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On a 1993 Subaru if the 3 and 4 spark plugs are not sparking but the 1 and 2 are and you've replaced the plugs and coil pack what could be wrong?
Wiki User
∙ 17y ago
If there are no trouble codes set by the diagnostic output then it will be a faulty computer. ==New Answer== I had this happen to my 1991. However, I cannot think of the name of the part, but it is located on the firewall center. It is held on by 1 or 2 screws and has two wires connected to it. It allows the injectors to work in pairs. It usually goes bad just one side at a time, allowing one side to work. Two will fire, two will not.
Wiki User
∙ 17y ago
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