PCV hose replacement frequency?
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PCV hose replacement frequency?
I have the error codes P0171 & P0174 for the second time in a year. The first time I cleaned the MAF sensor and replaced the fuel filter but still had major idling issues so took it to my favorite mechanic and they replaced the PCV hose. Now I'm having the same rough idling issue. Is it possible that the PCV hose needs replacing again? I know the mechanic said it's a very common issue on the V10 engines but twice a year?
FYI -- I know my jeep Cherokee inside and out but have very little knowledge of how to fix this F250 I bought.
FYI -- I know my jeep Cherokee inside and out but have very little knowledge of how to fix this F250 I bought.
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From: Kent Station, WA
What year truck? What's the mileage at? I would think the hose should be fine if actually replaced. On my 99 the hose under the throttle body was leaking. Once replaced it cleared a code. You may also want to think about replacing O2 sensors. I used the motorcrafts and it also helped. Sometimes they don't switch properly.
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Dang, I typed up a reply and then forgot to hit post.
It's a 2000 F250 SD XLT V10 with 102k miles. The PCV hose was replaced at about 99k miles.
What is the name of the hose under the throttle body and is it hard to change? I found a video of them pulling one off but not putting it back on. It didn't look like it was going to be easy to put back on.
How many o2 sensors are there?
It's a 2000 F250 SD XLT V10 with 102k miles. The PCV hose was replaced at about 99k miles.
What is the name of the hose under the throttle body and is it hard to change? I found a video of them pulling one off but not putting it back on. It didn't look like it was going to be easy to put back on.
How many o2 sensors are there?
Lead Driver
Joined: Mar 2013
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From: Kent Station, WA
The hose under the throttle body is fairly simple. Remove the plastic cover and the little elbow shaped hose sometimes cracks and causes lean codes. My truck has two oxygen sensors. If its a cali emissions vehicle there will also be a post cat one.
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Thanks. I bought the O2 sensor (front one) and pcv hose last night. Now need to wait until Saturday when there is more light to work on it. Looks like the O2 sensor should be fairly simple. The plug-in spot might be a little hard for me to reach but I'll figure it out.
I sure hope this works. I don't want to have to pay for a ton more repairs.
I sure hope this works. I don't want to have to pay for a ton more repairs.
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Oh my hell-o. Who designed how that O2 sensor goes in? Neither I or my neighbor could reach the end that clips in. He finally got the old one out with a pair of hose pliers I had. Then it took both of us using hose pliers one from the top and one from the bottom to get it back in. It took nearly two hours to do what should have been a very simple job. I sure hope I never have to replace that again.
Now crossing my fingers that it resolved the problem. It seemed to be idling better sitting in the driveway.
Now crossing my fingers that it resolved the problem. It seemed to be idling better sitting in the driveway.
Lead Driver
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From: Kent Station, WA
My arm was shoved in between the exhaust pipes changing my sensors. Lots of fun. Keep in mind there are two sensors in front, one for each bank.
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There are two up front? I was told there was one up front and one after the cat. I changed the one up front - passenger side just inside of the wheel well.
AND.......it did not fix the problem.
Where is the second one located at up front? And are they both considered upstream ones?
AND.......it did not fix the problem.
Where is the second one located at up front? And are they both considered upstream ones?
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You have two engine banks and two o2 sensors before the cat, one for each side.
There are also post cat o2 sensors that measure the difference between pre exhaust and post exhaust to determine if the cat is still good.
I have found that just replacing the sensors doesn't usually fix the job.
Usually it's something else such as a vacuum leak, misfiring cop, or bad plug that causes the o2 sensor to report.
Not the other way around.
Pull your OBD codes before spending more money on o2sensors. I'll bet a missing cop/cracked boot, etc.
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