6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHot start issue no more
Reported or suspected cause
root of the problem
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
While I was recently replacing my broken oil fill tube, I removed the extra wire I previously added, because I'm certain with the noticeable difference in the starter, that it was the root of the problem.
Leading evidence: 'root of the problem' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'root of the problem' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace battery' (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
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Performed · outcome unconfirmed
It's funny, when I first did the wire, the alternator slid right out (full disclosure, it was recently replaced by the PO, to fix the hot-starting issue).
Replace starter and the difference cold and hot was amazing
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
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Performed · outcome unconfirmed
I replaced the starter and the difference cold and hot was amazing.
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
The car was new to me, and I had a connection - so I had the battery replaced under warranty.
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 removed the Y cable and save the junction box by heating it up with boiling water to be able to reuse it again, I did not want to replace it with Porsche OEM Y cable, I didn't care for the size cable used by the OEM, I went online to Battery Cable USA and ordered the 1/0 cable with 5/16 hole ends on each end and 30 inches long, I also ordered the 4 gauge cable with 5/16 hole ends for the alternator charging wire at 30 inches long, the total bill came out to 24 dollars and was at my house within 3 days across the country.
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
It's funny, when I first did the wire, the alternator slid right out (full disclosure, it was recently replaced by the PO, to fix the hot-starting issue).
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
I finally got the car on the lift and decided i was going to replace the Y cable but did a voltage drop test on the ground cable first, it was ok at .01 drop.
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Suggestion · Original poster
I took the old Y cable and took the end that goes into the junction box and cut the cable off and installed a longer bolt 1 1/4 long and trimmed so I could close the cover again, I ran the alternator charge wire to the junction box instead of the starter, and installed the starter cable from junction box to the starter.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
root of the problem
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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
While I was recently replacing my broken oil fill tube, I removed the extra wire I previously added, because I'm certain with the noticeable difference in the starter, that it was the root of the problem.
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.
6 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
When I bought this car, I had hot start issues when the weather was hot, even when cold, the starter had to much drag to start... so I replace the battery from a H7 battery to a H8 battery and replace the starter. the Y cable looked great, it started better when cold but when it was hot outside and your were making a short stop like fueling, I did not shut off the engine otherwise i would be waiting to start the car again when if finally cooled down. I finally got the car on the lift and decided i was going to replace the Y cable but did a voltage drop test on the ground cable first, it was ok at .01 drop. I removed the Y cable and save the junction box by heating it up with boiling water to be able to reuse it again, I did not want to replace it with Porsche OEM Y cable, I didn't care for the size cable used by the OEM, I went online to Battery Cable USA and ordered the 1/0 cable with 5/16 hole ends on each end and 30 inches long, I also ordered the 4 gauge cable with 5/16 hole ends for the alternator charging wire at 30 inches long, the total bill came out to 24 dollars and was at my house within 3 days across the country. I took the old Y cable and took the end that goes into the junction box and cut the cable off and installed a longer bolt 1 1/4 long and trimmed so I could close the cover again, I ran the alternator charge wire to the junction box instead of the starter, and installed the starter cable from junction box to the starter. amazing the difference in performance, now it starts like the spark plugs are not even installed, took it on 500 mile trip this weekend in up to 88 degree weather and no worries about shutting down the engine to fuel the car up, it turned over like it has no compression and of course it instant start up now. great company to deal with and the cable are flexible. i did cover them in wire loom to protect them.
Here is a link to the cable site
https://www.batterycablesusa.com/1-0...les-0-awg.html
I did something very similar on my 99 Cab when my Y cable went bad. I have replace many Y cables when I worked at the dealership before I retired, and I'm no fan of the OEM Y design.
Apologies for reviving this older thread, but JohnCA58, I have a question about what you did. I'm about to replace my cable as well as have both the alternator and starter rebuilt as a precautionary measure as both are the original from a 2003. I have a few questions just for clarification.
1. You ordered both cables and ran both directly to the junction box? So there is no need for a cable to run from the alternator to the starter?
2. In regards to this quote "
I took the old Y cable and took the end that goes into the junction box and cut the cable off and installed a longer bolt 1 1/4 long and trimmed so I could close the cover again", why did you need to cut the cable if you had already taken it off using the hot water method? Did you reuse a portion of the cable other than the box?
3. Since doing this almost 2 years ago, any degradation in starting power related to the cables?
Thanks so much for posting this alternative.
1. No, no need to run a cable from the Alternator to the starter. Starter only needs battery power from the junction box and alternator supplies voltage back to the battery thru the junction box.
2. I only wanted to save the junction box (plastic) to reuse with new bolt and cables.
3. Still working great
Don't forget to get a 1 foot long 1/0 cable with 5/16 hole lug ends for your ground also.
When I first had the hot start problem, I of course thought it was the battery. The car was new to me, and I had a connection - so I had the battery replaced under warranty. It happened again 3 days later. Even though my Y cable looked great, a ran the extra wire to the (charge? boost?) terminal in the engine bay. It seemed to make a difference, but one day when the conditions were right (wrong?) it was really sluggish on a hot start. I found another post about the starter essentially having the same issues as a bad Y cable - increased resistance when hot. I replaced the starter and the difference cold and hot was amazing.
While I was recently replacing my broken oil fill tube, I removed the extra wire I previously added, because I'm certain with the noticeable difference in the starter, that it was the root of the problem. Of course - I'm not driving it enough right now to be able to test it. I removed that wired just to have it back to stock - but if I need it, I'll put it back in. I so look forward to removing the alternator again. It's funny, when I first did the wire, the alternator slid right out (full disclosure, it was recently replaced by the PO, to fix the hot-starting issue). That was in November. I was amazed at the number of YouTube videos on how to get the alternator out. I was like "seriously? take out the bolts, rotate it, tip it out. When I took it out last week, it took a hell of a lot of tapping and twisting....so I must have been really lucky the first time.
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