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Old 03-10-2013, 07:45 AM   #1
mattysr20
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CAS issue

ok well I've searched and can't find the answer I'm looking for. my car has been broke down for months I've made other threads for other issues wich I fixed but still don't have car running. Last night I tested the power sources again I turned key on and had no power to my CAS. Why would I have 0 power? I have changed relays fuses and ecu so I dunno what else would cause this. Maybe I'm not testing it right I just used a test light I have a multimeter but have no clue how to use it lol. any help would be great thanx!



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Old 03-10-2013, 12:57 PM   #2
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I guess I should add I'm not getting spark or fuel
redtop Sr - stock
91 s13


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Old 03-11-2013, 12:33 PM   #3
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does the ecu light up? is it known to be a good ecu?

power to CAS is the black/white stripe wire. should get 12 volts to that one
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Old 03-11-2013, 12:59 PM   #4
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got the ecu used not 100% sure its good just figured the odds of getting another ecu with same problem was slim I checked that wire and all others and got nothing with key turned on


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Old 03-11-2013, 01:00 PM   #5
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and no it doesn't light up neither one does


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Old 03-11-2013, 09:19 PM   #6
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Is your ECU properly grounded?
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Old 03-11-2013, 11:15 PM   #7
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I would say yes but how would I know exactly? how does it ground? where is the ground


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Old 03-12-2013, 10:05 PM   #8
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It grounds via bunch of pins.. But I believe it goes to the intake mani. Or near battery. I haven't messed with oem harness in a while.
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Old 03-12-2013, 10:12 PM   #9
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Check your Relays, Check grounds, Check power to the ecu.
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Old 03-12-2013, 10:42 PM   #10
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I dunno how to check power to ecu relays are good


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Old 03-15-2013, 11:44 PM   #11
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ok I cleaned up all the grounds I could find I also took the top off of the ecu and poked around with a tests light I got power to a few of the pins but I'm not sure what they were also when I touched one of them it made a noise and the red light flashed for like a second but after that when I touched it it didn't do anything still no spark or power to cas so I dunno should I just change all my relays I changed 2 of them the egi and egi pump all fuses are good under hood.



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