no spark, leading or trailing
04-30-06, 03:44 PM
#1
That looks broken
Thread Starter
no spark, leading or trailing
so i have no spark leading or trailing. this is on a 88 gxl with 88 jspec t2 swap. using all n/a harnesses, 332 ecu. I tried swapping ecus, with no effect. I tried hailers trick with the spare CAS, and still no spark. so it must be wiring or the coils right? the coils were good before i did the swap so i figure that's not the problem. any help
04-30-06, 04:13 PM
#2
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
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Should have had spark.
Either the ENGINE fuse is blown or if it's not, check and see if you have 12vdc on the small, white, two wire plug at the LEAD coil assy. Just check the Black/Yellow wire. LEave the other wire completly alone.
Standard Question: do you see a bump of the tach needle when you try to start the car?
But then you said you tried the spin of the cas and you got nothing, so that's almost not worth looking at.
I've no belief that the coils wient south. About the only way I could figure something like this out is to check that black/yellow wire with a meter.
The only other thought is about the harness. Make sure the plugs are attached at the ECU. No doubt they are. But remember the other two dark yellow plugs on that harness but located up above and to the right of the passengers feet? Make sure they are fully connected.
Let me know if you do not have a meter and maybe there is Some other way to prove if 12v exists at the coils.
LAST but not least. The ECU has three grounds. Thoses grounds are NOT near the ECU. They are located on TOP of the REAR rotor housing and I think you have to remover the intake manifold to see if they are on. They are on a RING terminal and held down with one bolt. No ECU ground equals the same results as no voltage at the ECU/coils.
CAS PLUGGED IN? engine FUSE installed? Both EGI COMP and EGI INJ installed?
Either the ENGINE fuse is blown or if it's not, check and see if you have 12vdc on the small, white, two wire plug at the LEAD coil assy. Just check the Black/Yellow wire. LEave the other wire completly alone.
Standard Question: do you see a bump of the tach needle when you try to start the car?
But then you said you tried the spin of the cas and you got nothing, so that's almost not worth looking at.
I've no belief that the coils wient south. About the only way I could figure something like this out is to check that black/yellow wire with a meter.
The only other thought is about the harness. Make sure the plugs are attached at the ECU. No doubt they are. But remember the other two dark yellow plugs on that harness but located up above and to the right of the passengers feet? Make sure they are fully connected.
Let me know if you do not have a meter and maybe there is Some other way to prove if 12v exists at the coils.
LAST but not least. The ECU has three grounds. Thoses grounds are NOT near the ECU. They are located on TOP of the REAR rotor housing and I think you have to remover the intake manifold to see if they are on. They are on a RING terminal and held down with one bolt. No ECU ground equals the same results as no voltage at the ECU/coils.
CAS PLUGGED IN? engine FUSE installed? Both EGI COMP and EGI INJ installed?
04-30-06, 04:51 PM
#3
That looks broken
Thread Starter
alright for whatever reason car is sparking now. i didn't know the egi inj killed spark but once i put it in it started sparking. i thought it just kill the fuel pump. but... now i don't hear the fuel pump priming when i put the key in. if i pull the fuel pump connector it runs for a second then dies. closer though .. . 
04-30-06, 05:00 PM
#4
HAILERS
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Location: FORT WORTH, TEXAS,USA
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EGI INJ stands for EGI injectors, as in the feed for the injectors.
Fuel Pump runs:
Key HELD to START.
Key to ON and the engine actually running. Engine must be running.
Key to ON and the fuel pump check connector jumpered. Engine doen not have to be running in this case.
The fuel pump does not run at all with the key to ON. No priming action at all. Priming happens with the key HELD to START only.
IF the key is ON, and the jumper installed, the pump should run continuously. You should hear the flow back into the tank from the fpr and if hearing is good, hear the fuel pass thru the rail.
IF this is a JSPEC engine in a USA car, the fuel lines are opposite at the engine. The hose from the filter goes to the aft fuel pipe on a JSPEC but to the front pipe on a USA. You might try to take a look at those lines.
Fuel Pump runs:
Key HELD to START.
Key to ON and the engine actually running. Engine must be running.
Key to ON and the fuel pump check connector jumpered. Engine doen not have to be running in this case.
The fuel pump does not run at all with the key to ON. No priming action at all. Priming happens with the key HELD to START only.
IF the key is ON, and the jumper installed, the pump should run continuously. You should hear the flow back into the tank from the fpr and if hearing is good, hear the fuel pass thru the rail.
IF this is a JSPEC engine in a USA car, the fuel lines are opposite at the engine. The hose from the filter goes to the aft fuel pipe on a JSPEC but to the front pipe on a USA. You might try to take a look at those lines.
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