No luck with a fuel filter removal

[F15E_WSO]

Got a CEL with a P0171 Lean fault, tried the IAC and Mass Air Flow sensor but it persists, others suggested replace the fuel filter so tired that next.

Got the filter and the disconnect packet of plastic rings, could not get the 3/8th ring/clip to release the lines. The plastic removal tool/clip is VERY blunt on the end, not tapered at all to slip in there and release the clips. Is this normal that it is blunt or did I pick up a lame packet of these overpriced plastic rings?

Tried to do this on my back in the driveway; pulled two fuel pump relay fuzes under the hood and the car died both times in about 3-5 seconds so don't know how much fuel "pressure" was released running the car until "fail". Nonetheless not comfortable squeezed under the car with the potential for a fuel deluge so taking this to auto-hobby shop next weekend.

Question is why am I having so much trouble releasing the fuel lines? I saw two or three posts detailing on how to use the release-tool but no luck. Can I anticipate this to be easier standing up under a lift or is there some voodoo involved that I am missing on what would appear to be a simple operation.

 

[Hartman]

You simply have to fight with it until it comes off. It is not something that will release right off the bat.

I don't anticipate this solving your problems. I would look into your fuel pressure as well as your oxygen sensors.

 

[1998Explodasport]

I agree with Hartman. You really have to be persistant when trying to change the fuel filter and removing the fuel lines. I also doubt that the fuel filter is your problem. You either have a vacuum leak or maybe a bad O2 sensor.

 

[waskly]

o2 sensors do not throw a p0171 dont listen to them

o2 sensors have there own set of lean codes.

 

[briwayjones]

o2 sensors do not throw a p0171 dont listen to them

o2 sensors have there own set of lean codes.

An O2 sensor can indeed throw a P0171 code. It's a Bank 1 O2 sensor lean code. The Thing is most of the time the problem isn't with the O2 sensor it's something else like a vacuum leak causing the lean code. If your plugs or wires have too many miles on them that can also throw a P0171 code.

 

[waskly]

An O2 sensor can indeed throw a P0171 code. It's a Bank 1 O2 sensor lean code. The Thing is most of the time the problem isn't with the O2 sensor it's something else like a vacuum leak causing the lean code. If your plugs or wires have too miles on them that can also throw a P0171 code.

NO

p0171 means bank 1 lean

IT DOES NOT MEAN O211 LEAN

 

[briwayjones]

Umm yes, P0171 means that Bank 1 O2 sensor is detecting a lean condition. Bank 1 is a O2 sensor location. It's the O2 sensor that is detecting the lean condition and throwing the code. As far as a O211 code I don't know what that is I can't even find it on a OBD code list.

 

[waskly]

umm yes, p0171 means that bank 1 o2 sensor is detecting a lean condition. Bank 1 is a o2 sensor location. It's the o2 sensor that is detecting the lean condition and throwing the code. As far as a o211 code i don't know what that is i can't even find it on a obd code list.

no
no and no


and did i mention no?

stop miss informing people, you sound like the dudes at autozone which sell o2 sensors for problems and think they can fix a car.

p0171 does not mean an o2 sensor.

 

[1998Explodasport]

no
no and no


and did i mention no?

stop miss informing people, you sound like the dudes at autozone which sell o2 sensors for problems and think they can fix a car.

p0171 does not mean an o2 sensor.

An O2 sesnor that is not reading properly WILL at times tell the PCM that bank 1 or 2 is running lean and you will get a code P0171 or P0174.

You need to stop misinforming people.

 

[Hartman]

no
no and no


and did i mention no?

stop miss informing people, you sound like the dudes at autozone which sell o2 sensors for problems and think they can fix a car.

p0171 does not mean an o2 sensor.

Doesn't necessarily mean it's an O2 problem but it can throw that code. I've seen it happen.

 

[F15E_WSO]

Thanks to all for the words, I will work through the CEL issue, hoping it is not the intake manifold gasket letting in air and the lean condition. I'll repost when a find the culprit for the P0171, I might take the car back to the reader too after I reset the fault. Who knows it could be something different now.....

 

[2TimingTom]

Got the filter and the disconnect packet of plastic rings, could not get the 3/8th ring/clip to release the lines. The plastic removal tool/clip is VERY blunt on the end, not tapered at all to slip in there and release the clips. Is this normal that it is blunt or did I pick up a lame packet of these overpriced plastic rings?

Try the 5/16" ring? That's what worked on my '97.

If you slide it in, you should hear/feel a faint click. Once it clicks, keep pressure on the plastic ring and pull the flexible part of the fuel line off.

 

[waskly]

An O2 sesnor that is not reading properly WILL at times tell the PCM that bank 1 or 2 is running lean and you will get a code P0171 or P0174.

You need to stop misinforming people.

NO! it wont

you will get a code for o2 sensor lean not bank 1 lean.

also since this will help the owner, here show me where an o2 will cause a p0171 or p0174.

P0171 - System Too Lean (Bank 1)
The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1 , Powertrain Control Software, Fuel Trim for more information. Fuel System.

Fuel pressure regulator (leaking, faulty).

