Engine stall at highway speeds and coolant loss - Ford Powerstroke Diesel Forum
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Old 08-24-2009, 05:29 PM
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Engine stall at highway speeds and coolant loss

Ok I have a 2003 f250 6.0. It is on 44 inch tires and has a diablo sport predator tuner and 6 inch exhaust. I wass puttin down the highway the other day at about 2200 rpms 60mph and my engine started to lose power an pretty much stall out for a sec. I notice there were no check engine lights or hot or overpreasure gauges. Also when it stalled it was always at 2200 rpms And also blew alittle unburnt fuel out of the stacks. I've added 4 gallons of coolant in the last 2 months any ideas? I thought maybe overheating due to low coolant but my guages we not reading hot. Please help. I'm stumped
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Old 08-24-2009, 05:37 PM
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Welcome to the org!!
You should scan the truck for codes.
Does the area around where you fill your coolant up look kinda crusty, like where dried coolant would be?
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Old 08-24-2009, 05:50 PM
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Ot really. The cap holds pressure with no leaks at all. Would the low coolant cause it to stall like that? U could deffinatly here it when it stalled cus the turbo stopped screamin. I added a gallon before I drove home and it did it on the way back (40 miles). Then I added another gallon and haven't drove it sense. Ummmm
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Old 08-24-2009, 06:06 PM
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well, if you're adding coolant, it's going somewhere. You could have blown EGR Cooler, and you'll use a ton of coolant that way. Also if the EGR cooler is blown, you run the risk of blowing head gaskets, and or hydrolocking the engine. Simple check is to remove EGR Valve, and jack up truck 5 or 6 inches in the rear. Then let sit for about 15 minutes. After it has sat, check in the hole where the EGR valve goes and see if it's wet. If it is, then you got a bad cooler, if it's not, then you got to look at other things.
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Old 08-24-2009, 06:13 PM
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Ok. I will try that. Would that cause it ti stall tho. And how much u think the egr cooler is?
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Old 08-24-2009, 06:27 PM
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if it started to suck a bunch of water in the intake, you bet....... when EGR cooler blows, it usually dumps the coolant out the exhaust, but some can into the intake trough the EGR valve, depending on what position it is. Also if the EGR valve is stuck, this can cause a bunch of issues. I think EGR replacement is about 1500 bucks for a dealer to do it. Not sure though.
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Old 08-28-2009, 12:17 PM
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I unpluged my egr valve when the truck was shut off and took off my diablo sport tuner. No more hiccups now. Guna load my sct programmer on it tonight
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Old 08-28-2009, 07:27 PM
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good to hear. You'll love the SCT. Much better
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Old 08-28-2009, 07:59 PM
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Becareful , did you find where the coolant was going? You could still have problem!!!
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