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Re: need help with 30 amp fuse / asd relay
the problem showed up upon start up after the head was replaced. we have ohmed out all the wires to the different systems on that fuse, O2 sensors, ign system, fuel system. we opened up the loom on the passenger side and didn't see anything burnt or pinched. we bypassed the harness by going from 12v to the coils , at the time we installed a 20amp fuse in line with the coils and now it blows instead of the 30 amp.
The next step is to break the coils down into pairs with a fuse on each set of two to see if we can narrow it down even more.
When we checked the relays to see if they were in spec(50 to 80 ohms). we found 3 that were over, After replacing them, the engine would just shut off after about 5 minutes ,not blow the 30 asd fuse, When started right back up then it would blow the fuse.
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