Idle down when clutch in? - Ford Powerstroke Diesel Forum
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Old 03-31-2010, 05:56 PM
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Lightbulb Idle down when clutch in?

Hi guys,

I am new to the forum, have browsed a little bit while researching what type of truck to buy.

Tonight I just test drove a 2000 F250 7.3l, 6 speed manual, 4wd, 2"lift, rancho shocks, with 64k on the odometer, power locks, power windows, cd player, sliding window, bed mat, bed cover. It's got a clean car fax history with a recent service by ford @ 55k. The body has absolutely no rust or damage, the frame has a little bit of surface rust in a couple of places, I am not surprised with it being 10 years old. I've put a deposit down as they are only asking 15k. I plan on having it put on a lift and checked out, the main thing I will be looking for is leak from rear main seal and cracked manifold bolts among other things.

Anyways to get to the point of my post...

When I first started the truck after about 30 seconds the idle went up. Let it warm for about 5 minutes and the idle stayed consistent the entire time. As soon as I pushed the clutch in the truck idled down. Again it stayed consistent the entire time I drove it, when pulling to lights etc. I pulled off the side of the road to engage 4 wheel low, put the parking brake on let out the clutch and it began to idle up. As soon as I pressed the clutch in it idled down. Is this normal? I am thinking they designed it this way to prevent build up of carbon from low idle speeds?

Thanks for your help!
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Old 03-31-2010, 07:45 PM
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My 6spd will idle up after sitting for more than 30 seconds. Touching brake or clutch reduces the idle.

I don't think you have much to worry about a rear main seal leaking, although it will look like it is leaking. If there is oil around that area, check the valley on top of the engine for oil. Most likely where it will come from.

Make sure the power steering pump isn't leaking, and the ball joints are good. Both of those got me when I bought mine.
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Old 03-31-2010, 07:57 PM
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Sounds like you've found a nice truck .. Let's just say if you don't buy it then I might try to. lol.. And the idling up and down is regular..
Our 6spd 2000 does it too..

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Old 04-24-2010, 05:50 AM
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Thanks for the responses everybody. I am loving my truck... next stop Vegistroke!
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Old 04-24-2010, 04:45 PM
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crew cab with a stick! nice find. clean truck. needs to be level though.. lol.
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Old 04-25-2010, 10:20 AM
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Quote:
Originally Posted by Dietoremain View Post
crew cab with a stick! nice find. clean truck. needs to be level though.. lol.
Once I hook a load up to it, it should level out!
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