All of a sudden I've been getting a random det warning (CEL flashing). It doesn't do it all the time but when it does, its just above 4K rpm, doesn't seem to matter whether its set at 1bar or 1.2. Most of the time it'll pull quite happily to the redline. I wondered if it could be a bad tank of V-Power but I've filled up again (from 1/2 tank) and added an octane booster. Could it be the knock sensor? What about plugs/dizzy cap/rotor arm? Its due a set of plugs anyway. Back in the winter it would have a slight missfire occasionaly in the cold/damp before fully warmed up. Other thing to mention is a slightly slipping alternator belt which is being replaced this week - surely that couldn't affect it?
Rev 3
Apexi PowerFC
HKS Exhaust
Berk Downpipe
ST205 CC
Other than that the car runs beautifully and pulls well.
Thanks in advance
Al
[Mk2] [Turbo] Strange Det problem
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Re: [Mk2] [Turbo] Strange Det problem
is it a flashing cel light?
if your running a powerFC, this is used to warn of high knock readings....
seems to me you may require a slight remap.
i asume you dont have the commander?
if your running a powerFC, this is used to warn of high knock readings....
seems to me you may require a slight remap.
i asume you dont have the commander?
Re: [Mk2] [Turbo] Strange Det problem
Yeah, it'll be the knock warning, I don't have the commander. Why would it start all of a sudden?
Re: [Mk2] [Turbo] Strange Det problem
hard to say, more warn rings/to much advance.....(now thw weather getting warmer)
could even be some ghost knock, it maybe picking a sound up from somewhere and confusing that as knock.
one for the tuners really.
could even be some ghost knock, it maybe picking a sound up from somewhere and confusing that as knock.
one for the tuners really.
Re: [Mk2] [Turbo] Strange Det problem
I wondered about warmer weather but have tried running at night in cool air. Could ghost knock come from a slipping alternator belt? How much vibration would be required? Do knock sensors get more sensitive before they fail? I'd have thought that turning the boost down would improve if it was genuine knock but it makes no difference.
Re: [Mk2] [Turbo] Strange Det problem
im not entirely sure...
would speak to your tuner tbh....
would speak to your tuner tbh....
Re: [Mk2] [Turbo] Strange Det problem
He suggested I ask here first, I'll have another chat with him tomorrow, the problem is he's not exactly local.
Re: [Mk2] [Turbo] Strange Det problem
A slipping alternator belt could well be the problem.
Can you check/log the voltages with the ECU?
If the alternator is not providing enough voltage at full load, the fuel pump could be struggling to keep up and not provinding enough flow/fuel pressure and may be running lean.
I had this on my car, where the alternator was fine to 7k, but after that till 8.7k it would drop the voltage and i visibally watched the fuel pressure drop at higher rpm and then running lean.
Does the commander show/log voltage?
Can you check/log the voltages with the ECU?
If the alternator is not providing enough voltage at full load, the fuel pump could be struggling to keep up and not provinding enough flow/fuel pressure and may be running lean.
I had this on my car, where the alternator was fine to 7k, but after that till 8.7k it would drop the voltage and i visibally watched the fuel pressure drop at higher rpm and then running lean.
Does the commander show/log voltage?
TOTB 2010 Rwd top speed, 1/4 and shootout winner.
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile....
10.7@142 on R888 street tyres, 10.3@134mph on slicks,
9's on slicks to come, with a clean full throttle pass! Goal of 0-150mph in a 1/4 of a mile....
Re: [Mk2] [Turbo] Strange Det problem
I don't have a commander unfortunately but i'm changing the belt at the weekend anyway so we'll see what happens.
Many thanks!
Al
Many thanks!
Al
Re: [Mk2] [Turbo] Strange Det problem
New plugs and alternator belt seems to have done the trick! fixed a slight boost leak as well so less lag!