That car has 4 piston fixed calipers, so there are no slides. Did the pistons slide back in easily on both sides of the caliper after the pad change? Was there more resistance on any of the pistons? The first possibility would be a sticking piston.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record