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Intermittent crank no start / bad idle issue

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHIntermittent crank no start / bad idle issue

Leading reported evidence

Replace car towed

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 had the car towed and replaced CPS again (under warranty and my indy didn't charge me labor, so completely free minus tow) Indy replaces new CPS starts car then pulls an o2 sensor failure so I replaced that as well.

Intermittent crank no start / bad idle issue
Read full discussion summary

Leading evidence: 'Replace car towed' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace car towed' (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.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace coils and plugs

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 had coils and plugs changed at 27k too when I bought the car.

Intermittent crank no start / bad idle issue

Replace cps

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 had the CPS changed last year so it was definitely odd that it was pulling these codes.

Intermittent crank no start / bad idle issue

Replace cps starts car

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 · Original poster

I had the car towed and replaced CPS again (under warranty and my indy didn't charge me labor, so completely free minus tow) Indy replaces new CPS starts car then pulls an o2 sensor failure so I replaced that as well.

Intermittent crank no start / bad idle issue

Run enough

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 · Original poster

I got it started again and had it running enough to drive it back to shop, had to give it fuel at idle to keep it from stalling though.

Intermittent crank no start / bad idle issue
Frequently discussed actions (6)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace car towed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 had the car towed and replaced CPS again (under warranty and my indy didn't charge me labor, so completely free minus tow) Indy replaces new CPS starts car then pulls an o2 sensor failure so I replaced that as well.

Intermittent crank no start / bad idle issue

Replace coils and plugs

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 had coils and plugs changed at 27k too when I bought the car.

Intermittent crank no start / bad idle issue

Replace cps

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 had the CPS changed last year so it was definitely odd that it was pulling these codes.

Intermittent crank no start / bad idle issue

Replace cps starts car

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

I had the car towed and replaced CPS again (under warranty and my indy didn't charge me labor, so completely free minus tow) Indy replaces new CPS starts car then pulls an o2 sensor failure so I replaced that as well.

Intermittent crank no start / bad idle issue

Run enough

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

I got it started again and had it running enough to drive it back to shop, had to give it fuel at idle to keep it from stalling though.

Intermittent crank no start / bad idle issue

Smoke-test intake/vacuum leaks

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

Has the car been smoke tested for vacuum leaks?

Intermittent crank no start / bad idle issue
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.

5 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Was coming home from a drive maybe 30 minutes long in my 05 996 with 49k miles. Car started to lose RPM's at idle to the point where I needed to give it fuel so it wouldn't stall so I could make it home. Car died as I was pulling into my driveway. Wouldn't start and didnt pull any codes. let it sit for a while cranked it again and it started right up so didn't think too much of it. drove it for about a week and then the same issue happened again. Started to lose RPM's at idle and bounce around between 600-1000, stalled and wouldn't start. It pulled a P0335 (CPS bank 1) and P1325 code. this time I couldn't get car started again after letting it sit for hours. I had the CPS changed last year so it was definitely odd that it was pulling these codes. I had the car towed and replaced CPS again (under warranty and my indy didn't charge me labor, so completely free minus tow) Indy replaces new CPS starts car then pulls an o2 sensor failure so I replaced that as well. once done starts up no problem and idles fine. I go to pick up car 2 hours later and drive off. I notice after 5 minutes of driving that I'm starting to sputter RPM's at idle, not nearly as bad when it happened the first time. I pulled into a gas station shut the car off to fill it up. Tried to start again and wouldn't fire. Would crank for a few seconds and then everything would stop. tried it again and it wouldn't crank and crank but no start. I pulled the codes and got P0335, couldn't be possible as I just replaced it that day and everything was fine. I got it started again and had it running enough to drive it back to shop, had to give it fuel at idle to keep it from stalling though. The prior year I replaced: Fuel pump, Crank sensors, Camshaft sensors both sides, Gas tank vent valve and sending unit, which all seemed to fix a hot start issue I was having (Specifically the camshaft sensors), but for some reason I think this new set of issues is possibly related to last years hot start issue as the car is cranking very similarly. Other than that car is up to date on all maintenance. I had coils and plugs changed at 27k too when I bought the car. at a loss here Any suggestions???

POST 2Original post

Either bad CKP, wiring issue, or reluctor. Check the loom and make sure you don’t have a broken wire inside.

POST 3Original post

Has the car been smoke tested for vacuum leaks?

POST 4Original post

Is the oil filler pipe cracked? Usually cracks where the smooth part meets the corrugated part.

POST 5 / ORIGINAL POSTEROriginal post

@Dr_Strangelove No it hasn't, what would indicate? @DBJoe996 I'm not sure, car is at indy rn. Will have him check. Would that necessarily throw the CPS codes?

This is a source reference. Confirm exact model applicability in the original material.