14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHScrew M 5x16
Leading reported evidence
Use fan
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
Used the new fan to test the entirety of the electrical circuit (success).
Leading evidence: 'Use fan' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean radiators' (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 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.
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.
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
Basically, ref'd Loren's DIY (renntech) on relay diagnostics, Wayne's DIY (Pelican) on fan removal, and SharkAttack's post (here) on fan repair internals.
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
Used the new fan to test the entirety of the electrical circuit (success).
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
Basically, ref'd Loren's DIY (renntech) on relay diagnostics, Wayne's DIY (Pelican) on fan removal, and SharkAttack's post (here) on fan repair internals.
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.
14 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.
Is this a self tapping screw? Is that why it feels like the wrong thread size for the new (identical replacement) fan (Bosch 0130303233)?
This screw is Porsche part no. 900-146-116-09. It attaches radiator fan to shroud.
I'm reusing the old screws, cleaned and in good shape, but they're not going in easy. They go into the old fan just fine. I guess that might make sense for a self tapping screw. Should I just force it in, vs. another drive around town looking for a better matching screw. Thanks.
Nice title huh, you pbly wanted pics
They screw into metal, and they look round to me, but thanks that gives me something to go on. I usually don't sweat details like this, but it took me a week to get this far, don't wanna go back.
They do now (have threads), because I had to attach it to make sure the electric circuit/harness was good.
Good question though, coz looking at the tabs now, it might not have been threaded, which kind of surprises me for being thick metal. My cam skills can't capture that small of detail to show you.
I wish Bosch provided manuals for their fans, but I certainly can't find them.
Not one particular DIY, but I've accumulated a ton of solid links I reference. I could compile and publish a short list of best ones, or provide isolated ones as needed. Is there a particular step you need?
Basically, ref'd Loren's DIY (renntech) on relay diagnostics, Wayne's DIY (Pelican) on fan removal, and SharkAttack's post (here) on fan repair internals. Also heavy reliance on Porsche diagrams (einmalig), "related" parts info (pelican), etal. I don't know what Bentley has on this, but if someone wants to front me a job (Oracle Financials techno functional), I'll buy a Bentley and Durametric right now.
My journey:
1. Removed bumper to clean radiators. Discovered right fan not working.
2. Determined relays were fine.
3. Removed fan. Couldn't figure out how to bench test it, so opened it up and found broken solder/weld points. Tried to repair (solder) and failed.
4. Decided to stop the bleeding (money for tools, driving all over town searching for this or that) when I found a price point I liked on a new Bosch fan ($168 partsgeek).
5. Used the new fan to test the entirety of the electrical circuit (success).
6. Now ready to install new fan, button up, and move on to other projects (sticky brake pedal, oil analysis, detailing).
Thanks. Not ready to do the job just yet, but every once in a while i briefly hear a high pitched squeal coming from one of the fans, so I'm guessing this job is in my future.
hmm . . I never heard a squeal on mine, but others have had debris stuck in the blades, and there are bearings in the fan motor. I'm not sure if the brushes could squeal. I've posted pics inside the fan recently, you can easily find those in my history.
You can feel the blades by hand, spin freely, no debris, without removing the fan, but you'll pbly need to remove that wheel and bend back the wheel liner. Removing the fan is easy, and no need to remove radiator or its hoses.
The hardest part of getting to that fan is those plastic rivets in the wheel liner. Feel free to PM me anytime.
This picture says it all (below). I'll pbly make a DIY based on it.
This photo addresses two issues:
1. Difficulty attaching fan to shroud with 3 5x16 screws.
2. How easily debris could get caught between fan and shroud.
Screws- some diagrams call them screws, others bolts, others hex bolts and so on. They require alot of torque to go in the first time, namely a wrench, not a screwdriver.
Shroud- Tight clearance between shroud and outer perimeter of fan, 1/8 inch or less. It's somewhat moveable, not fixed in stone. So a few blades of straw or heavy grass could get in there and cause squealing which might come and go during heat cycles.
Legend:
Red Arrows - 3 screws attach fan to shroud.
Green Stars - Single sheet of paper folded 4 times fits between fan and shroud (just barely). Illustrates how debris could easily get caught in there.
Yellow Callout ("Yes") - Craftsman wrench provides the torque needed to drive the screws attaching fan to shroud.
Yellow Pipedream ("No") - Screwdriver not enough torque to drive screws.
M stands for metric
M 5/16 -- ain't none
M5 bolt dia--.1968
M8 bolt dia --.3149
5/16 dia------.3125
Obviously, if you stated your "process" correctly, you force fed a 5/16 bolt into a M8 thread !
If you can, put a 5/16 lock washer & nut on the far side for safety & don't try putting M8 bolts in a messed up M8 thread . Make sure you nut it w/ the correct nut--either a 5/16 18 or 5/16 24 --whichever type bolt you used.
Bob
01 C4
31 Ford cp chp & ch, 302/350
40 ******, 302/350, IFS
38 Ford cp, 327/350, IFS
57 Belair
62 356B --long ago
This is a source reference. Confirm exact model applicability in the original material.
