8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH1999 C4 No Start Diagnosis
Leading reported evidence
Check fuses
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
Checked all the fuses, replaced two (cigarette lighter and headlight washers)
Leading evidence: 'Check fuses' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check codes in the am' (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
Just replaced the crank position sensor with a new one and still nothing.
Replace two (cigarette lighter and headlight washers)
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
Checked all the fuses, replaced two (cigarette lighter and headlight washers)
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.
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.
8 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Turo rentals have been fun for the last two weeks but I really need to get my 99 running again.
1999 Carerra 4 Cabriolet 5spd w/ 175,000mi
Driving to work on a rainy morning the engine stopped quite suddenly. No sputtering just off like a switch.
The engine cranks over fine and I have confirmed fuel pressure ~60psi. So I believe it is a no spark scenario. Spraying starting fluid in the intake also does nothing when cranking.
Just replaced the crank position sensor with a new one and still nothing.
I have a new cam position sensor which I haven't installed yet. do they suddenly fail and cause a no start or run condition?
I'm also thinking about the immobilizer under the seat. If it is faulty will it still allow me to crank the engine?
Appreciate any tips as I continue to diagnose this guy.
Many thanks
Don't start throwing parts at it hoping something sticks.
Usually an issue with the immobilizer affects the windows, radio, and cranking. Never hurts to check it though. I always check the easy stuff first.
Is it throwing any codes?
When it cranks, it sounds completely normal? Just doesn't start?
Probably not Immobilizer, it usually effects cranking.
It may sound silly but check the fuses, there is one named "engine electronics" that can blow for various reasons and cause a "no start"..
I only have an OBD code reader and nothing is logged on the ECU, I'm sure any codes that were in there were cleared when I had the battery disconnected.
Checked all the fuses, replaced two (cigarette lighter and headlight washers)
Cranking sounds normal
@Porschetech3
I owe you a case of your favorite brew. Fuse C2 (Ignition, fuel injection, oxygen sensor heating) was blown. Not sure how I missed it the first time round. She is running again! Many thanks to the community here.
Any common causes for a blown C2 fuse? I was driving in the rain and went through a good sized puddle at speed when it blew..
Coors "Silver Bullets" has been my favorite beer since the mid 70's when it was "Bootlegged" into Alabama, (hence the movie Smokey and the Bandit)..
Fuse C2 goes to a relay that powers up the 4 oxygen sensor heaters, 6 fuel injectors, 6 coils.
I would start by looking at the 02 sensor heaters, drive it a little and scan for codes.
A short anywhere in the wiring or injector, coil, 02 sensor will blow the fuse.
If you had a Durametric or PIWIS, you could see the 02 sensor heater resistance values and it could possibly speed up the diagnosis..
There is a good possibility that the water puddle contributed to the short circuit..
This is a source reference. Confirm exact model applicability in the original material.
