Question about 1995 Ford Contour

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1995 ford contour with fuel injector electrical problem car will not idle . Changed o2 sensor and mass air sensor possible electrical problem in wiring to injectors ??

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Check IAC operation will it idle with the AC on

Posted on Jun 06, 2010

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Low idle & vibration at idle


I don't know if this will help. Had a similar problem with a 99 Blazer.
Would drop to between 300 and 500 rpm at stop signs and red lights, would stall and shake.
Did all the same checks, replaced mass air flow sensor, replaced cam sensor, cleaned the fuel injectors but the problem was still there.
Replaced both #1 and #2 O2 sensors in the exhaust pipes and now the vehicle runs fine. The idle is back to a steady 750 rpm in all stopping conditions. The Mass air flow sensor and Cam position sensor get information from the O2 sensors.

Apr 10, 2014 | Ford Transit Connect Cars & Trucks

2 Answers

Code p0171 on 98 ford ranger


Well code 171 means the O2 sensor is telling the computer the fuel mixture is too lean and the computer can not make it go rich by increasing on time for the injectors.
The problem could be the O2 sensor, or low fuel pressure, or several other factors.

Feb 21, 2013 | 1998 Ford Ranger SuperCab

1 Answer

I have a 95 ford contour can't get any spark . changed the spark plugs, fuel pump, and fuel filter, and air filter.


I'd suggest getting a chilton or Haynes book for your car first. Very handy! If no spark, you can test the coil with an ohmmeter, and test wires to it. Another possibility is wires to crankshaft position sensor shorted, or sensor is bad. This sensor tells computer when to fire, and if bad, you get no spark situation. Also check any fuses that have to do with ignition.

Jul 22, 2012 | 1995 Ford Contour

2 Answers

What does error code p0172 and p0174?


P0172 - Fuel Injection System Too Rich Bank 1 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Possible causes - Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connec
Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.



P0174 - Fuel Injection System Too Lean Bank 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Possible causes - Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection
Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem. Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.

Feb 21, 2011 | 1998 Ford Expedition

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

1 Answer

Engine rough idle. code p1131. replaced o2 sensor.


vacuum leak in PVC line or clogged PVC. its a leak after the map sensor. o2 sensor is correcting for a lean condition so its adding fuel to your car when the o2 sensor detects the extra air.

May 15, 2010 | 2000 Ford Contour

3 Answers

I have a 1995 ford taurus engine stalls when idling and smells of gas when accelerating it bucks. Changed fuel filter, could it be mass air flow sensor?


Start with smaller problems and check the fuel pressure regulator, the mass air flow sensor for these vehicles is pretty pricy. Is the check engine light on? If so, head to your nearest auto zone and have them check for trouble codes. If the check engine light isn't on, its not likely your mass air flow sensor

Jul 09, 2009 | 1995 Ford Taurus

2 Answers

The car stalls at idle and when stopping.


Sounds to me like an O2 sensor, i had a similar problem with my Ford Probe GT. Luckily my car was a 5 speed so i just kept my foot on the gas a bit and put my car into neutral as i was slowing down or coming to a stop. If you're car is automatic I would not suggest doing neutral drops.. you'll cause more damage.

Jul 30, 2008 | 1995 Ford Contour

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