3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant on Top of Right Cyl. Bank
Reported or suspected cause
o-rings
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'o-rings' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'o-rings' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check water' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I also bought a liter of Pentosin CHF 11 S and replaced the steering fluid I sucked out.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
If I did this again I drop the oil pan plan and check for water.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Major issue is that you need to drain the cooling system in order to change the orings (good time to put in fresh coolant/distilled water mix), and do any other cooling system updates (e.g.: water pump, t-stat, etc.).
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Major issue is that you need to drain the cooling system in order to change the orings (good time to put in fresh coolant/distilled water mix), and do any other cooling system updates (e.g.: water pump, t-stat, etc.).
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Pelican Parts: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T074343Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I checked this morning to see where the excess green rain water was coming from on my '99 C4 with about 96000 miles on the engine.
I have a pool of coolant on top the block under the oil cooler area. sigh!
With an inspection camera I can't see any obvious leaks from the cooler connections to the block. Or, on the surface of the cooler.
What are the chances that the seals have perished and I can put new O-rings in? If the seals fail am I looking an oil water intermix or one or the other all over the engine?
Thanks for any info you have.
I'm really can't afford a new cooler just before Christmas. the $10K over the last 2 years on other parts and maint. has me hoping for a simple fix this time.
The orings for the cooler are very cheap, couple bucks at most. There are only four bolts holding the cooler down, so the orings are easy to change. Major issue is that you need to drain the cooling system in order to change the orings (good time to put in fresh coolant/distilled water mix), and do any other cooling system updates (e.g.: water pump, t-stat, etc.).
Leak is fixed, it was the O-rings.
What a tight. patience testing job.
on my 99 with a 2002? replacement engine I needed 2 X 999-707-409-40-M17 and 2 X 999-707-389-40-M17 O-rings. Buy new gaskets for the intake to head runners 997-110-247-00-M30 and I should have bought one for the throttle body to intake, also. I also bought a liter of Pentosin CHF 11 S and replaced the steering fluid I sucked out.
When the exchanger is popped loose from the block I don't see any way to avoid some water / oil contamination.
Plan on an oil change. If I did this again I drop the oil pan plan and check for water. Loctite 5900 to seal it according to our host.
I had to cheap out and reuse my coolant. Wonder of wonders! On the refill and start up I didn't have any purging problems.
Draft a helper with long skinny arms, some of the reaches are tight to say the least. The factory manual did not mention a fuel circuit on one of the A/C coolant pipes in the back of the compressor. Before you remove these hoses cogitate on how the heck you're going to re-connect them.
one of 2 fuel lines you have to reconnect!
I hope this is a repair that you never have to do with the eng. in :-)
Lance
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