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EGR valve full of black coolant

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Old 03-16-2013, 12:02 AM
KPBJJ KPBJJ is offline
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EGR valve full of black coolant

Trucks been puking for about 6 months so I'm thinking its head gaskets but I wanted to delete the EGR first to rule that out and when I took the vertical EGR cooler off my EGR valve was full of black water/coolant. Any thoughts? Is this a symptom of blown gaskets?
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Old 03-16-2013, 07:40 AM
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if you have the old style valve that has the coolant line to it..then the valve is bad. Don't think that is the cause of the puking though.

Were you getting some white smoke while driving as well?
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Old 03-16-2013, 01:50 PM
KPBJJ KPBJJ is offline
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No white smoke. I think it was the old style valve. EGR deleted and still puking.
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Old 03-16-2013, 04:43 PM
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Hyperextended thermostats?? Also, get a new coolant cap and try Senix's trick about sanding the top of the coolant reservoir.
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Old 03-16-2013, 07:28 PM
KPBJJ KPBJJ is offline
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Changed the coolant cap a couple of times and the dealer confirmed combustion gases in coolant. Haven't heard about hyperextended thermostats. Is this a possible issue?
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Old 03-16-2013, 07:32 PM
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headgasket time. If under warranty take it in and have them fix it.
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Old 03-16-2013, 07:44 PM
KPBJJ KPBJJ is offline
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That's what I have been planning on doing for awhile now. Just want to make sure it's not anything else before I spend all that money to pull the cab and do gaskets. Also when I am just idling my ac starts blowing warm air and my oil temp has been getting real high when towing up to around 230 EOT.
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Old 03-16-2013, 07:48 PM
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While they are there they can check t stats and the oil cooler. Might want to have them put a new one on.

This truck a used one? Have you had it long?
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Old 03-16-2013, 07:50 PM
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Used 142,000 miles. Had it for two years.
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Old 03-16-2013, 07:53 PM
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I think you are suffering from the previous owner lack of maintance of the cooling system.
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Old 03-16-2013, 07:56 PM
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? If my EOT/ECT delta is always within 6 degrees or so my oil cooler should be fine right?
What do you think is the problem with my cooling system from not being maintained?
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Old 03-16-2013, 08:01 PM
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I think your coolant was not changed at the correct intervals nor was the nitrites checked like they should have been.

A 6 deg spread is ok but since you have a known issue (gaskets and egr valve) I think it prudent to change cooler as well.
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Old 03-16-2013, 08:05 PM
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Should I check for hyperextended thermostats first or just change head gaskets and add some arp studs? What do you think? Can Hyperextended thermostats cause puking issues?
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Old 03-16-2013, 08:17 PM
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Quote:
Originally Posted by KPBJJ View Post
Should I check for hyperextended thermostats first or just change head gaskets and add some arp studs? What do you think? Can Hyperextended thermostats cause puking issues?
Yes, I would tend to think that could be some of the causing, however you said you had exhaust gas in your coolant. That won't come from thermostats.

It is easy enough to pull the t stats and have a look though.
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Old 03-16-2013, 08:50 PM
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Just pulled 2 codes
PO528 fan speed sensor circuit no signal
PO480 fan 1 control circuit
And when my oil and coolant temp was high the other day while towing my fan never came on
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