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I'm not getting any power on my take off i reach 2 and a half rpm at take off
1999 Mercury Mountaineer

I'm not getting any power on my take off I reach 2 and a half rpm at take off

(1999 Mercury Mountaineer)
And it hesitate at about 50mph. Your help is needed and appreciated. May Good bless
1 answer & 2 comments
Popular Answer
on November 23, 2014
Clogged Catalytic converter
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on November 26, 2014
How do I unclog it? Any suggestion
on November 26, 2014
First, i would suggest removing the down stream oxygen sensor (after the Catalytic converter) to check that the air flow is certainly restricted.

After proving that is the case here, you really should replace the catalytic converter, otherwise you will always have a faulty reading on your oxygen sensors, and the pcm will not properly adjust your air/fuel ratio. (Without replacing the catalytic converter the engine will run rich and SES light on the dash will remain on)

** At your own discretion if you choose not to replace, you can drop the Y-pipe out of the vehicle, then push a pry bar down into the exhaust pipe to break out the insides of the catalytic converter (break the honeycomb like material out of the inside). After doing so ensure all debris has been blown out of the Y-pipe to avoid clogging any other parts of the exhaust, and then put the Y-pipe back into place.
General Diagnosis
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on November 23, 2014
Clogged Catalytic converter
Sign in to reply
on November 26, 2014
How do I unclog it? Any suggestion
on November 26, 2014
First, i would suggest removing the down stream oxygen sensor (after the Catalytic converter) to check that the air flow is certainly restricted.

After proving that is the case here, you really should replace the catalytic converter, otherwise you will always have a faulty reading on your oxygen sensors, and the pcm will not properly adjust your air/fuel ratio. (Without replacing the catalytic converter the engine will run rich and SES light on the dash will remain on)

** At your own discretion if you choose not to replace, you can drop the Y-pipe out of the vehicle, then push a pry bar down into the exhaust pipe to break out the insides of the catalytic converter (break the honeycomb like material out of the inside). After doing so ensure all debris has been blown out of the Y-pipe to avoid clogging any other parts of the exhaust, and then put the Y-pipe back into place.

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