celicacobalt

I left the dyno and the car was running the best it ever had been. On the way home the car was running good until we stopped at pizza hut. After we came out the car was good but when we got on the parkway it disabled my whole engine and kept flashing engine disabled/engine power reduced and the car was dead on the side of the road. After 5 minutes the car was able to start back up. Then after about a mile it didnt disable the engine, it just went back into engine power reduced mode which wouldn't let me go over 45 mph and the car was puffing out black smoke. Then i pulled over for another 5 minutes and the car started back up and wasnt in power disabled mode but was running really bad and still blowing out black smoke. So I drove it to auto zone to see what CEL code was and I got these:

1. P0068 Throttle Position and Engine load do not agree
2. P0101 MAP or MAF Sensor Condition
3. P0036 Oxygen Sensor heater condition
4. P2a00 Performance bank 1 sensor 1 Open loop condition due to no response

Today the car is not puffing any smoke, im guessing the original smoke was from dumping so much fuel. Car idles normal. Havent tried pushing the car at all. CEL is still on.

The tune was made to run off of MAF only. Should some of the other systems be turned off that are creating these codes? Can it be done safely for a daily driver?

Jn2

iTrader: (1)

could be a bad throttle body or bad MAF...

Shaun927

i had the same problem; but it turned out it was the tune and then it was fine after i got it retuned

slowswap

Sounds like a MAF issue to me. Possible throttle body.

If you have spliced or custom wired anything related to the engine harness, go back and make sure the solder is still holding strong. If they're not soldered, do so.

celicacobalt

I think the MAF is ok. The tune is letting me hit fuel cut on the rev limiter though. how hard is it to change that?

celicacobalt

My traction control light keeps going on and off i guess that has to do with the TPS.

jimbos'ss

iTrader: (2)

did you bounce off the rev limiter hard, and it looks like your front o2 sensor is having a bad day. and check your TB, make sure it's clean and the blade is not sticking. if you have an extra TB swap em and see if that fixes anything.

celicacobalt

yeah, bounced off it hard 1 time under high boost. IM not sure if the front 02 is bad or if it was just the pcm freaking out making that code come up.

timberwarp

If the car is shutting off maybe the spark plugs are getting fouled out with fuel?

jimbos'ss

iTrader: (2)

i would say thats the initial cause of the problem, might have fried your front o2. and i'd still check the tb too.

celicacobalt

well i will pick up a new front o2 then.

jimbos'ss

iTrader: (2)

did you get it fixed or still having issues?

celicacobalt

turned off all the codes and now this problem is gone. new problem is that the car wont shift past 6ooo rpm in WOT. Cant figure out why.