23 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHNon-serviceable IMS bearing on '03 Remanufactured Engine?
Reported or suspected cause
identified and a bigger more robust bearing designed/installed
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.
Reported cause
Correct, problem was identified and a bigger more robust bearing designed/installed to mitigate the failure.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Read full discussion summary
Leading evidence: 'identified and a bigger more robust bearing designed/installed' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'identified and a bigger more robust bearing designed/installed' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check of the vacuum hoses and secondary air injection valve' (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
This engine was purchased "used" from dismantler in Los Angeles, by the PO of my project car, and came with the car that had a "smoking" engine.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Use )
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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 already bought the Pelican Parts replacement bearing and LN install tools (used).
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Use since they are fairly easy
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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
To your point, I went used, since they are fairly easy to get to, I had them, I have done it twice on these engines already.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Check of the vacuum hoses and secondary air injection valve
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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
TNT, while the motor is easily accessible, make sure to check all of the vacuum hoses and secondary air injection valve.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Recommend would be possibly aos hoses as they
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
That list looks good from my knowledge, only other things i'd recommend would be possibly AOS hoses as they run all over the place and are difficult to get to and they aren't expensive.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Replace lot of items
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
Upon preparation of replacing a lot of items on the "new" engine, I was getting ready to install a new IMSB, and discovered the nut on the existing IMBS was much larger than described in Dempsey's book.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Run over the place and are difficult
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
That list looks good from my knowledge, only other things i'd recommend would be possibly AOS hoses as they run all over the place and are difficult to get to and they aren't expensive.
Non-serviceable IMS bearing on '03 Remanufactured Engine?
Coverage and how to read this overview
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.
23 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
The new bearing is more robust but still not immune from failure.
Need help on remanufactured engine. Engine #M96/03AT66565745. Not a lot of information on the engine, other than it had about 70k miles on it.
This engine was purchased "used" from dismantler in Los Angeles, by the PO of my project car, and came with the car that had a "smoking" engine. Diagnosis was a cracked cylinder head and the reason a replacement engine was sought.
Upon preparation of replacing a lot of items on the "new" engine, I was getting ready to install a new IMSB, and discovered the nut on the existing IMBS was much larger than described in Dempsey's book. That made me look at the engine number and I discovered it was a remanufactured engine.
Does this mean the "new" engine's IMSB can't be replaced? Is this a good or a bad thing?
Thanks!
So I am "guessing" that the remanufactured engine has a more robust bearing, which came in the later engines that didn't have the same chronic problem as earlier single and double row bearings.
Said another way, there is not the same desire/need to replace these as there is the earlier bearings.
Correct?
Ok. I already had the cams locked, chain tensioner out and ready to rock, when I discovered it. Guess I will button it back up and get it mated to the Tiptronic.
Nice to see I got a more robust engine.
Had you bought the bearing yet or were you waiting to take it out first?
Would be a good time to consider other maintenance items whilst your engine is out too.
No. I already bought the Pelican Parts replacement bearing and LN install tools (used).
You are correct. Since I already dropped the engine/transmission, I planned on, and have done:
Power Steering Pump
Alternator
AOS
RMS
Water Pump/Thermostat
Serp Belt
Spark Plugs
Misc Coolant hoses
Coolant Reservoir
Oil/Filter
New CV axel bolts
I think this is all that I should address for now. Any others?
Once I get the car put back together and working fine, I will check:
Transmission fluid/filter
O2 sensors
A/C
Brakes
CV shafts
Lights
That list looks good from my knowledge, only other things i'd recommend would be possibly AOS hoses as they run all over the place and are difficult to get to and they aren't expensive.
Also check the condition of the starter Y cable, actually wouldn't be a wasted investment to replace that regardless of what it looks like because its difficult to diagnose. Again can be done with engine in place but its not easy.
Not sure if i'd do the PS pump or alternator unless you knew they had problems, there is decent access to them with the engine in the car that you can tackle at a later date, that is unless you've already bought them. If you have would make sense just to install them.
Funny you mention the hoses for the AOS. The PO had already purchased the AOS, hoses and water pump. All came with the car. I will replace the 2 hoses before the car goes back in.
The PSP looked like it was leaking from the front seal. I just pulled the pump and Alt off the "bad" engine. The Alt had some slippage when I spun the pully, and figured not to chance it. To your point, I went used, since they are fairly easy to get to, I had them, I have done it twice on these engines already.
I have a few hundred pictures of EVERY step from removing the first screw, to dropping the trans/engine, replacing all parts, and soon the reinstall.
Who knows, might post all the steps/procedures, if there is interest.
TNT, while the motor is easily accessible, make sure to check all of the vacuum hoses and secondary air injection valve. And yeah, please continue to post pics.
Agree with this comment. The new bearing is more robust but still not immune from failure. It has about the same failure rate as the original dual row bearing in the early 3.4 engines. Tony Callas at Rennsport also makes this recommendation.
A write up with those hundreds of pics would be great. They make for really good references
I also appriciate a good set of rubber gloves whilst working too, nice one.
Ok...It will take a while to document each picture along each step of the way, but I will give it a shot. Since this is more of a project, I started a new thread. Here we go....
https://rennlist.com/forums/996-foru...l#post14089513
This is a source reference. Confirm exact model applicability in the original material.
