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Timing belt- A/C discharge, unexpected benefit

 
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Old 24 Sep 2012, 12:28 am
sanatanadharma's Avatar
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Default Timing belt- A/C discharge, unexpected benefit

When I had the timing belt changed, the mechanic discharged the A/C system to disconnect the lines. The reassembled system was latter recharged (naturally).

The unexpected benefit: Previously, when the A/C was used, the power drag was quite noticeable. Each time the compressor cycled on and off, the car seemed to shudder subtly.
Now, the A/C cycles nearly un-noticed. I think it was overcharged.
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Old 24 Sep 2012, 02:20 pm
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Default Re: Timing belt- A/C discharge, unexpected benefit

Possible that the A/C was over charged, but also likely your old timimg belt was stretched enough that the timing was off enough to make it run rough under load. But with the new belt everything is good.
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Old 25 Sep 2012, 10:02 pm
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Default Re: Timing belt- A/C discharge, unexpected benefit

I noticed recently that when the PT (2003 Limited N/A) is warm (sitting in a movie theater parking lot for two hours after driving it there on a hot day), when I first turn on the A/C--before putting the automatic trans in reverse, that I have a very slight sort of stumble ... just barely. So I take off, drive it a block or two, and the idle becomes perfect as I wait at stop lights, etc. No slight stumble at all.

I thought it was a bad low speed on my fan, but it wasn't.

I wonder if I'm overcharged. I had my A/C manifold replaced by the dealer a while back and perhaps when they recharged the system, they put too much in. Still, you'd think an overcharged system would blow out the excess.

Tim
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Old 26 Sep 2012, 05:55 am
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Default Re: Timing belt- A/C discharge, unexpected benefit

They replace any motor mounts when they did timing belt? They're usually bad, and that may have stopped shudder.
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Last edited by quicksilverdon; 26 Sep 2012 at 06:00 am.
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