Question about 2002 Mercury Villager

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Check engine lite came on the teck said it was a fuel sensor where do i find this on the car to replace it

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Oxygen sensor? You haver a front and rear. Usally just a wire broken. Need DTC Code from Autozone for free. Then we will solve issue.

http://groups.yahoo.com/group/villagerquest/

Posted on Oct 18, 2010

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1991 F 250 5.0 was running not now has good pressure at the fuel rails nothing thru injectors


It could be the "Main Relay" or no spark.
Some cars don't allow fuel to the engine if the computer senses "No Spark".
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Check engine lite, codes P0151, P0153, P1151, mechanic says incorrect voltage from PCM, replace PCM


CODE PO151 - HO2S - 21 BANK 2 SENSOR 1 CIRCUIT LOW INPUT. CODE PO153- HO2S BANK 2 SENSOR 1 CIRCUIT SLOW RESPONSE. CODE P1151 - LACK OF HO2S - 21 SWITCHING HO2S SIGNAL LOW INPUT. POSSIBLE CAUSES TO YOUR PROBLEM AIR INTAKE SYSTEM LEAKING VACUUM HOSES LEAKING OR DAMAGED.AIR LEAKS LOCATED AFTER THE MAF SENSOR MOUNTING LOCATION OR IN THE PCV SYSTEM. YOU COULD HAVE BASE MECHANICAL FAULT LIKE LOW CYLINDER COMPRESSION , VALVE TIMING OFF.HO2S CIRCUITS WET OR OILY CORRODED OR POOR TERMINAL CONTACT. HO2S SIGNAL CIRCUIT OPEN SHORTED TO GROUND SHORTED TO POWER OR THE SENSOR HAS FAILED. LOW FUEL PRESSURE OR VECHICLE DRIVEN UNTIL IT WAS OUT OF FUEL. BEFORE REPLACING PCM CHECK ALL VACUUM HOSES ON INTAKE MANIFOLD. REPLACE FUEL FILTER. CHECK YOUR SPARK PLUGS. IF SPARK PLUGS OIL COATED PROBLEM IN THE ENGINE ITSELF. YOU HAVE WORN PISTON RINGS, WORN VALVE GUIDES AND WORN VALVE SEALS. IF PCM WAS BAD YOU WOULD HAVE FLASHING CHECK ENGINE LIGHT CAR WOULD RUN POORLY.YOU WILL HAVE FAULT PCM CODE IF PCM FAILED. YOUR PROBLEM IN HO2S SENSORS AND THE ENGINE AIR FUEL MIXTURE.

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Hard starting, no power, idles rough, check engine lite code shows misfire on #1,#2 and #3 cylinders


check fuel pressure, check fuel pressure regulator, change fuel filter. If fuel pressure is low it could be a bad pump, a clogged filter, or a malfunctioning fuel pressure regulator. If all those check out, then check crankshaft and camshaft position sensors.

Jan 19, 2011 | 2001 Kia Spectra

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Replaced air/fuel sensor on 2002 toyota avalon check engine lite comes back on in seconds with same p1135 code, open circut air/fuel sensor circut,any idea how to fix this?


Hello a question to you did you disconect your battery while your were working on this problem??please advise i do belive i can asisit you.

Dec 30, 2010 | 2002 Toyota Avalon

1 Answer

I have a 2001 European specs VW Golf 1600/16V engine. I keep getting the check engine lite. The car would not start untilled I replaced the ERG valve, Knock sensor and the oxygen sensor. after replacing...


Replace the Airflow Meter, then take off all those parts you put on. If you have a scan tool, the long term fuel trim is probably %25+Which is definately an airflow meter, but it's definately worth trying it anyway, they've had such a problem w/ them you can get one for under $100 easy.

Jun 25, 2009 | 2001 Volkswagen Golf

1 Answer

96 Tacoma 4x4 2.7 engine cuts out randomly, like its trying to get air or fuel. just installed cold air intake, full tune up, fuel filter, mass air flow sensor, battery cable, hoses, tps(sensor), and...


dont look for air when the car cuts out its most likley spark or fuel when it cuts out ranomly its usually a sensor or relay that is faulty check fuel pump relay and camshaft or crankshaft sensors but first narrow it down to spark or fuel if possible also if check engine lite is on check codes

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