ses light with engine running
Thread Starter
Racer
Joined: Feb 1999
Posts: 394
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From: Amberg, Germany
ses light with engine running
i got a post in my cold start/ idling post that says to check the ses light flshes by jumper the a+b connectors with the engine running.
the ses is blinking very fast 2-3 times a second.
what does that mean ?
frank
the ses is blinking very fast 2-3 times a second.
what does that mean ?
frank
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: ses light with engine running (Frank92)
Let the engine idle for a few minutes and the flashes should slow to about 1/sec.
If the On/Off flashes are of equal duration (On=rich; Off=lean) the mixure is fine. If On is longer than Off the mixture is rich; if Off is longer than On the mixture is lean.
[Modified by 65Z01, 12:04 PM 4/10/2002]
If the On/Off flashes are of equal duration (On=rich; Off=lean) the mixure is fine. If On is longer than Off the mixture is rich; if Off is longer than On the mixture is lean.
[Modified by 65Z01, 12:04 PM 4/10/2002]
Thread Starter
Racer
Joined: Feb 1999
Posts: 394
Likes: 0
From: Amberg, Germany
Re: ses light with engine running (65Z01)
now i think i "almost" solved my cls start idling/stalling problem.
i did the ses check with engine on.
at idling the ses blinks not regular, 2 sec. on... 3 sec. off ....1 sec. on 5 sec. off ans so an. when i go up to 1500 rpm + it blinks regular.
i resume i have a "fuel related rroblem". lines , pressure, pump relay... what can i check DIY.
Maybe i have a bad ground somewhere but how to find ?
I can hear the fuel pump when i start the car (ignition on). i think it lasts more than 3-5 seconds, before the problems it last schorter i think.
maybe i realy have a crimped fuel line since the mechanic lifted the car. Are there fuel lines routed under the car ?
I also watched the area aroung the gas filler neck. Corroded lines there not nice. here is the url: http://www.asamnet.de/~wanhoffr/corrosion.jpg
frank
i did the ses check with engine on.
at idling the ses blinks not regular, 2 sec. on... 3 sec. off ....1 sec. on 5 sec. off ans so an. when i go up to 1500 rpm + it blinks regular.
i resume i have a "fuel related rroblem". lines , pressure, pump relay... what can i check DIY.
Maybe i have a bad ground somewhere but how to find ?
I can hear the fuel pump when i start the car (ignition on). i think it lasts more than 3-5 seconds, before the problems it last schorter i think.
maybe i realy have a crimped fuel line since the mechanic lifted the car. Are there fuel lines routed under the car ?
I also watched the area aroung the gas filler neck. Corroded lines there not nice. here is the url: http://www.asamnet.de/~wanhoffr/corrosion.jpg
frank
Thread Starter
Racer
Joined: Feb 1999
Posts: 394
Likes: 0
From: Amberg, Germany
Re: ses light with engine running (65Z01)
hello 65Z01,
they are not of equal duration at idling (erratic idling). just above 1500 rpm they are equal. what should i check first air/fuel ratio problem.
maybe the iac is the problem.
frank
they are not of equal duration at idling (erratic idling). just above 1500 rpm they are equal. what should i check first air/fuel ratio problem.
maybe the iac is the problem.
frank
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: ses light with engine running (Frank92)
Though the use of the ALDL is the same as on my L98, I'm not familiar with the LT-1 engine.
Did you check for codes by just turning the ingition On and counting SES flashes, without starting the engine?
If you have an IAC under the TB, pull the IAC motor and clean the pintel and it's bore. Also clean the TB and throttle plates with some TB cleaner (don't use carb cleaner).
If you still have problems, get a vacuum gauge and check manifold vacuum at idle. It will tell you if you have air leaks. Also inspect all vacuum lines for integrity.
BTW, having a Corvette in Germany must even rarer than a 911 here. I wish I could get my Vette on some of your highways.
[Modified by 65Z01, 3:27 PM 4/10/2002]
Did you check for codes by just turning the ingition On and counting SES flashes, without starting the engine?
If you have an IAC under the TB, pull the IAC motor and clean the pintel and it's bore. Also clean the TB and throttle plates with some TB cleaner (don't use carb cleaner).
If you still have problems, get a vacuum gauge and check manifold vacuum at idle. It will tell you if you have air leaks. Also inspect all vacuum lines for integrity.
BTW, having a Corvette in Germany must even rarer than a 911 here. I wish I could get my Vette on some of your highways.
[Modified by 65Z01, 3:27 PM 4/10/2002]
Thread Starter
Racer
Joined: Feb 1999
Posts: 394
Likes: 0
From: Amberg, Germany
Re: ses light with engine running (65Z01)
i checked the codes with engine off. no codes stored.
i will pull the IAC motor and clean the pintel tomorrow. i hope i can do this without destroying anything. do you remeber how to get it out easy ?
frank
i will pull the IAC motor and clean the pintel tomorrow. i hope i can do this without destroying anything. do you remeber how to get it out easy ?
frank
Thread Starter
Racer
Joined: Feb 1999
Posts: 394
Likes: 0
From: Amberg, Germany
Re: ses light with engine running (Frank92)
i never found anything in the manual about the aldl check with thengine running. are there any trouble codes for this procedure in the net ?
i have them just for the engine off procedure.
frank
i have them just for the engine off procedure.
frank
