2008 water pump

[Szjames]

MY 2008 was perfect until I got in an accident. I got it back from body shop and a week in a half (less then 50 miles) my motor blew. They are telling me that it is not accident related. They say my water pump seized which caused my time and chain to stop whoch ruined my motor. I had no warned!! All the coolent from my water pump is in my motor. They machanic shop said instead od it leaking o the ground it leaked to me motor. What/how does that happen? No one can explain it to me please help!!

[macbwt]

The 3.5 has an internal water pump. The weep hole and seal has been known to fail. When the seal fails it can allow the coolant to leak. Instead of leaking out and going to the external route out of the engine it all flows into the oil pan and then mixes with the oil. This can lead to a complete failure of the engine due to water mixing with the oil and reducing the lubricating effectiveness of the engine. if you were to investigate this you would find this is the case in your situation.

This video is two parts but if you watch them both you will see how this happens. This one is a Ford Flex but the same engine.

[WWWPerfA_ZN0W]

What kind of accident was it, how severe, from what angle?

 

The water pump/coolant pump is also timing chain driven, unlike the belt-driven setup of yesteryear. I have seen the weep holes on the coolant pump cause a few problems over the years, including crankshaft position sensor corrosion & failure in some models. But this is probably the biggest "catastrophe" I have seen it directly responsible for. You'd think head gasket or cracked block, but no, it's the pump.

Item Part Number Description
1 6256 LH intake Variable Camshaft Timing (VCT) assembly
2 6268 LH secondary timing chain
3 6C525 LH exhaust VCT assembly
4 6B274 LH primary timing chain guide
5 6268 Primary timing chain
6 6306 Crankshaft timing chain sprocket
7 6L266 Primary timing chain tensioner
8 6K255 RH primary timing chain tensioner arm
9 6268 RH secondary timing chain
10 6C525 RH exhaust VCT assembly
11 6256 RH intake VCT assembly
12 6K297 RH primary timing chain guide
13 — Coolant pump gear (part of 8501)
14 6K297 LH primary timing chain guide
15 6K254 RH secondary timing chain tensioner
16 6K297 RH secondary timing chain tensioner shoe
17 6K254 LH secondary timing chain tensioner
18 6K297 LH secondary timing chain tensioner shoe

Item Part Number Description
1 W503278 Coolant pump bolt (8 required)
2 8501 Coolant pump
3 8507A Coolant pump inner gasket
4 8507B Coolant pump outer gasket

Edited June 1, 2016 by WWWPerfA_ZN0W

[Szjames]

It was a minor accident as in not going fast but it broke the axle. Had to replace the axle the knuckle stablizer bar and driver side strut

[WWWPerfA_ZN0W]

Doesn't seem like it should have killed the pump, but also depends on whether it was at/near end-of-life already. Hard to tell in a post-mortem, maybe a Ford Engineer could.

[Szjames]

I have spoke with ford and 3 techs from different shops all told me they have never heard of the coolant going to the motor. If the sgop it is at said he doeant know how and has never seen this but that is what happened. And I understand if it eas old and going bad but I should have had some warning right? If i hadnt been in an accident it probally would have lasted a little longer and gave me signs. I baby my car and take very good care of it

[akirby]

Unless you had recently checked the oil for coolant or specifically checked for leaks it's hard to say that it wasn't already failing. It is suspicious that it happened so soon after the accident but probably not something you can prove definitively, although it won't hurt to turn in the claim to insurance and try to convince them it was related.

[Jason Gould]

Seems to be a common issue with this engine....

 

Are there any symptoms leading up to the failure?

[WWWPerfA_ZN0W]

Much harder to tell, since the pump is internal. Normally you'd look for a leak somewhere on/underneath the engine. Best indicator would be the coolant level going down without any indications of leaks, or coolant starting to look "unclean"/oily. Some slime buildup does happen on the sides of the degas bottle over time as coolant additives break down (normal).