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C15 Acert motor building pressure in the cooling system. I
C15 Acert motor building pressure in the cooling system. I am aware that the diverter valve going bad can cause this issue. I am wondering what the diverter valve uses for pressure behind the diaphram… read more
Cat Man
Cat Man
Cat Engine Expert
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10,221 satisfied customers
I am currently having problems with a 5.9L ISB cummins
I am currently having problems with a 5.9L ISB cummins engine, is manufacture date is 2005 and its mounted in a Freightliner delivery van. … read more
Roy Belding
Roy Belding
7,522 satisfied customers
I have a c15 acert pushing coolant out the overflow hose and
I have a c15 acert pushing coolant out the overflow hose and aso the through the precooler i replace the precooler with a new one and its still doing the same and truck runs cold no more then 180 it a… read more
Cat Man
Cat Man
Cat Engine Expert
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My c15 accert pushes coolant out under load enough to cut
My c15 accert pushes coolant out under load enough to cut the truck off doesn't run hot no water in oil but radiator smells of exhaust… read more
Cat Man
Cat Man
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I have coolant blowing out my radiator cap. I've checked to
I have coolant blowing out my radiator cap. I've checked to make sure pump is working by the line going to top of reservoir. I put Blowby tube in bottle of water to see if it blew air and it did even … read more
Cat Man
Cat Man
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We have an 07 pete with c15 acert its pushing antifreeze out
we have an 07 pete with c15 acert its pushing antifreeze out the overflow but only when the turbo boost is above 40 lbs head and head gasket has ben replaced cat has put it on dyno and nobody can find… read more
Cat Man
Cat Man
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Cat c15 using coolant and pressure in the overflow
cat c15 using coolant and pressure in the overflow tank.Dealer says could be bad injector cups,wants to change them,doesnt appear to have coolant in the fuel??? … read more
Cat Man
Cat Man
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I have a c15 it sucks coolant out of reservoir dead after
I have a c15 it sucks coolant out of reservoir dead after running for about 10 minutes it pushes it back out over flow tube I have checked the precooler an its dry. The bottom radiator hose is cold to… read more
Cat Man
Cat Man
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My 07 peterbilt pushing water out of the over flow tube
my 07 peterbilt pushing water out of the over flow tube truck has 953000 miles uses no oil good power what could it be… read more
Cat Man
Cat Man
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I had radiator fluid coming out of my radiator pressure cap
I had radiator fluid coming out of my radiator pressure cap I was told that it could either be the air compressor or the head gasketI tested the engine for the head gasket and air compressor I tested … read more
Cat Man
Cat Man
Cat Engine Expert
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Im having some problems with my 06 t600 with a c15 cat.
Hi, Im having some problems with my 06 t600 with a c15 cat. Motor has around 650k miles never had any major work done to it. My problem is this. It has been leaking out coolant from the the radiator c… read more
Cat Man
Cat Man
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I have a bxs cat c15 which has psi in coolant res under load.
I have a bxs cat c15 which has psi in coolant res under load. I have replaced air compressor, water pump, thermostats, some hoses. Psi checked the system and dose not leak down. My drivers aids it has… read more
Cat Man
Cat Man
Cat Engine Expert
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10,221 satisfied customers
I have a c-13 in a 2006 freigtliner. It is pushing coolant
I have a c-13 in a 2006 freigtliner. It is pushing coolant out of the overflow bottle, not overheating. I wonder if the air compressor head gasket could be leaking? I also loose air pressure slowly wh… read more
Cat Man
Cat Man
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We 2004 kenworth loosing coolant it has and 4 engine recently
We 2004 kenworth loosing coolant it has and 4 engine recently replaced any suggestions as to why it is losing coolant… read more
Cat Man
Cat Man
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10,221 satisfied customers
I have a 2007 Peterbilt 379 with a C15 engine that is losing
I have a 2007 Peterbilt 379 with a C15 engine that is losing a lot of antifreeze but does not have any visible leaks other than the drain tube from the reservoir. It is building high pressure, but is … read more
Cat Man
Cat Man
Cat Engine Expert
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I cat c15 sdp and pushing coolant out the overflow it's
I cat c15 sdp and pushing coolant out the overflow it's doing it at idle and while driving, I have change the precooler and the air compressor and still doing it… read more
Cat Man
Cat Man
Cat Engine Expert
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hi, my name is ***** ***** NY. I have an '05 C15 ACERT that is
hi, my name is ***** ***** NY. I have an '05 C15 ACERT that is over pressurising the radiator. I put a new air compressor on it thinking it was bad as it was original, that was not the problem. We did… read more
Cat Man
Cat Man
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catman I have an 08 cat c15 eng sn sdp04125. It is building
catman I have an 08 cat c15 eng sn sdp04125. It is building pressure in the coolant. We thought it had a leak but I just looked at it and it appears to be flowing from the cap. the engine was cool lik… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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