95 LeSabre Hesitates During Heavy Acceleration

[CarDude225]

95 LeSabre Hesitates During Heavy Acceleration (3.8L)

59,000miles. Noticed today during heavy acceleration it feels and sounds like 1 or 2 or 3 cylinders seem to drop out and acceleration stops. Release the pedal a bit and power kicks back in, and acceleration resumes.

Wife says it did this since the beginning (January 2007 - 57,000mi).

I'm going to change plugs and wires because of this and hope that will solve the problem.

I welcome any comments regarding this. Thanks! I'll post again once I change the plugs and wires.

[HotZ28]

Plugs & wires are a good start. If the problem persist, you need to change the fuel filter and check the coil resistance. Coils should read on the primary side near 0.5-0.9 (ohms) & secondary side (k-ohm) 5.0-8.0.

I usually use an old spark plug gapped to .250 connected to the spark plug end of the ignition wire & grounded. While cranking the engine, observe the plug for spark. If you see a crisp blue spark, the ignition coil is working properly. If you only see a pale yellow spark, more than likely, you have a weak coil. I have seen quite a few coils that would pass the resistance test, however, not produce max voltage output.

[CarDude225]

Changed the plugs to Autolite Platinum (old plugs looked original-AC Delco), changed the wires to Autozone's cheapest (Xact-spelling?) which also looked original. Test drove: Wow, car really performs. Thought it was doing well cause it was cold so let it warm up and test drove it again: Nice! No hesitation.

Then I changed the fuel filter.

All is well. I love that car! ( I drive a 96 Olds Ciera Wagon - 3.1 6 cylinder ).