Does anyone else wait when starting your car?
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
I know for a fact that it's harmless to wait, and never said/implied otherwise. 
Necessary or even desirable? Meh, not so much.
Waiting for the fuel system to pressurize is the only real rationale I've seen, but I doubt that takes anywhere near as long as the gauge sweep.
Necessary or even desirable? Meh, not so much.Waiting for the fuel system to pressurize is the only real rationale I've seen, but I doubt that takes anywhere near as long as the gauge sweep.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
You're right, I don't know for a fact that it's harmless to wait for the gauge sweep to finish. For all I know it's the cause of all the C5 problems people have reported here. Happy now? 
That aside, the number of diagnostic procedures in the FSM that require key-on-engine-off makes "harmless" a rather reasonable assumption.
That aside, the number of diagnostic procedures in the FSM that require key-on-engine-off makes "harmless" a rather reasonable assumption.
Le Mans Master
Joined: Oct 2013
Posts: 7,100
Likes: 541
Never gave this much thought. In fact I cannot recall exactly what the gauges do once the key is on. I guess I am not terribly observant of these things.
I do however, if the car has not been run in a while, put the accelerator to the floor and crank the engine to get some oil to the top end. As long as it is to the floor the car will not start. No I have no idea why but I am sure some will tell me.
I will keep and eye on the instruments next time.
I do however, if the car has not been run in a while, put the accelerator to the floor and crank the engine to get some oil to the top end. As long as it is to the floor the car will not start. No I have no idea why but I am sure some will tell me.
I will keep and eye on the instruments next time.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
You're right, I don't know for a fact that it's harmless to wait for the gauge sweep to finish. For all I know it's the cause of all the C5 problems people have reported here. Happy now?
That aside, the number of diagnostic procedures in the FSM that require key-on-engine-off makes "harmless" a rather reasonable assumption.
That aside, the number of diagnostic procedures in the FSM that require key-on-engine-off makes "harmless" a rather reasonable assumption.
Last edited by JR-01; Jun 23, 2015 at 03:52 PM.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
Given that it's a "fly-by-wire" throttle, I have no idea why it would matter.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Never gave this much thought. In fact I cannot recall exactly what the gauges do once the key is on. I guess I am not terribly observant of these things.
I do however, if the car has not been run in a while, put the accelerator to the floor and crank the engine to get some oil to the top end. As long as it is to the floor the car will not start. No I have no idea why but I am sure some will tell me.
I will keep and eye on the instruments next time.
I do however, if the car has not been run in a while, put the accelerator to the floor and crank the engine to get some oil to the top end. As long as it is to the floor the car will not start. No I have no idea why but I am sure some will tell me.
I will keep and eye on the instruments next time.
2. If it doesn't start within 10 seconds, push accelerator all the way to the floor, while you hold ignition key in START. When the engine starts, let go of the key and let up on the accelerator pedal. Wait about 15 seconds between each try.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
It sure sounds you're busting my chops because I agreed with you: I thought ET was the only one who did that.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
If any of what is fact? The fact that the car will start whether you wait for the sweep or not? Or the fact that the engine won't blow up if you leave the key on too long before you start it? Pick a story and stick to it.
It sure sounds you're busting my chops because I agreed with you: I thought ET was the only one who did that.
It sure sounds you're busting my chops because I agreed with you: I thought ET was the only one who did that.
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Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
What I did say was that it is harmless to wait, which seemed to twist your panties in a knot for no apparent reason. Proven fact? No, assuming you're willing to ignore the complete absence of evidence to the contrary. I hope for your sake that it is a fact, since you seem to believe it's not only harmless but beneficial.
Le Mans Master
Joined: Oct 2013
Posts: 7,100
Likes: 541
I know in the manual that it says to put the pedal to the floor if the car will not start but I can tell you for certain it will not. The motor cranks, I get oil pressure and then I take my foot off the pedal and it starts immediately.
I believe it is the same thing on C6. I would not say anything about this if I thought someone would damage their motor. Mine simply does not start.
I believe it is the same thing on C6. I would not say anything about this if I thought someone would damage their motor. Mine simply does not start.
Thread Starter
Racer
Joined: Mar 2013
Posts: 477
Likes: 48
A while back I had the dreaded "service ABS/Traction control" rear it's ugly head and it reset itself after turning it off & back on again-it did it again a few days later. That was over a month ago and since then when I get in to start it I turn the ignition on and wait about 15 seconds for all the bells, whistles, pumps etc to settle down and then I fire her up- and the car has behaved perfectly with no codes remotely related to the EBCM since. Does anyone else take the time to do this and have you had the same result? Not sure if it really has a bearing on anything but so far so good. Mine's a 2002 coupe w/90000 miles.
So, I figure - if it works, keep on doin' it.
If & when the codes ever return by starting in this manner, you guys will be the next to know.
Heel & Toe
Joined: Jun 2015
Posts: 22
Likes: 0
I had a similar problem. It ended up being my alternator. It was spiking up to 18 volts. Everytime it did this my gauges blinked off and my dash reset and was blinking waiting for input on all the settings. Replacing the alternator fixed everything.
