Misfire no power?

We might be barking up the wrong tree, the P0088 code "Fuel Rail/System Pressure - Too High." Which means the high pressure pump pressure regulator has gone bad or the sensor is bad, lets try replacing the sensor and if that doesn't help the high pressure pump will need to be replaced. Here are the instructions to help us fix the problem. Check out the images (below). Please let us know what happens.

Here is what the sensor looks like which is the one you found on Amazon. I would change that out and if that does not fix it, I would change out the high-pressure fuel pump.

Hello,

Sorry for the delay, I've been a little under the weather. I see you want to tackle the fuel rail pressure sensor (RPS). I will write the instructions below, the intake manifold will need to come off.

1. Release fuel line pressure.
(I like to pull the fuel pump relay and crank the engine over a couple of times)
2. Remove the engine cover.
3. Remove the air cleaner assembly.
4. Remove the surge tank.
5. Remove the low pressure fuel line.
- careful, there still may be residual pressure here when you crack the nut, put a towel over is as you turn-
6. Remove the intake manifold (A).
(See image 1)

-Note, try to protect the intake ports with the manifold off, as engine coolant may run into them, causing some issues when starting-

Now you should be able to see the fuel rail pressure sensor (See image 2). It should have a nut on it and be fairly straight-forward at this point.

Installation is the reverse of removal, torque for the intake manifold is below, and order of tightening is in image 3.

Tightening torque
Step 1 (a - h) : 3.9 - 5.9 N m (0.4 - 0.6 kgf m, 2.9 - 4.3 lb ft)
Step 2 (1 - 8) : 26.5 - 31.4 N m (2.7 - 3.2 kgf m, 19.5 - 23.1 lb ft)
Step 3 : Repeat 2nd step twice or more.

Let me know how it goes,
William

Thanks, I'm looking forward to some good news!

-William

Hello,

Oof, that's not good. Make sure the o-ring is seated well on the sensor and compare it to the old sensor. Before starting, let the car prime fuel pressure and check for leaks during that time before you decide to send the fire.

Let me know,
William

Hello,

I'm sorry, but I don't follow what you're saying. Certainly, a bad coil can cause issues, but not about leaking gas. Most definitely a bad injector can leak gas, but a compression test would not lead one to believe an injector is bad.

Likewise, a fuel leak would not cause the code P0088 you were having about high fuel pressure. However, I could see too high of pressure cause an injector to leak, and at that point I would replace the high-pressure pump.

Could you give us some more insight on the problem?

Thanks,
William

Hello,

No problem! If the fuel injectors are not leaking, I wouldn't replace them without knowing they are clogged. You can take them out and clean them if you want. A compression test will not tell you anything about injectors considering you are required to cut fuel supply to do the compression test, for safety reasons and because you only need the car to crank.

If you can use your scan tool and read the fuel pressure readings (should be kpa, bar, or psi units), it may lead us in the right direction. The scan tool should also be able to tell the voltage received by the sensor. If the pressure is too high at the rail, then it will need a high-pressure fuel pump. If it looks normal, then we need to start doing some electrical diagnostics.

Have a great holiday!
William