my first CEL... how do i fix it???? - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 01-11-2007
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my first CEL... how do i fix it????

EDIT:CODES ADDED ON 1/12/07-- P0171 AND P0174


my first CEL came on last night as i was driving home... went to the ford dealer today and had my friend pull the codes for me to see what it was...

he gave me two codes.. i've got them written down on a piece of paper, but left it in my truck.

from what i remember, he said my truck was running lean? 2 banks?? he said there was a few things that it could be... i'd have to hook it up to the machine to find out what is actually wrong...

anyone have any idea what i should expect to be hearing??? i have no money right now... so of course this would happen to me now...

i'll go get the paper with the actual codes in a little bit, so you can know exactly what they are...

Last edited by Strider0O0; 01-12-2007 at 04:51 PM.
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Old 01-11-2007
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o2 sensors i believe..
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Old 01-11-2007
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welll.....if you had a 4.0 OHV i could tell you EXACTLY what the problem is....but since you have the SOHC i can't help for sure.........BUT.....on the OHV, the upper intake gaskets is a common problem.....
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Old 01-11-2007
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my guess would also be the 02 censors.
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  #5  
Old 01-12-2007
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both banks running lean is normally a vacuum leak of some sort, it could be a intake gasket. or the tube for the pcv valve, or maybe the pcv valve came out?

ill let someone that really knows chime in.
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Old 01-12-2007
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  #7  
Old 01-12-2007
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Quote:
Originally Posted by 5speedin2.3
both banks running lean is normally a vacuum leak of some sort, it could be a intake gasket. or the tube for the pcv valve, or maybe the pcv valve came out?
that's basically the same thing my friend said when i asked him what might be wrong...
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  #8  
Old 01-12-2007
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Check for vacuum leaks, clean the MAF sensor, make sure the fuel pressure and fuel delivery systems are OK.

Your aftermarket K & N intake is something I would closely at.

Like the OHV, the SOHC is also somewhat prone to leaky intake gaskets.
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  #9  
Old 01-12-2007
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put a piece of black electrical tape over the light... problem fixed
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  #10  
Old 01-12-2007
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here's the codes....

P0171
P0174


Quote:
Originally Posted by gatorblue92
put a piece of black electrical tape over the light... problem fixed
nah no need, my friend cleared it for me and told me to make sure to get it fixed soon.
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  #11  
Old 01-12-2007
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Quote:
Originally Posted by Strider0O0
here's the codes....

P0171
P0174




nah no need, my friend cleared it for me and told me to make sure to get it fixed soon.
thats bank1 and bank2 running lean.
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  #12  
Old 01-12-2007
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Quote:
Originally Posted by 5speedin2.3
thats bank1 and bank2 running lean.
yeah thats what my friend said.



what's the worst case senario i'm looking at.. $$$$ wise.... and what would the best case senario be??? i have no money at all right now... so this is gonna hurt the wallet either way.
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  #13  
Old 01-12-2007
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well first things first, check the tube for the PCV valve for cracks or any other damage.
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Old 01-12-2007
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Quote:
Originally Posted by 5speedin2.3
well first things first, check the tube for the PCV valve for cracks or any other damage.
it's dark out, and i finally just got clean, so that'll have to wait for tomorrow, lol.
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  #15  
Old 01-28-2007
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Do you have any signs of any thing being wrong? Fuel Economy, Sputtering stalling hesitation ,so on.
Also check the vac hoses for cracks or loosness at the fittings.
Next is checking the wires for cracks and/or splits or melt.

Then you want to let your friend know. He will be able to help the most because he has the most knowlege with YOUR truck because he has seen it and checked it out. And he is also a FORD Tech. Let us know too though.
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  #16  
Old 01-28-2007
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Quote:
Originally Posted by htvfd460stx
Do you have any signs of any thing being wrong? Fuel Economy, Sputtering stalling hesitation ,so on.
Also check the vac hoses for cracks or loosness at the fittings.
Next is checking the wires for cracks and/or splits or melt.

