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Porsche Boxster No fuel or injector pulse

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

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YOUR RESEARCHPorsche Boxster No fuel or injector pulse

Leading reported evidence

Check also) thanks

Performed · outcome unconfirmed

No successful repair reported for this finding.

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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.

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Performed · outcome unconfirmed · Original poster

had it checked also) thanks for the help I really appreciate it.

Porsche Boxster No fuel or injector pulse
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Leading evidence: 'Check also) thanks' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check also) thanks' (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.

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1 matching discussions · 16 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check with a noidlight and no pulse

Performed · outcome unconfirmed

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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
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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

injectors checked with a noidlight and no pulse.

Porsche Boxster No fuel or injector pulse

Replace cam sensors and crank sensor

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 have replaced my cam sensors and crank sensor.

Porsche Boxster No fuel or injector pulse

Replace ignition switch and fuel pump relay and it fired

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 replaced both ignition switch and fuel pump relay and it fired.

Porsche Boxster No fuel or injector pulse

Test good

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
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0
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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

()immobilizer tested good.

Porsche Boxster No fuel or injector pulse
Frequently discussed actions (10)

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

Check also) thanks

No successful repair reported for this finding.

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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.

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

had it checked also) thanks for the help I really appreciate it.

Porsche Boxster No fuel or injector pulse

Check fuel pump fuse.(that fuse is just

No successful repair reported for this finding.

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Discussions that contain suggestions
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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

And I assumed you check the fuel pump fuse.(That fuse is just for the pump not the trigger for the fuel relay.) Despite the fuel you see coming out of the line when you jumped the terminal, you need a fuel pressure gage to be accurate.

Porsche Boxster No fuel or injector pulse

Check relays swapped them around

No successful repair reported for this finding.

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Discussions that contain suggestions
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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 did check the relays swapped them around and cleaned and tested the points.

Porsche Boxster No fuel or injector pulse

Check with a noidlight and no pulse

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

injectors checked with a noidlight and no pulse.

Porsche Boxster No fuel or injector pulse

Replace cam sensors and crank sensor

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 have replaced my cam sensors and crank sensor.

Porsche Boxster No fuel or injector pulse

Replace crank position sensor at the flywheel

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

Check or replace the crank position sensor at the flywheel.

Porsche Boxster No fuel or injector pulse

Replace ignition switch and fuel pump relay and it fired

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 replaced both ignition switch and fuel pump relay and it fired.

Porsche Boxster No fuel or injector pulse

Test good

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

()immobilizer tested good.

Porsche Boxster No fuel or injector pulse

Test points

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 did check the relays swapped them around and cleaned and tested the points.

Porsche Boxster No fuel or injector pulse

Test relay and it seemed

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'm betting it was the ignition switch since I tested the relay and it seemed to be working.

Porsche Boxster No fuel or injector pulse
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.

16 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Pelican Parts: 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 2002 Boxster that has no fuel or injector pulse. I have jumped the fuel pump and it runs and has pressure but still no start. Car turns over and starts with starter fluid. I have replaced my cam sensors and crank sensor. had the DME rebuilt bu ecu doctors , still no start. im looking at a large tree over the car and sharpening my chain saw.....

POST 2Original post

Where did you jump the fuel pump to make the pump run? And you had the required pressure read on a fuel gage that was attach to the fuel rail?

POST 3 / ORIGINAL POSTEROriginal post

It was jumped at the fuel relay under the dash. I don't have a fuel pressure guage but having removed the line after running it there was tons of pressure there. injectors checked with a noidlight and no pulse.

POST 4Original post

Check your MFI-DI relay in the rear of your vehicle left side under the trim cover. Relay support Position 1. You are not getting power to you fuel pump relay I think according to what you telling me. And I assumed you check the fuel pump fuse.(That fuse is just for the pump not the trigger for the fuel relay.) Despite the fuel you see coming out of the line when you jumped the terminal, you need a fuel pressure gage to be accurate.

POST 5Original post

[COLOR="Blue"] And make sure all the fuses are checked. I can't remember but i think the MFI relay is powered through a maxi fuse in the distribution center. Don't take you chain saw out yet!/COLOR]

POST 6 / ORIGINAL POSTEROriginal post

I did check the relays swapped them around and cleaned and tested the points. Also the fuse under the dash is good. The relays clicks and switches off in the rear. then does it again in a few seconds. Ive been swapping the engine harness today should be done by tomorrow. the tech guy at ecudoctor seems to think it could be a short in the harness. if that's a nogo im going under the drivers seat and tracing the wires back to the motor from the immobilizer. something smells burnt under there. ()immobilizer tested good. had it checked also) thanks for the help I really appreciate it.

POST 7 / ORIGINAL POSTEROriginal post

Also if I was getting some fuel pressure I would get a partial start? i'm getting nothing.

POST 8Original post

Quotes source post: 7690666

You had said that you did not get a test pulse(light) at the injectors. if that is still the case then it won't start.Now it would only kick over if you introduce some fuel through the throttle body.

POST 9 / ORIGINAL POSTEROriginal post

That's correct it will diesel start when I spray into the throttle body for a few seconds. No pulse at the injectors. Almost done now with the other engine harness ive been installing.

POST 10 / ORIGINAL POSTEROriginal post

finished installing the wiring harness for the engine. Still same problem. I noticed a red light lit where the key symbol is on the center dashboard when i put the key in, is that normal? Also all my warning dash lights are lit when I am trying to start

POST 11Original post

Check or replace the crank position sensor at the flywheel. When it goes bad it cuts fuel to injectors.

POST 12 / ORIGINAL POSTEROriginal post

That was actually the first thing I did. I had a spare cps, compared readings on the test. they were the same then ordered a new one and compared again. all the same.

POST 13Original post

Quotes source post: 7691978

Yes the lights on your dash will stay on until the engine runs then will soon go out. I would still concentrate on why your not getting power to the injectors. Did someone suggest that the harness was the problem?

POST 14 / ORIGINAL POSTEROriginal post

Yea the guy that rebuilt the DME thought It might be the harness. I have a ignition electric switch coming in tomorrow. and a fuel pump relay on Thursday. gonna start cheap and simple. I just traced the W lead from the immobilizer to the trunk and it seems fine. Trying to find the K lead now. Don't know what it is. When I did the Autel scan these came up as problems with the immobilizer.

POST 15 / ORIGINAL POSTEROriginal post

She fired UP!!!!! I replaced both ignition switch and fuel pump relay and it fired. I'm betting it was the ignition switch since I tested the relay and it seemed to be working. Runs and drives great!! thanks for all the info. It really helped

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