Q: loss of power when driving check engine light blinking at 30 mph just changed manifold intake have p0171 p0174codes

asked by on

when i drive theirs rough idling when i press the gas it has trouble going but as soon as i get to 30 mph engine light starts blinking , manifold has been replaced new wires and plugs were replaced also a strong smell of gasoline happens and p0171 and p0174 codes pop up could be a that i need new o2 sen and also new coilpacks? Also when I rev the engine on park I do hear a pop sound by the right side lights also hear it when I'm driving losing power

My car has 15600 miles.
My car has an automatic transmission.

You are having problems with the fuel injection system poppet injectors not opening up or stuck open causing the misfire. You may have a bad fuel pressure regulator or you did not seal the fuel lines into the regulator good and they are leaking. Trace down the fuel smell you are getting and fix, that then you may be okay from there. Needing O2 sensors and coil packs won’t help either.

Since codes P0171 and P0174 could mean a few different things, have a mechanic come scan the computer and see if the problem can be pinpointed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. loss of power when driving check engine light blinking at 30 mph just changed manifold intake have p0171 p0174codes

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Dead truck battery every time it's left off for a few hours.

If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...

Q: I have codes P0151, P0171, and P0174. I have changed out my O2 sensor, but now I have all these codes

Hey there. The codes you have downloaded simply relate to malfunctions in the "engine management system." It appears codes were set for oxygen sensor voltage out-of-range, possible EGR (exhaust gas recirculation) problems such as a blockage, and a generic code...

Q: My traction control is off and half of the engine doesn't work, I hooked up a computer to it and the P0800 code is on

Hello, thanks for writing in. P0800 is the trouble code for an issue with the vehicle's Transfer Case Control system. When the transfer case control module, a computer that is separate from the engine computer, detects an issue with the...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...