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P0171 in 3.8 SC
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LoudImpala
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PostPosted: Sat Sep 17, 2011 4:13 pm    Post subject:  P0171 in 3.8 SC Reply with quote

So I was greeted today by my check engine light as I got back home from a friends house. Passed my driveway and kept going down the street to the Autozone to get my car scanned. Its throwing P0171 indicating lean on bank 1.

What's the most common problem here? I've read MAF and O2 so far, but wondering what seems to be the most common cause.

I planned on changing my oil and fuel filter this weekend anyways, and have a new pcv to put in also. Will probably throw a can of seafoam in the gas too, as its also time for that.

The car has just over 80,000 miles now, and is starting to burn oil a little bit. I'm using castrol edge full synthetic with a K&N oil and air filter. It Burns about a half to three quarters of a quart every 4-5000 miles. Is this normal for this mileage, or could something else be wrong?

Can anyone tell me where the heck the pcv is on this car?

Loud
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00impala123
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PostPosted: Sat Sep 17, 2011 6:54 pm    Post subject:   Reply with quote

http://macgp.clubgp.com/howto/pcv/pcv.html

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98ss
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PostPosted: Sat Sep 17, 2011 7:19 pm    Post subject:   Reply with quote

Thats not a lot of oil to burn in that amount of time. I wonder if your egr valve is starting to stick and your lower intake gaskets are starting to go.
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LoudImpala
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PostPosted: Sat Sep 17, 2011 7:32 pm    Post subject:   Reply with quote

98ss wrote:
Thats not a lot of oil to burn in that amount of time. I wonder if your egr valve is starting to stick and your lower intake gaskets are starting to go.


I hope not. Both LIM gaskets and the right valve cover gasket were replaced in March 2009 under warranty. Based on the invoice sent to warranty company, that's an expensive fix. Sad

Loud
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00impala123
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PostPosted: Sat Sep 17, 2011 7:43 pm    Post subject:   Reply with quote

LoudImpala wrote:
98ss wrote:
Thats not a lot of oil to burn in that amount of time. I wonder if your egr valve is starting to stick and your lower intake gaskets are starting to go.


I hope not. Both LIM gaskets and the right valve cover gasket were replaced in March 2009 under warranty. Based on the invoice sent to warranty company, that's an expensive fix. Sad

Loud


At the dealer i believe its usually upwards of 800 or more. Most shops would charge in the neighborhood of 450-600 depending on area n stuff.

You can do it yourself for right around 180 i think is what it cost me. I took my time with it and cleaned everything really well and it took me about 8 hours of relaxing and taking my time. It can be done in around 4 if you need it to be though.

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LoudImpala
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PostPosted: Sun Sep 18, 2011 11:42 am    Post subject:   Reply with quote

Well, I got some maf cleaner and sprayed out the sensor real good. I'm sitting here ticked off as I let my oil drain, for two reasons.

1. I cannot change my fuel filter. The hard line fitting is rusted so bad it wont budge, and I've stripped the bolt just a bit trying to get it off.

2. It seems I'm not burning oil, but leaking slightly around the oil pan gasket. Evil or Very Mad stupid Pittsburgh winters and all that salt!

Will be taking it for a drive shortly to see if cleaning the maf did any good.
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impalafirst
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PostPosted: Sun Sep 18, 2011 12:11 pm    Post subject:   Reply with quote

I stripped my fuel filter nut a couple of weeks ago and just forgot about it until now. Dorman makes a quick fix lenth of tubing and all you need is a fuel line cutter.
Here is a link to the repair kit. Ordering mine today, thanks for reminding me.
http://www.summitracing.com/pa.....refilter=0
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LoudImpala
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PostPosted: Sun Sep 18, 2011 12:38 pm    Post subject:   Reply with quote

impalafirst wrote:
I stripped my fuel filter nut a couple of weeks ago and just forgot about it until now. Dorman makes a quick fix lenth of tubing and all you need is a fuel line cutter.
Here is a link to the repair kit. Ordering mine today, thanks for reminding me.
http://www.summitracing.com/pa.....refilter=0


Interesting. How does the fuel line part mate up to the existing fuel line?

Let me know how it works for you.

LC
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billy101
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PostPosted: Sun Sep 18, 2011 2:23 pm    Post subject:   Reply with quote

LoudImpala wrote:
Well, I got some maf cleaner and sprayed out the sensor real good. I'm sitting here ticked off as I let my oil drain, for two reasons.

1. I cannot change my fuel filter. The hard line fitting is rusted so bad it wont budge, and I've stripped the bolt just a bit trying to get it off.

2. It seems I'm not burning oil, but leaking slightly around the oil pan gasket. Evil or Very Mad stupid Pittsburgh winters and all that salt!

Will be taking it for a drive shortly to see if cleaning the maf did any good.


I thought I was burning oil as well (half a quart in 3500miles) but I did some further inspection and I'm leaking oil from my rear valve cover gasket and my oil pan gasket. I'm thinking of pulling the motor over christmas vacation and doing those few gaskets...

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98ss
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PostPosted: Sun Sep 18, 2011 2:54 pm    Post subject:   Reply with quote

After you get the quick clip off from the back grip the nut with a pair of vice grips and instead of turning the nut, unscrew the filter. Screw the filter on and connect back up and your good to go.
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billy101
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PostPosted: Sun Sep 18, 2011 3:03 pm    Post subject:   Reply with quote

98ss wrote:
After you get the quick clip off from the back grip the nut with a pair of vice grips and instead of turning the nut, unscrew the filter. Screw the filter on and connect back up and your good to go.


Some PB Blaster or WD40 would aide in the removal as well.

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2001 Impala LS 3.8 - 118,510 miles. 9/2/2011. RIP - 11/12/2011
2010 Malibu LTZ 3.6 - 16,014miles. 8/20/2011.
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impalafirst
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PostPosted: Sun Sep 18, 2011 3:06 pm    Post subject:   Reply with quote

The Fuel Line Repair kit works by you cutting off the end of the fuel line with the nut at a point you decide. The repair piece takes its place and has a nut to screw on your new filter.The quick disconnect side stays intact just disconnect it from the old filter. Thats about what I know not having done it yet.
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LoudImpala
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PostPosted: Mon Sep 19, 2011 8:51 am    Post subject:   Reply with quote

Well, after cleaning the MAF real good, changing the oil, filling up with 93 and dumping a can of seafoam in the tank, my check engine light finally went off on my way to work this morning.

Now to tackle the fuel filter problem and my oil leak. I wish I had the k.ow how to pull the engine. Unfortunately, I'll probably end up having to pay for the oil pan gasket change, as I understand that either the engine has to be pulled or the suspension has to be dropped to get at the oil pan on this car.

Loud
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impalafirst
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PostPosted: Mon Sep 19, 2011 12:51 pm    Post subject:   Reply with quote

Sounds like you have a wise plan. Do what you can and give the more complicated to someone else.
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LoudImpala
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PostPosted: Mon Sep 19, 2011 8:19 pm    Post subject:   Reply with quote

impalafirst wrote:
Sounds like you have a wise plan. Do what you can and give the more complicated to someone else.


True, but unfortunately, more complicated usually = more expensive to have someone do.

Loud
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