9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCar cut out on way home from DE
Leading reported evidence
Replace fuel pump last week
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.
Leading evidence: 'Replace fuel pump last week' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'fuel pump relay' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check any stored codes' (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
Car has been running fine since and ran Durametric and found no fault codes.
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 suspect 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.
Suspected cause · Original poster
I thought maybe it was the fuel pump relay, so I pulled into a parking lot to see if I could figure out what was going on.
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
Did you plug it in and check for any stored codes?
Check are the positive and negative battery terminals
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
First thing I would check are the positive and negative battery terminals.
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
if the ECU is not potted, remove the cover and check the caps, see if any are bulging, and if the ECU has heat spreaders on the power transistors, and they are bolted, I've had good luck taking the bolts out and cleaning between them and their contact point with electrical cleaner and some q-tips, then put some fresh thermal grease in and re-tighten,,
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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T155324Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
After running three 20 minute sessions at SCCA Track Night event at Palmer couple days ago, on my way home my 1999 C2 cut out. I pulled over to the side of the road sat for a couple of minutes and the car restarted. The engine cut out two more times but always restarted after a few minutes. I thought maybe it was the fuel pump relay, so I pulled into a parking lot to see if I could figure out what was going on. I lifted the rear shelf carpet where the ECU and a relay panel is located and noted that the ECU was extremely hot. I sat for a while and let it cool down and drove 94 miles home without any problem. Wondering if anyone else has had a similar experience. The air temperature at Palmer was in the low 80�s and I have tracked many times in hotter weather without any issues. Any thoughts that the extreme heat was generated by the ECU or residual heat from the drive train. Car has been running fine since and ran Durametric and found no fault codes.
When you said the car wouldn't restart until it cooled down, did the car just crank and never fire up?
Honestly, another part I think you should consider replacing is the fuel pump preemptively. Since you track your car, I think it is actually more of a reason to replace it sooner than later. These pumps are old now. And I don't like randomly replacing parts if I don't have to.
I've been working on my 2004 BMW 330 ZHP. I am going to track it this year. I literally just changed the fuel pump last week. Its 15 years old. Even though it still worked, it can't be working optimally. It's never a good thing if an engine starves for fuel either.
Just a recommendation.
I know a 20 year old fuel pump is a liability, but I don’t believe that was the cause of my car cutting out. Need to figure out why the ECM got so hot.
Something that's been a reoccurring theme,, on various cars I've owned, the ECU gets dodgy at 10 to 15 years,, usually because the capacitors have dried up,, just like good audio gear they need re-capped about every 10 years.. To work their best. if the ECU is not potted, remove the cover and check the caps, see if any are bulging, and if the ECU has heat spreaders on the power transistors, and they are bolted, I've had good luck taking the bolts out and cleaning between them and their contact point with electrical cleaner and some q-tips, then put some fresh thermal grease in and re-tighten,,
Havn't done this on a 911, but my 06 330XI did some weird stuff and after a couple hours on my bench getting new electrolytic's and some love to the power transistors it was fine. Potted ECU's are a way harder problem..
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