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My 2001 navigator, idels erractaly, changed spark plugs, cleaned O2 sensor rear, can not gain access to the front O2 sensor. any ideas?

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Most likely cause bad throttle position sensor. Second would be idol air control sensor. Pull the codes in the computer to verify.

Posted on Mar 26, 2011


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3 Answers

Where can I find the oxygen sensors on a Ford Focus 2001? All help welcome

They are always on the exhaust pipe. Follow it down from the exhaust manifold all the way to the rear. Some cars have only one sensor and others may have up to four.

Mar 06, 2015 | 2001 Ford Focus

1 Answer


P1132-- Lack of HO2S11 Switch ,sensor indicates lean

Many things could cause the code

The code is for the front or upstream Oxygen Sensor
on the right side of the motor. That is the 11 in the code
description. One for front sensors & one for right side

I would change any O2 Sensors on all your vehicles
that have 100,000 miles on them

Only change the ones before or in the exhaust converter,
not the rear or monitors

You don't need a repair shop for that

Buy from Rock Auto.Com
I would get NGK/NTK or Bosch

If you get a little longer wire, just coil &
wire tie away from exhaust pipe
The connector will be white vs: the original
blue or green,same thing,same vendors

That is a preventive maintenance item like
spark plugs.

Do the spark plugs every 3 years & clean the MAF Sensor
every year (CRC MAF Cleaner)

Nov 14, 2012 | 2001 Ford Taurus

1 Answer

Skipping while driving

Have you changed the spark plugs every 3 years or
not over 60,000 miles?

Have you changed the front ( 2) O2 Sensors at 100,000
miles,the ones closest to the engine?

Have you Cleaned the MAF Sensor once or twice a year?

Replaced the Air Filter & Fuel Filter--every 3 years?

Do you have an OBD light on dash & a misfire code stored?

Jul 13, 2011 | 2004 Lincoln Navigator

1 Answer

2000 mercury mountaineer 5.0 idel roung at idel at higher rpms runs fine

Air Filter-clean or replace
Clean MAF Sensor--CRC MAF Cleaner
Clean throttle plate-CRC Throttle Body Cleaner
Spark Plugs- replace every 70,000 miles
Check -for vacuum leaks on ALL ducting and hoses
Replace front 2- O2 Sensors-ones closest to motor ,every 100,000 miles

Have TPS Sensor --tested with an oscilloscope for opens

Mar 06, 2011 | 2000 Mercury Mountaineer

2 Answers

2001 V 10 ford excursion experienced rough idel and constant miss, have changed fuel filter, plugs, coils, fuel injector and the computer, still the same, any ideas?

As long as everything you've mentioned is in good working condition I would test your O2 sensors and your mass air flow sensor both could cause a rough erratic idle and even a miss if the O2 sensors send a bad signal to ecu which would affect fuel trim ratio

Feb 02, 2011 | Ford Excursion Cars & Trucks

2 Answers

2001 Navigator diagnostic plug not working.....any ideas?

I am assuming that you can't get a scan tool to work? Check all your fuses. The diagnostic connector usually uses the same power as the lighter or powerpoint. Fuse #3 20 amp on interior fuse panel

Mar 31, 2010 | 2001 Lincoln Navigator

2 Answers

Changed both o2 sensors and front catalytic converter 2001 v6 tacoma 4wd dbl cab check engine light came back on initial scanner diagnosis catalytic efficiency bank 1 any ideas? could it be back converter

if the converter was bad the engine would loose power . alot of times the check engine light will come on for the emmitions check youre gas cap some vehicles will send a signal to the computer if the co is not right and by changing the gas cap solved the problem .

Nov 14, 2009 | 2001 Toyota Tacoma

1 Answer

How to locate and change the oxygen sensor on an audi a6 2002 front passengers side?

oxygen sensors are always on your exhaust right before the catylitc converter. some cars need a special socket to take the out. to gain access to the sensor you will have to get under the car most likely.The sensor looks similar to a spark plug but ist not one.

Nov 05, 2009 | 2001 Audi A6

2 Answers

Cannot find but 4 spark plugs in 1998 Cadillac sts

4 plugs in the front 4 in the back it is necessary toi remove some components to gain access to the rear bank of plugs

Jun 07, 2009 | 2001 Cadillac Sts

4 Answers

My 2001 Hyundai Accent shakes

It might be bad O2, MAF sensor, deposited throttle body, bad spark plugs/wires/distributor cap, clogged fuel injectors or air filter. Shacking usually adressed to uneven detonation in cylinders. Start from cleaning injectrors (injectro cleaner), scanning the trouble codes if any at Autozone store (free of charge), and tune up service (changing spark plugs, wiring, distributor cap)
Hope that helps
Good Luck

Feb 26, 2009 | 2008 Hyundai Accent

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