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Porsche Club GB

Engine will only tick-over

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHEngine will only tick-over

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Check done

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Suggestion

You really need to get a diagnostic check done with a Porsche tester.

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Engine will only tick-over
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Leading evidence: 'Check done' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check done' (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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Check done

No successful repair reported for this finding.

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Reported fixes
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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.

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Suggestion

You really need to get a diagnostic check done with a Porsche tester.

Original post Read captured discussion
Engine will only tick-over
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3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Porsche Club GB: 1 discussions

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Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Sorry to repeat myself but I'm getting very concerned as engine fires up OK but will only tick-over, irrespective of throttle action. Ambles up to around 1500 revs and that's it. Seems reasonable to suspect it's to do with the fly-by-wire throttle, but what? Only happened after leaving the car for 3-4 weeks and prior to that absolutely no problems.

POST 2Original post

You really need to get a diagnostic check done with a Porsche tester. It could be either the throttle potentiometer on the pedal, or the actuator on the throttle body. Or it could be a fault in the DME module itself, MAF, or other sensor. Without a diagnostic test you would be shooting in the dark, unfortunately. Sorry I can't give you a definite answer, or a simple solution, but I don't think there is an obvious one, other than looking around the engine compartment for something that has become disconnected.

POST 3 / ORIGINAL POSTEROriginal post

I had the Porsche man around a week ago, who plugged in the magic box and came up with 'fault 402 / e-gas throttle valve position error'. He wasn't able to do anything on the day, and due to the lousy weather I was none too bothered. However, he came again today, and checked again before removing the unit, only to find no fault! Car starts just fine, and I've been out this afternoon and the old girl runs like a bird. My only concern is that it is an intermittent fault, but at least I know what it is. Why it suddenly came, then went is a mystery, but at least Goodwood tomorrow, weather permitting, looks like a go-er.

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