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Old 07-29-2004, 06:13 PM
erick0071 erick0071 is offline
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Car looses power when A/C is on.

As the title says ...whenever the a/c is on the car looses power. it will accelerate slower and it will gear into shift roughly. when the a/c is off the bump between gears isn't so noticeable. Is something i can do? i replaced the air filter and it has a new motor .(Escort 94 1.9 Automatic)
It also has the check engine light on..codes :

172-lack of HEGO switches,indicates lean

332-EGR valve opening not detected


could this be related to the problem? How about some new spark plugs?

any thoughts?
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Old 07-29-2004, 11:25 PM
vette_7t9 vette_7t9 is offline
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Re: Car looses power when A/C is on.

no you cannot do anything about it. the AC just robs the engine of power like a thief, just like auto trans. so dont expect to blast your way on the highway with AC on. I was a bit disappointed wen i turn on the AC on my escort like last week cuz i was so used to the power of non AC......
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Old 07-30-2004, 09:30 AM
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Jet-Lee Jet-Lee is offline
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Re: Car looses power when A/C is on.

Take it to a dealer to have those codes checked out. 172 sounds like you have an O2 sensor going bad, which can affect performance/mileage. 332 sounds like either you EGR valve, sensor, or pump (solenoid thingy?). A dealer can tell you for sure, but it might cost about 60-80 bucks.
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