NickStarr

hello everyone, I am in need of help, my car is in "reduced engine power"
i have
P0087(fuel rail, low pressure)
p0223??(throttle/petal related?)

i was told to check the wires and I did, all is good.
I removed the TB and cleaned it out.
But when I put it back,
p0223, came on as well as traction off and ESC off and the limp mode remains.
Do I need a new TB?
New HPFP?
Please and thanks for all information.
My Bolt is
2009 SS/TC
116,xxxmiles

jdbaugh1

iTrader: (1)

I once drove through heavy water which got water in my TB connection, threw the P0223 code among others and put it in eng power reduced mode. Check your TB connections. Could be your TB position sensor is bad in TB but could also be a connection issue.

NickStarr

We have removed the throttle body and cleaned it, and the codes(P0223) came on after that process.
We ordered a TB just today just to play safe, I'm changing it out anyways so might as well.
I know that the "P0087" is it because that came up when the limp activated. (Fuel rail, low pressure)
Maybe a High Pressure Fuel Pump can be the problem since that's the "p0087" code?

I have an aftermarket intake, should I go back to stock?
Flash?
It's killing me cause I need this car for a job and I don't want to lose it..



I'm still new to this car world and it kills having a beauty that is reduced power.
Sorry and thanks in advance.

double clutch

iTrader: (1)

Do you have an rpd? Does the pressure display on the rpd, or is it just 3 dashes?

NickStarr

I don't know what is an RPD.
There's nothing to read the pressure on my car so I'm just gonna say no, sorry. :/

double clutch

iTrader: (1)

An rpd is a display that is on your A pillar. Has many different readings, one being fuel pressure.

Usually if the pressure cannot be read on the display, then you have a wiring issue. Otherwise I would say that your pump is going. I would dig through the harness next to the fuel pump for any broken wires. The harness likes to rub on the hpfp plate and cause issues.

You are getting the same code I did when my pump when out, however mine never went into limp mode. Mine only went into limp mode when I had wiring issues.

NickStarr

Ah. I only have the boost gauge. I'll dig deeper in that harness and give an update. Thanks.

umrdyldo

iTrader: (1)

P0087 is either the wiring to the high pressure fuel pump or the high pressure fuel pump itself.

or the regulator

NickStarr

Thanks.
I've already went ahead and ordered a HPFP on ZZP as well as a new TB.
so hopefully it comes in soon.
Wires seem to be safe as well.

I noticed that the car takes forever to start up, then it starts and the car surges. I can hear the intake breathing for dear life. And I go to the back to see the exhaust and see black smoke coming out.
My friend said it's carbon build up cause the TB is acting up?
I took disabled the MAF to see if that does anything and it actually did and the surging chilled out, it's still there but not as aggressive.
All I know is that the TB and HPFP are scanned problems so I ordered both.

NickStarr

UPDATE.
My TB from ZZP finally came in. Took about 3 weeks.
I slapped it on.
All codes were cleared besides P0223 but I took it on a test run. Was almost out of gas so I went to fill up tank. Then limp mode came back and P0087 came back right after gassing. And that's the only code now.
This is killing me.

jdbaugh1

iTrader: (1)

Did it seem to lean out a bit when the rpms climbed like it felt in ran out of power? Have you ever changed your fuel filter? Could be a restrictive filter and/or fuel pump.

NickStarr

There's a lot of thick black smoke coming out of the exhaust if that's what lean is?
My car did die a lot after gassing it up.
It died about 10 times for a 5 min drive..
It will be a bipolar revving as well as it completely losing RPMs.
(Sometimes, If I was in neutral, it will have no RPMs at all then I put it into gear and it will kick back to life)

-Direct injection,
I heard it has a fuel filter in the tank?
That you don't need to replace that at all.

I should be having a High Pressure Fuel Pump coming in soon as well from ZZP.
Let's hope it doesn't take forever..
If that's the case, what is the fix?

jdbaugh1

iTrader: (1)

No lean shouldn't cause smoke unless you ran it hard lean and fried a valve or ringland. If that's the case it won't be an easy fix. The smoke is concerning.

Now as far as the high pressure vs. regular pump in the tank I don't know if your low fuel pressure is before or after the HPFP so someone who knows more about LNFs will have to chime in on that.

NickStarr

Oops, sorry, I forgot to say
The thick smoke happened before I changed the TB.

The codes before the change was:
0087
0223
Changed the throttle body and the only code was
0223
Gassed it up and the codes switched.
0087 popped up and 0223 vanished.

My friend said cause it's running rich?
But for now, it's like 11:50PM here and I can't see anything. Lol.
So I have to update that tomorrow morning.

0087 is the HPFP on what all is saying.
I checked the wiring and all is good.
I did find some gas under the HPFP, a small small leak.

jdbaugh1

iTrader: (1)

Gas leaks are no bueno no matter how small. I would not drive the car at all if ANY gas whatsoever is leaking especially around the engine unless you want to burn the car to the ground.

Black smoke would be running rich. White smoke is water/coolant. And greyish-blueish smoke is oil.

NickStarr

My car will sit until I get that HPFP.
It is a big no no. Agreed.
I will update tomorrow morning on the smoke color and see if I can adjust/tighten that HPFP. might as well. A new one is coming right? Lol
Thanks to all for helping me out.

NickStarr

Okay. Final update.
It was my HPFP.
Changed it out. And it's a beauty now.
But I am having a p101
But I'll look into that in a bit.

Thanks everyone!

jdbaugh1

iTrader: (1)

P101? what's the last digit?

NickStarr

Oops. My bad. P0101.
"Mass or volume air flow A circuit range/performance"

jdbaugh1

iTrader: (1)

I'd make sure your MAF is connected properly. As that wasn't a code you had before I would assume it may have not gotten connected properly when you put it back together. I suppose there is also I chance it could have gotten damaged when you had the intake off as well.

umrdyldo

iTrader: (1)

In most cases a P0101 is a boost leak. Check your intake and all charge piping and intercooler connections. If it's a stock intercooler check for cracks.