What is your idle speed?
Thread Starter
Registered User
Joined: Mar 2001
Posts: 2,170
Likes: 0
From: Richmond
Originally posted by jazzboss
Idle speed depends on many parameters. If you've got some lights on, the alternator is asking for power from the engine, so the revs rise slightly. Same for other things like the A/C.
Fundamentally though, when the engine is cold the ECU is raising the engine revs to warm up the engine on max effectiveness. A cold engine would not stay happily at 700 or less rpm, and it would probably stall. If you leave it for a couple of minutes you will notice the engine revs slowing down progressively as it gets hotter.
I take it that you guys are not warming up your cars enough, since you haven't experienced this...I suggest you try warming up the car from cold, 2-3 minutes everytime. For the sake of your engine that is...
Idle speed depends on many parameters. If you've got some lights on, the alternator is asking for power from the engine, so the revs rise slightly. Same for other things like the A/C.
Fundamentally though, when the engine is cold the ECU is raising the engine revs to warm up the engine on max effectiveness. A cold engine would not stay happily at 700 or less rpm, and it would probably stall. If you leave it for a couple of minutes you will notice the engine revs slowing down progressively as it gets hotter.
I take it that you guys are not warming up your cars enough, since you haven't experienced this...I suggest you try warming up the car from cold, 2-3 minutes everytime. For the sake of your engine that is...
Anyone have a rock-solid idle?
Registered User
Joined: May 2001
Posts: 64
Likes: 0
From: London
How about this: The car was meant to run with the higher octane possible (near 100 I mean...). This means that 93 octanes are causing extra knocking which the ECU has to compensate for. Have you tried higher octane fuel?
Thread Starter
Registered User
Joined: Mar 2001
Posts: 2,170
Likes: 0
From: Richmond
Originally posted by jazzboss
How about this: The car was meant to run with the higher octane possible (near 100 I mean...). This means that 93 octanes are causing extra knocking which the ECU has to compensate for. Have you tried higher octane fuel?
How about this: The car was meant to run with the higher octane possible (near 100 I mean...). This means that 93 octanes are causing extra knocking which the ECU has to compensate for. Have you tried higher octane fuel?
Can you get 100 octane at the pump in Europe?
Banned
Joined: Oct 2000
Posts: 1,712
Likes: 0
From: Chicago
I know of several places to get 100 octane near me. You just have to search for it.
Also, I don't believe our car will benefit from this too dramatically. Might be good for FI to reduce teh threat of detonation, however.
Also, I don't believe our car will benefit from this too dramatically. Might be good for FI to reduce teh threat of detonation, however.
Registered User
Joined: Feb 2001
Posts: 1,299
Likes: 0
From: Palm Springs
If my car is cool and i first turn it on it idles at about 2000 for about 20 seconds.. then 1,500... then 1000 untill the car is warmed up properly... then it will slowly bounce around between like 800 and 1000