wiring harness question

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1lowhatch
Posts: 30
Joined: Tue Mar 11, 2008 2:49 pm
Car: 1990 Nissan 240sx

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After my rebuild i tried to get the car started but nothing its all in time and all that good stuff. so i pull my coils and no spark whatsoever and i hooked everything up right, the clip that gos onto the cam position sensor when i wiggle it around it makes the noise like whenever you disconnect it. so if i find the wire is that fixable by replacing the wire or would i have to get a whole new harness?


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Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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I would just peel back the harness and replace the CAS plug. You can scavange one off of a KA harness.

You can fix just about anything in a wiring harness without a total replace. Sometimes, tracking the broken wires can be a PITA.

Also, how do you know you're in time if you don't have spark? It's hard to get a timing light working if there's no spark going through the first coil.

Before you go replacing random plugs, I would consider doing some continuity tests on your ignitor plugs (primarily the ground), coil pack harness, and CAS plug. Also, make sure you're getting voltage to your ECU. The coils and the ECU tap off the same 12v power signal IIRC.

1lowhatch
Posts: 30
Joined: Tue Mar 11, 2008 2:49 pm
Car: 1990 Nissan 240sx

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well i like guestimated with the cas by matching the mating points, and how do u run a timing light on the coils i tried last night and couldnt figure it out, but my guess is its a bad wire because whenever i wiggle the wire it buzzes like whenever you disconnect the clip from the cas

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david200095367
Posts: 1632
Joined: Mon Mar 29, 2004 7:57 am
Car: 91 fastback 93 coupe w/s14 sr20det 98 s14 kouki

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i had this problem. I had a broken wire right at the cas plug. Some times it would make contact and start and then sometimes no.


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