[x-type] Engine code P0171/0174

Just pulled these codes from My 03 2.5l – System to lean on
bank 1 and system to lean on bank 2
In reading the posts they talk about ‘‘O’’ rings where are
these located?
Just had a quick look and the vacuum lines look to be OK!
however one of the lines goes down to some sort of switching
??system just left of the brake booster is this the location
of the :o: rings? also below that seems to be some sort of
vacuum reservoir.
I also pulled code P1000 which is a Jag code and in this
site it said to ingore this one.
Would appreciate any input.–
Ulster
Toronto Ont., Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

The O rings are fitted where the manifold joins the engine proper. These do
become hard after some time; they are easily available.

Gregory,
Victoria, British Columbia, Canada
1966 3.8 Mk 2, Pale Primrose
1992 Series III V12 Vanden Plas, Black Cherry
2002 X-Type, 5 sp. manual, Anthracite
2004 XJ8, Ebony
2005 X-Type Sportwagon, British Racing Green-----Original Message-----
From: owner-x-type@jag-lovers.org [mailto:owner-x-type@jag-lovers.org] On
Behalf Of Ulster
Sent: February-12-11 12:52 PM
To: x-type@jag-lovers.org
Subject: [x-type] Engine code P0171/0174

Just pulled these codes from My 03 2.5l – System to lean on
bank 1 and system to lean on bank 2
In reading the posts they talk about ‘‘O’’ rings where are
these located?

In reply to a message from Dr. Gregory Andrachuk sent Sat 12 Feb 2011:

Thank you I located them and changed the’‘O’’ rings below is a
good description from Pete on what to do. I did add a little
to clarify.--------------------------------------------------------

In reply to a message from Joey5383 sent Fri 1 Feb 2008:

If you still have codes p0171 and p0174, you need to have
the variable intake manifold valve O-Rings replaced. I just
had this problem and thanks to several forum members, was
able to solve this issue in an hour plus a trip to the dealer.
These valves are on the left (while looking under hood) of
the intake manifold. They are black, round, have an
electrical plug and are mounted to the manifold in a
vertical position and are held in place with 2 8mm bolts You
really can’t miss them. The codes represent extra air
thusly your engine will run leaner causing the cel to pop.
What happens is the O-ring shrinks with age. I bought the
new ones at the dealer for $4.80 each. I can even give you
the part number to order as I kept the bag they came in.
Also, under the plastic cover is your PCV breather hose. I
replaced mine as well because it had a nice 2 inch slice in it.
That cost me $21.60 or so from the dealer. Easy to replace.
Let me know if you need any step by steps or if you have any
questions.
Many of us wrench on our own cars and several members that
helped me will most certainly respond. My car is a 2002 2.5
sport.

The original message included these comments:

was a leased car. I started getting 0171 and 0174 codes. I
took


Pete’s X

Ulster
Toronto Ont., Canada
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In reply to a message from Ulster sent Sat 12 Feb 2011:

I had these codes recently on my 03 x 3.0l. Does this cause my mpg
to suffer? If so how? Other sites include cleaning the MAF and
cking the fuel pressure and o2 sensor. Most include the vac leaks-
Thx to all!–
The Brooks
Estero,FL, United States
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In reply to a message from Ulster sent Sat 12 Feb 2011:

In reply to your lean running the ‘o’ rings referred to could well
be the silicone rings on which the induction/intake manifold sits.
If you’ve had recent servicing which required the manifold to be
removed i.e spark plug change, the ‘o’ rings which effect a good
seal could have been ripped or pinched causing an air leak. It is
recommended that these are changed each time intake side is taken
off, however if treated with care they can be re-used.–
slacky
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In reply to a message from slacky sent Thu 17 Feb 2011:

Been a few days and several 100Klm’s and no repeat of the
codes the replacement ‘‘O’’ rings have done the job.
I have had no work done on the engine prior to the codes
popping up so it looks like the ‘‘O’’ rings may need replaced
every 130,000 klms Car has been great love it hope to push
it over 250,000klm in the next 3 years.–
The original message included these comments:

If you’ve had recent servicing which required the manifold to be


Ulster
Toronto Ont., Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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