Whining-devil

iTrader: (1)

okay so ever since winter came my lsj has been acting weird. Its a stock engine with an intake and header back exhaust. When it is really cold out the car sounded like a weed wacker. When its a bit warmer the car drives normal and idles normal but at wot it sputters and seems hesitant sometimes with a little smoke behind me. At wot boost is normal 11psi, but hp is down to about 160 from the usual 230. I also had some black stuff behind my exhaust dripping too. any ideas.

it has the following codes p0036, p0133, p0141, p0300.

Tony Luckert

P0036 is an O2 Heater control circuit (sensor 2) error
P0133 O2 sensor circuit, slow response (sensor 1)
P0141 O2 sensor heater circuit malfunction (sensor 2)
P0300 Random/Multiple cylinder misfire detected

My guess would be to take a look at your O2 sensors.

chris88z24

Aftermarket intakes and winter don't mix. Even the stock one sucks up a lot of salt and water. Best to replace the air filter and clean the MAF sensor every spring.

reddragon72

so can the MAF cause a power fluctation.....

Also mine is doing this minus the sputter just fluctuating power.

I recored a vid of my fuel pump whining at two different levels. Does anyone else hear there's?

uploading the vid now will post link in my thread in a bit.

Slowbalt2000

iTrader: (1)

Yes maf can cause hesitation and decrease in power if dirty, but since your o2 sensor is whats throwing the codes id check those out first.

Hockeyman

iTrader: (4)

replace o2 sensor on the header.

Whining-devil

iTrader: (1)

soo i know i havent had an o2 past the cat for about 5 years now. But i have an aftermarket header and its been a while since i worked on my exhaust. is the first o2 location still on the header or is it on the aftermarket dp now? and i cleaned the maf, tb, air filter, new sparks, and a fuel injector cleaner and the car is back to normal now.