Less power 2002 than 1993
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Asked by Trippmeister May 03, 2015 at 07:15 PM about the 2002 Mercury Grand Marquis GS

Question type: Maintenance & Repair

Hi, my 2002 runs great and passes smog, but it has less power on the freeway than my
old '93 did. I cleaned the MAF, new air filter and fuel filter. Car only has 30K. Is this
normal, or is there something I should check?

3 Answers

FordNut answered 9 years ago

According to Edmunds the '93 with 4.6L came stock 190HP. The '02 4.6 220HP. So yeah, somethings not right.

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MichaelTK answered 9 years ago

I take it that you already had a tune up so you have fresh spark plugs. So the next thing I would do is replace the spark plug wires and coil. This did the trick for me in the past.

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Trippmeister answered 9 years ago

The plugs have 30K on them, so I'll replace, like you said. It has an individual igniter coil on each plug, no wires. Does not miss. Thanks.

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