9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHPSM Activation Issue
Leading reported evidence
Replace clutch
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
Clutch was changed about 6 months ago due to an unusual wear on the fork and while the shop was in there, IMS Solution was installed.
Leading evidence: 'Replace clutch' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust other side' (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
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Suggestion
Lazy guys turn the steering wheel to get toe on one side correct then adjust the other side.
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
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Suggestion
After they will adjust the steering wheel to be straight.
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
Before you start pulling and replacing random parts.
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.
9 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.
2 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
No more issues, wet or dry, and eat highway clovers at speed.
Wondering if anyone on here can chime in on this problem. I�ve been dealing with a PSM issue where it seems to activate inappropriately causing a very sudden and unexpected feeling that ABS is activating during even mildly spirited driving in my 2003 Carrera 4S that I acquired about a year and half ago. The PSM activates in left hand corners and during mid-corner or just after mid-corner. This makes the car feel as if it�s going to understeer off the road. Occurs for a split second with PSM light coming on and then off for that split second. My foot is never on the brakes when this occurs as I�m usually rolling onto the throttle by midcorner. Doesn�t do it at lower speeds around the city but occurs when driving spiritedly in the canyons (but I should add that I�m not pushing it anywhere near its limit).
It�s recently had new shocks, shock bearing plates, and suspension arms and links (all Bilstein and OEM parts) with stock alignment done. Wheels are balanced. Calipers were removed and repainted for cosmetic reasons. Tires are all within five years and appear to have worn evenly. Cold tire pressures 32-33 psi front and 36-37 psi rear. Clutch was changed about 6 months ago due to an unusual wear on the fork and while the shop was in there, IMS Solution was installed. A Porsche independent shop couldn�t reproduce the issue which wasn�t surprising since it never happens on city streets/highway nor has the PSM activation stored any codes. A second (smaller) independent shop says if the first shop couldn't figure it out, he wouldn't be able to.
Any thoughts before I start down the rabbit hole of replacing tires and parts (such as the ones mentioned here,
Porsche PSM Failure: A Mechanic's Guide To This Common Nightmare
)?
First thing I would do is download the PIWIS software and get that up and running for $100 or so. Before you start pulling and replacing random parts. See what codes you get.
Could be the yaw sensor, ABS module, brake switch, loose wire, maf sensor, 1 of 4 speed sensors�
I�m looking into my C4S for a weird speedo signal; focusing on the ABS module now, have been for about 4 weeks. Wheel speed sensors all check out, as does the wiring and brake switch. It�s systematic trial and error without just swapping parts.
OP your steering angle sensor is miscalibrated. It thinks you are steering straight and sliding so it's trying to correct.
You need a PIWIS to read and calibrate the steering angle sensor. Durametric claims to do it but they are lying.
Edited to add, it's entirely possible that during an alignment the tech got lazy and didn't do it correctly. The correct way is to clamp the steering wheel straight ahead so the rack is centered. Then adjust toe on each wheel.
Lazy guys turn the steering wheel to get toe on one side correct then adjust the other side. After they will adjust the steering wheel to be straight.
Check this by sticking a piece of tape on the top center of the steering wheel. Then turn it to the stop in each direction. The steering wheel should turn exactly the same amount in each direction.
Did you ever get an answer to the cause for the left front brake activating on its own? I have the same problem and have searched the web and found conversations started on the subject, but no closure. I thought mine was the speed sensor, so I swapped the two front speed sensors and the wheels. No change. Car still brakes mid corner on the left front wheel. I would figure that I have ruled out the sensor and any minor variations in tire pressure or size. I can't see how the brake switch or MAF would relate to our problem. So I'm left with a possible bad wiring harness to the left front speed sensor or maybe the yaw sensor or steering wheel angle sensor.
When i had an alignment done, I was getting some of that behavior, but almost only felt it on wet roads. I once had the same issue as the OP entering a highway, dry conditions. Long story short, whipped out the piwis 3 clone, reset the steering angle sensor, and voil�. No more issues, wet or dry, and eat highway clovers at speed.
Yes, and no. The issue is resolved when I switch off PSM so that's what I do now on canyon drives and the track day I went on not too long ago. Other than that, I haven't done anything else as it hasn't been an interference. And thanks to
@elnonio
, I may at some point get my hands on a PIWIS clone and try resetting the steering angle sensor.
