, the other sensor is behind the catalytic converter.

 

Yeah, lol, we don't have turbos. it is further downstream than where the O2 housing would be located, it's actually downstream of the flex pipe as 2006 RA stated

 

could it helps if i clean it?
would it be dirty? or the O2 sensor its damaged?

 

verify continuity of the circuit, and then replace it if the wiring is good.

You can try cleaning it, but i would just replace it.

 

well i just clean the O2 sensors and reset the computer and the cell didnt turn on again...

but my car is still protecting its self and doesnt rev more than 4000
when i try to pull my car it doesnt responds and it goes very slow

i dont understand why my car protect its self

it doesnt appear any cel my car is still not running can some one help me? or have any idea whats wrong?

 

if it's staying in limp mode it should still be throwing a code. but limp mode caps the rev to 3000 if i remember correctly.

does it sound normal?

 

well the check engine light doesnt turn on since i clean the sensor and reset the computer..

the car sounds normal it doesnt have an extra noise but it cant rev more than 4k when the car is running and when its idle it doesnt go more then 5k some times it goes til 6.5k but its rare it just happens 1 time...

but the engine sounds normal but when i accelerate it just sounds rought like it cant give the power the engine have...

i was looking for engine knocks but it doesnt sounds rare ...

any ideas?
i dont think it could be the MAF sensor because the car just starts up and you can drive it so it cant be...

any ideeas?

 

none, without any codes, it's hard to say.

If it was me, i would replace the O2 sensor since that's what the original codes pointed to, then go from there.

 

could it be that the car just save the lim mode and it needs to get a master reset or something like that?

cuz a guy tells me that the car saves the data and it needs to get a master reset not just code reset... or something like that

 

Does it idle a little rough? What i mean is .. Without reving.. is your rpm stable? Cause i had a damaged maf sensor before which gave me the same symptoms.. Rough idle and low rev limits but def drivable.. If you have a cold air it may have contributed to damaging the sensor. I say thats your problem (:

 

mine does the same codes you figured out the problem yet?