Fuel filter plugged, dirty.

Fuel pump (weak, check valve leaking).

Leaking/contaminated fuel injectors.

Low fuel pressure or running out of fuel.

EVAP canister purge valve leaking (when the canister is clean).

Fuel supply line restricted.

Fuel rail pressure sensor (incorrect reading).

Ethanol content in the fuel

Air Induction System.

Air leaks after the MAF.

Vacuum leaks.

PCV system (leak or valve stuck open)

Improperly seated engine oil dipstick.

Air induction turbulence due to incorrect air filter.

Exhaust System.

Exhaust leaks before or near the HO2Ss (exhaust manifold gasket, mating gaskets)

EGR system.

Vacuum hose disconnected on EGR System Module (ESM) applications

EGR valve tube/gasket leak

EVR solenoid vacuum leak

Secondary Air Injection.

Damaged/malfunctioning secondary air injection system (mechanically stuck valve).

Air Measurement System.

MAF sensor (contaminated, damaged, or faulty)

where does it even remotely say o2 sensor?

this is an o2 sensor lean code.

P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean

this is an o2 problem nothing more.

 

[1998Explodasport]

NO! it wont

you will get a code for o2 sensor lean not bank 1 lean.

also since this will help the owner, here show me where an o2 will cause a p0171 or p0174.



where does it even remotely say o2 sensor?

this is an o2 sensor lean code.



this is an o2 problem nothing more.

Are you really that dumb?? If an O2 sensor is not reading properly it can set a bank 1 or 2 lean code (P0171 or P0174). When an O2 sensor goes bad it doesn't always set an O2 sensor code. This is why some of us actually have to diagnose problems and not just go by the code.

It is possible that his vehicle is actually running lean on bank 1 but at the same time he could have a failing O2 sensor. I don't care what you have read or where you learned what you think you know but from years of experience I can tell you that a failing O2 sensor can set that code.

 

[waskly]

Are you really that dumb?? If an O2 sensor is not reading properly it can set a bank 1 or 2 lean code (P0171 or P0174). When an O2 sensor goes bad it doesn't always set an O2 sensor code. This is why some of us actually have to diagnose problems and not just go by the code.

It is possible that his vehicle is actually running lean on bank 1 but at the same time he could have a failing O2 sensor. I don't care what you have read or where you learned what you think you know but from years of experience I can tell you that a failing O2 sensor can set that code.

no but you clearly are.

a bad o2 will not set a p0171 or p0174 PERIOD

you would need both o2 sensors to go bad at the same time yet still have a normal reaction time. which is impossible.

p0171 / p0174 part store guy... btw you get a commission selling o2 or something i dont know about? means the injectors are at max fuel dump according to the maf reading, yet theres too much o2 in the exhaust. PERIOD this is all that means.

what it does mean is a low fuel pressure, inconsistent fuel delivery bad injector, or air is getting past the maf into the intake when the burn happens it had more air then fuel to make the air / fuel ratio.

it has jack **** to do with a bad o2.

a o2 sensor will never set a p0171 / p0174 EVER!

a bad o2 will do one of 2 things only well 3 but the 3rd is a non start condition. it will a not switch, which means it dont read air. it will always set a code. due to the basics of odb2 and how it works that o2 will get tested first prior to a p0171/p0174

 

[BigRondo]

 

[1998Explodasport]

no but you clearly are.

a bad o2 will not set a p0171 or p0174 PERIOD

you would need both o2 sensors to go bad at the same time yet still have a normal reaction time. which is impossible.

p0171 / p0174 part store guy... btw you get a commission selling o2 or something i dont know about? means the injectors are at max fuel dump according to the maf reading, yet theres too much o2 in the exhaust. PERIOD this is all that means.

what it does mean is a low fuel pressure, inconsistent fuel delivery bad injector, or air is getting past the maf into the intake when the burn happens it had more air then fuel to make the air / fuel ratio.

it has jack **** to do with a bad o2.

a o2 sensor will never set a p0171 / p0174 EVER!

a bad o2 will do one of 2 things only well 3 but the 3rd is a non start condition. it will a not switch, which means it dont read air. it will always set a code. due to the basics of odb2 and how it works that o2 will get tested first prior to a p0171/p0174

Like I said dude you're an idiot if you don't think an O2 sensor can set a P0171 or P0174.

 

[waskly]

Like I said dude you're an idiot if you don't think an O2 sensor can set a P0171 or P0174.

w/e i'm done education a retard that cant understand how the system works.

go spend 400 bux on 02 sensors then 225 to diag the real problem.

 

[1998Explodasport]

You proved over and over again that you don't understand how the system works, I already know how it works.

 

[waskly]

You proved over and over again that you don't understand how the system works, I already know how it works.

i used to see 50-70 weekly vehicles for 171/174 and 1/2 of them had lol brand new o2s never fixed it.


but i know you know better, the auto zone dude told you. yet i think i even copied out of the ford pc/ed everything that can cause a p0171/p0174 and your still too stupid to understand that o2 will not set a p0171/p0174.

and recent flavor of the month is 1151... which is an o2.