CaddyMcCadillac Posted April 16, 2011 Report Share Posted April 16, 2011 I have a '95 Seville STS, I originally replaced the #7-8, and the #1-4 ignition coil packs because they were barely firing (I used an extra plug and wire to see if there was any spark, it produced a very slight arc to a ground point). I replaced the two affected coil packs 3 weeks ago, and the car ran like it was new again. A few days ago, it started running bad again. I checked the 2 remaining packs, put a new $100 plug wireset, another new set of plugs, fuel system cleaner, fuel and air filters, and did a complete injector and rail cleaning, only to get 7mpg. I spent all nite checking vacuum lines, connections and performing other tests. I finally checked the 2 new coil packs only to find out that they are not producing any spark whatsoever, I exchanged them under their warranties, but to my embarassment, the 2 new ones are not firing either. Could someone !PLEASE! let me know what tests or checks I need to perform, or is it as simple as a fuse or code reset. These part store books are no help and the local mechanics all want to run $75 dollar diagnostic tests just to SEE if they can tell if there is a problem. (the local auto electric business folded about 5 years ago and the only 2 dealerships in town are Toyota and Ford) I would have to take out a bank loan for fuel to drive the 128 miles, on 4 cylinders(1-way) to the nearest Cadillac dealership. ANY suggestions from anyone having knowledge about this topic, would be greatly appreciated. THANK-YOU Link to comment Share on other sites More sharing options...
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