15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHErratic idle and cuts out
Leading reported evidence
Run really well generally at higher revs
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
In my case, I did notice that low rev response was a bit sluggish, (worse when hot) but ran really well generally at higher revs.
Leading evidence: 'Run really well generally at higher revs' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean by opening it' (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 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
It was easy to remove and clean, by opening it with a 9V battery and a couple of wires and plenty of carb cleaner.
Replace chain tensioners, and sundry plus full service
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
Replace chain tensioners, and sundry plus full service
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K.
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
As per title, the car 1999 C4 Egas throttle.
when hot has an erratic idle and very occasionally cuts out, things I've tried:
Cleaned the MAF and the throttle body, not much change
I've unplugged the MAF no change
I've tried resetting the system by switching the ignition but not so the engine runs and letting it reset following a procedure! No change.
Oil air separator, tried removing oil cap whe hot and it screws off ok, with a release of a little pressure.
The only thing I can think of is air leak somewhere or the idle valve, and I think that is a ***** to get too.
Any suggestions? Thanks in advance
So a 99 is a non cable throttle?
My erratic idle on my cable throttled 98 was a filthy idle control valve. It was easy to remove and clean, by opening it with a 9V battery and a couple of wires and plenty of carb cleaner.
I don't think you get a fault code from it, but if it's a proper Porsche tester your indy should be able to actuate each solenoid at tickover with his gizzmo. When they do, they should be able to diagnose its faulty.
Hi Baron,
I had a Variocam solenoid failure last year and the Indy picked the fault up right away by the system having thrown up a fault code.
You don't describe how the car is running generally other than a rough idle / cut out. In my case, I did notice that low rev response was a bit sluggish, (worse when hot) but ran really well generally at higher revs. It was therefore a pig in slow moving traffic. If you have similar symptoms it could point to the solenoid failure. Have these symptoms just suddenly appeared, or have they gradually got worse? In my case, it was a noticeable difference in the low rev running over a couple of days, so I had to get it sorted out.
I would take the car to an Indy for a fault code reading. It could be as you say, an air leak in the system or something else relatively minor. Does the tickover change when you remove the fuel filler cap?
Best of luck with your diagnosis.
Hi Bluebird, it's been gradual but seem to have got any worse, it's fine in slow moving traffic, low revs and high revs.
Can I ask how much it cost to sort out the solenoid?
Thanks
Hi Baron,
Just dug out my invoice for the work.
Code was DTC P1341 Cam Adjuster Bank 1. There was no Check Engine light on the dashboard! The Cam adjuster stuck in the extended position. Apparently it extends to this position beyond 3000rpm, so I was running on a 'hot cam' at engine speeds lower than 3000rpm - hence the lumpiness at lower revs. If yours is not displaying this, it may be some other fault.
I'm afraid I can't give you a good price indication as I decided to get a lot of extra work done. Some Indys do the work with engine and gearbox in situ at a reasonable price. I wanted to futureproof my car, so while the engine came out, may as well do big jobs while it's out and the engine open - which I now believe was a wise thing to do.
I had replace IMS, replace RMS, Aircon pipework overhaul (wasn't working), remove exhaust manifolds and restud, replace waterpump and all hoses to rads etc, replace all earthing straps and alternator wiring, over gearbox brake pipe work replacement, replace oil air separator, replace oil filler tube and oil cooler tubes, replace chain tensioners, and sundry plus full service for just over £5.5K. While it's a big bill, there shouldn't be anything to do for the foreseeable and it is running really well now.
At the time I was thinking of keeping it a while, but that plan may have changed!!
Alex's price indication for the part is the same as mine. It looks like his price is an engine in situ one, so I would use his Indy if your problem turns out to be the solenoid.
If it's fine in slow moving traffic, I suspect it may not be the cam adjustment! I've had wild cams in escorts back in the day, it wasn't as bad as that, but had similar symptoms. I wasn't surprised when the diagnosis came through!
Hi thanks for posting the video, good reference point, mine is not like that at all, so hopefully something simpler and cheaper to sort, but it's not to say that it won't end up like yours if it is the solenoid gradually deteriorating.
This is a source reference. Confirm exact model applicability in the original material.
