performance problems when A/C on -- 5.4 EXPEDITION

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Jun 19, 2002 | 06:43 PM

momoney

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performance problems when A/C on -- 5.4 EXPEDITION

Is it just me or when you have the A/C on your EXP runs like #*@$!
I live in the AZ desert and have the A/C on all the time in the summer. From a stop I literally have to put the pedal on the floor to have any decent acceleration and it sounds like it's running extremely hard. Should I take to the dealership? -- I'm still under warranty.

2000 5.4 EXP
Poweraid
Airaid
Magnaflow

Jun 20, 2002 | 08:39 AM

Darthange

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From: Germantown USA

performance problems when A/C on -- 5.4 EXPEDITION

My 2001 5.4 runs fine here in Memphis. We are just getting in to the hot part of the season, but I hardly notice that the AC is running, it still as plenty of power. Good Luck.

Andy

Jun 20, 2002 | 12:06 PM

buzzard

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From: All over Texas

performance problems when A/C on -- 5.4 EXPEDITION

I'm not exactly sure what Airaids or PowerAids are, but if they are open element filters, you will be pulling in much "hotter" air which significantly reduces engine performance. I recently took my K&N filter out (inside the original box), replaced with a stock paper unit and noticed quite a bit of improvement in my acceleration. And it gets pretty hot and humid down here in Houston.

Nevertheless, I really feel a difference when the ambient temps get above 90. My Expy seems to run its very best when it's around 60-80 degrees outside.

Jun 20, 2002 | 01:29 PM

Acamar

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performance problems when A/C on -- 5.4 EXPEDITION

No problems here in south Jawjuh. I've got the 5.4L too.

Jun 20, 2002 | 06:03 PM

momoney

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performance problems when A/C on -- 5.4 EXPEDITION

Thanks,

That makes sense with the hotter air. I'm going to replace my open air filter with a boxed filter that pulls "cold" air from the fender well.

Jun 25, 2002 | 01:36 AM

uchump

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performance problems when A/C on -- 5.4 EXPEDITION

Ditto here in Phoenix....Every once in a while my 2000 5.4 4x4 will totally dog..Meaning I have to mash the gas all the way down to get it going. I have a KnN filter + flowmaster ....Plus, as soon as I put the K&N in I went from 13.5mpg to 11.9..???? go figure. I'm going to see what happens when I put the paper filter back in.

Aug 5, 2002 | 07:53 PM

momoney

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performance problems when A/C on -- 5.4 EXPEDITION

>Ditto here in Phoenix....Every once in a while my 2000 5.4
>4x4 will totally dog..Meaning I have to mash the gas all the
>way down to get it going. I have a KnN filter + flowmaster
>....Plus, as soon as I put the K&N in I went from 13.5mpg to
>11.9..???? go figure. I'm going to see what happens when I
>put the paper filter back in.

Take the K&N out and put in a Volant FIPK. It pulls cool air from the fender well . The K&N just pulls hot engine air which kills the performance

2000 XLT 5.4
Volant FIPK
Magnaflow exhaust
Granatelli Mass Air Sensor