SES light will not come on with KOEO
06-11-2006, 08:03 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
SES light will not come on with KOEO
I just installed a coolant temp senor on my 89 iroc and now when i tried to start my car it just turns over and the ses light does not come on and i dont hear the fuel pump prime at all. Does anyone have any ideas I am going to try and check some relays. All of my fuses under the fuse panel is good.
06-11-2006, 09:14 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
Is there some kinda fuse for the pcm because this probably all started when I was filling my radiator back up i spilled a little water near the battery. 
06-11-2006, 09:47 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
Thanks Vader. How do i check that fuse?
Last edited by Ant; 06-12-2006 at 12:00 AM.
06-11-2006, 10:28 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
I removed the fuse I think this is the problem looks all burnt up I will buy a new one tommorrow here are the pics.
06-11-2006, 10:30 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
Here is the outside, the last pic It is up side down
Last edited by Ant; 06-11-2006 at 10:47 PM.
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06-11-2006, 10:49 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
I think mine went with extra crispy
06-11-2006, 11:05 PM
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Car: 1992 Camaro Z28
Engine: 5.7 LT1
Transmission: 4L60
Axle/Gears: 3.23's
haha, ya man gotta love these old thirdgens. I remember when I had my old wiring setup (I now have a Painless) that I would burn up fuses everytime I floored the car, ahh yes what a lovely period that was carrying a box of fuses with me when I went racing.
06-12-2006, 12:03 AM
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
thats the fan relay not the ecm fuse
06-12-2006, 10:40 AM
#14
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Car: 1992 Camaro Z28
Engine: 5.7 LT1
Transmission: 4L60
Axle/Gears: 3.23's
No, I believe that is the fuel pump relay. I cannot make out the number that well but, if the fuel pump isnt priming when the ignition is on that would make sense that its the fuel pump relay. Good way to find out is turn to ON and see if fan comes on, in my car the fan always comes on when I turn the ignition to ON.
06-12-2006, 12:04 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
Well come to find out that didn't solve the starting problem. How can you check if you fried your computer.
06-12-2006, 01:06 PM
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Car: 1989 Iroc-z 1994 Z28 LT1
Engine: 5.7 Liter L98 Tuned Port Injection 5.7 LT1
Transmission: 700R4 and 4L60E
Found the problem it was the fuse between the radiator and the battery here is the pic just in case any one else has this problem. Now the iroc is back on the road.
06-12-2006, 05:33 PM
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Car: 1992 Camaro Z28
Engine: 5.7 LT1
Transmission: 4L60
Axle/Gears: 3.23's
Hmm too bad you found that out after you bought the new relay. But bottom line is with these cars your fortunate to get away just replacing a fuse. When it comes to money pits and bad luck Im the guy to talk to.
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