STS Turbo Kit SES LIGHT FLASHING AT 5600 RPM
10-27-2004, 02:56 AM
#21
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Originally Posted by F8L Z71
Your AFR is freaking me out!
I agree with him.... U should tune this car and give it more fuel. The drop in power and blinking SES doesnt make sense to me unless u have really bad misfire, but usually the computer will store it as P0300 or something like that. Try unpluging the intake pipe that is coming from the turbo, open the exhaust and run the car N/A just to see if it will do the same without the turbo.
10-27-2004, 03:29 AM
#22
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just for ***** what springs are u running and what cam. Stock cam tends to fall on its face at 5600 or so. Then if you had stock springs with high miles it might start to have vavle float. Witch it looks like with that drop.
10-27-2004, 03:33 AM
#23
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Originally Posted by goober35
just for ***** what springs are u running and what cam. Stock cam tends to fall on its face at 5600 or so. Then if you had stock springs with high miles it might start to have vavle float. Witch it looks like with that drop.
10-27-2004, 05:28 AM
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Originally Posted by LSs1Power
I was thinking about valve float too, but that doesnt explain the SES light. Valve float will show on the dyno as a steep drop in power, but there shouldnt be SES light from valve float.
10-27-2004, 08:21 AM
#25
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I don't think it is valve float, all the STS kits seem to fall off right there. I would run a compression and leakdown test to make sure nothing is messed up. If you have been running it at 13:1 for a while, you may have hurt something.
-Geoff
-Geoff
10-27-2004, 08:39 AM
#26
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Is car LT1? I'd look into the cap and rotor and make sure ignition system is up to par. Optispark sucks to change but that is why they are usually bad as nobody ever changes them unless they are forced to. Very likely your ignition is finding a better path to ground than through the spark plugs. LT1's do alot better with MSD. Get the boost retard setup.
Valve float is a likely candidate as well. The extra pressures of boost on the valves don't help weak springs.
Your AFR's are way too lean. You should be mid 11:1's on low boost and at least that fat on the methanol. LT1 cars are usually fat on the stock tune. You may be running out of fuel. Check your fuel pressure, pump, and filter. You can also move the pipe going into the Maf closer to the Maf which should richen up the mixture (better to leave it back and adjust the PCM tune though if you have that capability).
Talk to you later,
Rick @ STS
www.ststurbo.com
Valve float is a likely candidate as well. The extra pressures of boost on the valves don't help weak springs.
Your AFR's are way too lean. You should be mid 11:1's on low boost and at least that fat on the methanol. LT1 cars are usually fat on the stock tune. You may be running out of fuel. Check your fuel pressure, pump, and filter. You can also move the pipe going into the Maf closer to the Maf which should richen up the mixture (better to leave it back and adjust the PCM tune though if you have that capability).
Talk to you later,
Rick @ STS
www.ststurbo.com
on the street -garrentied 
10-27-2004, 08:58 AM
#28
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broken springs will set the flashing ses, also just before my timing chain snapped I had a blinking ses as well. Anytime I had that blink it was multiple misfires. Transdammit just had one at the track and got it home and he had broken a spring and rocker arm.
10-27-2004, 12:48 PM
#29
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you are maxing out the MAF threshold, which causes ur car to run VERY LEAN which is causing multp misfires i'd say
i had the same exact problem... i'd just pop SES ligth once it would reach 5600 RPMs
i had the same exact problem... i'd just pop SES ligth once it would reach 5600 RPMs
10-27-2004, 09:43 PM
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I have only 27000 miles on the car. I did check compression, it came back good. it seems like the MAF maxing out at about 5600RPM and that costs the SES light to flash.I just put in ZO6 velve springs and manly pushrods. I think the problem is that I still have some torque managment alive. Mine is set to 550, and I think it is too low. I already make 515 on the rear wheel so it is supposed to be over 600 on the crank.
Any ideas??
Any ideas??
10-27-2004, 10:29 PM
#31
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Well, using single springs you would know if it was a spring or not, smack goes the valve.
pushrods nope.
Maxed MAF? When it was tuned, was the freq changed for the MAF? I cant see 8#s mxing a maf out unless it wasnt adjusted during the tuning!
Misfires like that *Should* set a ses, P0300.
as for KR, are you able to log any data, like IGN Timing & KR? If your getting the KR, it will set you into low octane mode, reducing timing etc... I am not sure what KR looks like on a dyno as I have been lucky enough to avoid any from tuning. Whats your timing at? And yes your AFR is too lean. 11ish on low boost, mid 10ish on higher is more comfortable.
pushrods nope.
Maxed MAF? When it was tuned, was the freq changed for the MAF? I cant see 8#s mxing a maf out unless it wasnt adjusted during the tuning!
Misfires like that *Should* set a ses, P0300.
as for KR, are you able to log any data, like IGN Timing & KR? If your getting the KR, it will set you into low octane mode, reducing timing etc... I am not sure what KR looks like on a dyno as I have been lucky enough to avoid any from tuning. Whats your timing at? And yes your AFR is too lean. 11ish on low boost, mid 10ish on higher is more comfortable.
11-03-2004, 11:29 PM
#32
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Dump that turbo kit and put nitro on it.
Do you put a shift kit in the trans?
If so maybe it was installed wrong and the trans
isnt working right, Check it out or you may need a rebuild soon
Do you put a shift kit in the trans?
If so maybe it was installed wrong and the trans
isnt working right, Check it out or you may need a rebuild soon
11-04-2004, 02:39 PM
#36
it's not the maf. i have the same problem my light starts flashing at 4400 rpm power falls right off too. i have stock cam and springs so i am changing those today. i'll let you know what happends
