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Oil in the cooling system, Not a head gasket. How does the…

Oil in the cooling...

Oil in the cooling system

Mechanic's Assistant: Has the car been overheating? Have you noticed any leaks?

Not a head gasket. How does the transmission cool on a 2002 Mazda 626?

Mechanic's Assistant: Are you fixing your 626 yourself? What have you tried so far?

Fixing it for someone else

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Compression good on all cylinders. No loss of engine oil

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Answered in 1 minute by:
9/20/2017
Dan
Dan, Technician
Category: Mazda
Satisfied Customers: 25,969
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Welcome to JustAnswer, my name is ***** ***** I'm here to help get your problem solved.

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V6 or 4 cylinder?

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Customer reply replied 10 months ago
V6

Does it overheat?

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Customer reply replied 10 months ago
They said it had. The hoses and radiator are filled with what looks like vanilla pudding
Customer reply replied 10 months ago
At least all cylinders had around 150 lbs compression

IF it was something such as oil cooler or intake gasket it wouldn't overheat so problem sounds like head gasket. Head gasket is a 10 hour job to replace. Here are replacement instructions, let me know if you have questions. Thanks.

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https://www.dropbox.com/s/udh5xqikxkyjp6t/oc2.pdf?dl=0

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https://www.dropbox.com/s/km348rh1fmlfk5c/oc3.pdf?dl=0

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Customer reply replied 10 months ago
How does the transmission cool? No cooler in the radiator

It has a external cooler, here is a picture.

-

https://www.dropbox.com/s/9netumh462encuz/cooler.pdf?dl=0

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Customer reply replied 10 months ago
Thanks for the picture. It has coolant and transmission fluid both going through the external cooler correct? Transmission fluid could still get in the coolant if there was a crack right? I will take the cooler off and test it. Thanks

Yes it is possible, let me know if you have more questions. Thanks.

Dan
Dan, Technician
Category: Mazda
Satisfied Customers: 25,969
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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