Then you want to let your friend know. He will be able to help the most because he has the most knowlege with YOUR truck because he has seen it and checked it out. And he is also a FORD Tech. Let us know too though.
it's wierd.. i've actually gotten better gas mileage over the past couple of weeks since the CEL has been on, lol. the truck runs completely normal, no stalling or hesitation, etc...

it sucks, i've been busy for the past couple of weeks, and haven't had time to pull the truck into the shop and take a look at everything... i just hope i'm not doing any further damage by putting off getting it fixed. i just need to find the time to fix it.
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  #17  
Old 01-28-2007
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My two cents are coming in now. First things first, from your sig it looks like you have a K&N FIPK Intake? If thats the case clean the MAF and clear the codes see if they return. A O2 sensor is a possible cause but not sure why everyone immediately jumps on them. Get some carb clean and when you start the engine cold spray around the intake area to see if the engine idles higher or starts to run rough, if it does you have a vacuum leak. Fuel pressure could also be the cause, when is the last time you changed the fuel filter?
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  #18  
Old 01-28-2007
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Possible dirty MAF from over oiling a K&N filter, also check PCV hose to make sure it didnt colapse.
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  #19  
Old 01-28-2007
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Quote:
Originally Posted by 04lvl2
My two cents are coming in now. First things first, from your sig it looks like you have a K&N FIPK Intake? If thats the case clean the MAF and clear the codes see if they return.
i've had the K&N for a few years now. last time i cleaned the filter was maybe 3 months ago, sometime after halloween. i'll clean the MAF as soon as i can. i've never cleaned it before, so i guess it can't hurt to clean it anyways.

Quote:
A O2 sensor is a possible cause but not sure why everyone immediately jumps on them. Get some carb clean and when you start the engine cold spray around the intake area to see if the engine idles higher or starts to run rough, if it does you have a vacuum leak. Fuel pressure could also be the cause, when is the last time you changed the fuel filter?
someone talked to me a week ago on AIM about checking the vacuum lines, but i forget who it was. where would i look to see if they're alright?

and the fuel filter was replaced maybe a year ago. i'd say it has about 13,000 miles on it, give or take 1,000...


Quote:
Originally Posted by IR0NS1N
Possible dirty MAF from over oiling a K&N filter, also check PCV hose to make sure it didnt colapse.
would the codes come up right away if i over oiled the filter? like i mentioned earlier in this post, i cleaned and reoiled the filter a few months ago. the CEL just came on 2 weeks ago.

and where would the PCV hose be located?? i'd like to take a good look at everything you guys have mentioned
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  #20  
Old 01-28-2007
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If you just cleaned the filter and reoiled it that would be the first place that I would start, cleaning the MAF that is. I deal with this on a regular basis at work with the oil from the K&N and either the P0171/P0174 or P0172/P0175 codes.

Whereever you spray the carb clean and it changes the idle then look where you just sprayed.
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  #21  
Old 01-30-2007
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???????
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  #22  
Old 01-30-2007
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Quote:
Originally Posted by 4X2XLT
o2 sensors i believe..
you have no clue do you?

so you recomend he should go buy 2 new o2 sensors because there throwing codes?????
the problem is he has a vacuum leak and the o2 sensors see it and are adjusting the fuel trim to make up for it (the vacuum leak)

oil on the MAF could result in all sorts of codes but more so a rough runing engine thats hard to start.
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  #23  
Old 01-30-2007
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Quote:
Originally Posted by 04lvl2
If you just cleaned the filter and reoiled it that would be the first place that I would start, cleaning the MAF that is. I deal with this on a regular basis at work with the oil from the K&N and either the P0171/P0174 or P0172/P0175 codes.
but i didn't just clean the filter... it's been a couple of months.



again though, i guess i'll clean the MAF and see if that does anything... if not, i'll move onto looking for vac leaks, etc..
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  #24  
Old 01-30-2007
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that was me you talked to on aim. lol.
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  #25  
Old 01-30-2007
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Quote:
Originally Posted by 5speedin2.3
that was me you talked to on aim. lol.
heyyy there ya are!!! lol. i couldn't for the life of me remember who i had talked to, lol.

hopefully i can get to my truck thursday afternoon and take a look at everything.


what product should i buy to clean the MAF?? i know theres got to be a how-to somewhere around here......
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