Well my problems have gotten worse. Some of you may recall my posts from the past few days regarding my recent trip to the dyno. The graph fell off around 5,000 rpm and the lines got really jagged on the graph even though it made really good peak HP and TQ numbers. You could also "feel" a slight miss of hesitation under easy acceleration at the 2000-3000 rpm range. I changed the plugs a couple of days ago, but not the wires. The wires are fairly new Taylor spiro pros and I didn't see any problems with them. After the plug change the car still ran exactly the same as it did. I then decided to check the fuel pressure. At idle it read 36lbs and at WOT 44lbs. These readings seem fine to me so that eliminated the fuel system. Today I drive the car over to the local post office and after getting my mail I return and fire up the car only to realize that it is shaking at idle and missing. I drive it up the road and it feels like its running on about 4 cylinders!!!! So, what do I do now? Go ahead on change the plug wires? Maybe the coil? I am so pissed because I know it will be the opti and this one only has around 20,000 miles on it Anyone have any great ideas or thoughts about what might be the culprit here besides the obvious stuff?

 

I would probably double, make that triple, check the wires and make sure none of them are burned or damaged. Good possibility that it is the opti though. I just did mine and your symptoms sound similar.

 

sounds like bad opti to me.

 

Yep..I plan to check the wires good again tomorrow, but I just know that it will be the opti. Oh well, it looks like I will be pimping the Ford Taurus for a while since I am just going to go ahead and do the Jet Hot LT's and install a nice cam if I have to do the opti. I am thinking that the 227/233 kit from combo would be nice