Gentlemen,
My '90 SC AOD is having a minor problem at idle only. It's not really rough, but I can feel frequent little misfires... it's more like the engine drops ignition for a split second and comes back on rather than a misfire. It happens so fast that it almost doesn't act as if there was a misfire. Fuel pressure is good at idle, and the car is running perfect otherwise. This is very hard to explain. I've got all new sensors/plugs/wires, including a new DIS module, but I did not change the crank sensor yet. i also noticed that sometimes it takes a little longer to crank up- nothing major though. Since i replaced the majority of ignition components and sensors, including the ignition switch fix, i'm thinking that i may have an intermittent crank sensor. I worked very hard on this SC and made sure all wire harnesses and connectors had continuity.
My question is given that everything else is working properly, could a crank sensor work intermittently and cause the engine to "bump" frequently like that?
I just thought that possibly my plugs (autolite 2544's non platinum) may also not be gapped correctly- they were approx .050, could this cause an issue with the waste spark distribution (if this makes any sense)?
What are some of your experiences with this?
Anyone-
thanks
My '90 SC AOD is having a minor problem at idle only. It's not really rough, but I can feel frequent little misfires... it's more like the engine drops ignition for a split second and comes back on rather than a misfire. It happens so fast that it almost doesn't act as if there was a misfire. Fuel pressure is good at idle, and the car is running perfect otherwise. This is very hard to explain. I've got all new sensors/plugs/wires, including a new DIS module, but I did not change the crank sensor yet. i also noticed that sometimes it takes a little longer to crank up- nothing major though. Since i replaced the majority of ignition components and sensors, including the ignition switch fix, i'm thinking that i may have an intermittent crank sensor. I worked very hard on this SC and made sure all wire harnesses and connectors had continuity.
My question is given that everything else is working properly, could a crank sensor work intermittently and cause the engine to "bump" frequently like that?
I just thought that possibly my plugs (autolite 2544's non platinum) may also not be gapped correctly- they were approx .050, could this cause an issue with the waste spark distribution (if this makes any sense)?
What are some of your experiences with this?
Anyone-
thanks
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