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1996 ford escort wagon with 1.9 engine. 40,000 org. miles. engine surges at 60,70 mph going downhill on expressway. no issues on hard pull.

Also, somewhat rough idle, but no misses. also, with AC on, compressor cycles often, every 6,8 seconds but blows very cold air.

1 Answer

Steven Brandon

Master 462 Answers
Posted on Jun 10, 2017

Steven Brandon

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Joined: Jun 25, 2010

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It could be the throttle position sensor, MAP Sensor, or Mass Airflow Sensor (MAF) Symptoms of Bad or Failing Mass Airflow Sensor YourMechanic Advice
Symptoms of Bad or Failing Throttle Position Sensor
Symptoms of Bad or Failing Manifold Absolute Pressure Sensor MAP Sensor...

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Symptoms of Bad or Failing Throttle Position Sensor

yourmechanic.com

Common signs include lacking power when accelerating rough or slow idle stalling inability to shift up and the Check Engine Light coming on

Symptoms of Bad or Failing Manifold Absolute Pressure Sensor MAP Sensor...

yourmechanic.com

Common signs of manifold absolute pressure sensor problems include excessive fuel consumption lack of power and failing an emissions test

Symptoms of Bad or Failing Mass Airflow Sensor YourMechanic Advice

yourmechanic.com

Common signs of problems with mass airflow sensor include running rich at idle or lean under load decrease in fuel efficiency and rough idles

Testimonial: "thank you for taking the time to answer my escorts issue. I will follow up with a certified mechanic.Your advice very helpful. Thanks again !"

Steven Brandon Jun 12, 2017

You are very welcome, I wish I could have helped further.

3 Related Answers

Anonymous

1118 Answers
Posted on Apr 19, 2009

SOURCE: 89 Wagoneer drives rough

The thing to do now is a fuel pressure test pump could be weak just a few pounds under the recamended pressure will do that weather its mechanical or electrical . Is there a filter in the carb. wear fuel fine hooks? If none of this is an issue at least you can eliminate fuel deliverly as the problem.

Anonymous

77 Answers
Posted on Nov 27, 2010

SOURCE: On 2002 Ford Escort ZX2,

make sure coolant level is normal if its full you may have a thermostat thats come apart sounds like your low on coolant though

No_ky

59 Answers
Posted on Sep 11, 2009

SOURCE: AC cycles compressor on and off at about 6 or7

Chech AC for the gas and pressure (check AC pressure switch)Refill if needed.

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