1998 Nissan Altima, Trouble code P0171, Ongoing problem

jtakesh
35

Asked by jtakesh Nov 19, 2012 at 08:13 AM about the 1998 Nissan Altima GXE

Question type: Maintenance & Repair

As before the P0171 code keeps popping up, I changed the front Oxygen Sensor, Air Mass Mater, fuel filter & finally found the PCV valve, when I changed the PCV Valve the car ran much better and the code didn't come back up, but after a couple of days the car started running the same, poor rough idle, poor gas milage & and a gas/exhaust smell in the car. Could the PCV valve have clooged up so fast, possibly because of gunk in the line or where the valve plugs into?

3 Answers

Ronald Dopwell
265

how often do you change your Oil ? is there any Sludge in the Engine ? you may be looking at a lengthy overhaul of your engine internals if there is a Sludge buildup

2 out of 2 people think this is helpful.
Best Answer
jtakesh
35

There should not be any sludge in the engine, I or my son changes the oil once every 3 months and there is usually not 3,000 miles on it by that time, this engine was replaced about three years age because the timing chain broke and trashed the original engine, the replacement engine was used, about 68,000 miles on it, when installed, the oil was changed @ 1,000 miles then at a maxium of 3,000 there after, can't understand if the engine is sludged up, I'll take the PCV valve out again tonight to see if it'e clogged up, if it is, I guess there's a problem.

Robert Lavallee
2,275

look vor vacuum leaks or intake or exhaust leaks. p0171 lean means theres too much oxygen and most likely is pulling air in at the intake manifold gasket or if you're smelling it inside car could be exhaust leak which may be sucking air in there causing the oxygen sensor to read too much oxygen and setting codes. so inspect intake and exhust for leaks.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 1998 nissan altima PO 300 3 answers

    I have a 98 Nissan Altima that has intermittently give me a code PO300. I have replaced the plugs, wires, distributor and cap. Still has the same problem. Don't know where to go from here.

    1998 Nissan Altima GXE

    -

    Maintenance & Repair

  • 1103 trouble code service reminder or problem 1 answer

    about every other month check eng light comes on with code 1103 says to take to dealer

    1998 Nissan Altima XE

    -

    Maintenance & Repair

  • Nissan Altima throws code P 505 1 answer

    98 Altima had total engine rebuilt. Head was warped, machined smoothed, runs great. Now engine light on, throws code P 505 and needs Ca. smog cert. Tech said it will be about $400.00. He let me kn...

    1998 Nissan Altima GXE

    -

    Maintenance & Repair

  • Can run Nissan Altima 2012 without I-Key 2 answers

    Hi, I have a 2012 Nissan Altima 2.5s. If I start the engine normally wit i-key in my pocket, then leave the vehicle running and get out. Then remove my i-key away from the vehicle and enter the agai...

    2012 Nissan Altima 2.5 S

    -

    Maintenance & Repair

Altima
Looking for a Used Altima in your area?
CarGurus has 74,334 nationwide Altima listings starting at $1,495.
ZIP:

Search Nissan Altima Questions

Nissan Altima Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,060
#2 tenspeed
tenspeed
Reputation 450
#3 Cassie Sapphire
Cassie Sapphire
Reputation 360
View All

Related Models For Sale

Used Nissan Maxima"
392 Great Deals out of 16,195 listings starting at $995
Used Honda Accord"
1,127 Great Deals out of 71,135 listings starting at $999
Used Toyota Camry"
1,381 Great Deals out of 75,197 listings starting at $1,200
Used Honda Civic"
776 Great Deals out of 57,687 listings starting at $1,500
Used Nissan Sentra"
518 Great Deals out of 36,376 listings starting at $1,499
Used Toyota Corolla"
1,067 Great Deals out of 52,876 listings starting at $1,800
Used Hyundai Sonata"
811 Great Deals out of 59,042 listings starting at $1,595
Used Chevrolet Malibu"
826 Great Deals out of 59,535 listings starting at $1,950

Used Cars For Sale

2015 Nissan Altima For Sale
124 Great Deals out of 44,902 listings starting at $14,500
2014 Nissan Altima For Sale
164 Great Deals out of 5,264 listings starting at $11,899
2013 Nissan Altima For Sale
249 Great Deals out of 6,600 listings starting at $8,999
2012 Nissan Altima For Sale
227 Great Deals out of 5,693 listings starting at $7,947
2011 Nissan Altima For Sale
66 Great Deals out of 1,755 listings starting at $6,208