My car won't go past 42 mile anyone knows why? Is not the catalistic converter.

Asked by Sep 08, 2015 at 08:59 AM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

5 Answers

101,565

Are you sure your car is not in limp mode?

1,235

Plug in a scanner, or have an auto store do it. With the codes, it's a lot easier to track down the problem, maybe it is limp mode because something is bad.

46,415

1999 Gran Marquis has no limp mode. Problem likely is plugged catalytic converter. Just make sure the transmission is shifting through all the gears.

46,415

If it is not the catalytic converter the transmission may not be shifting into the higher gear and overdrive. Is the overdrive light flashing?

i have a 98 and its doing that also, but trac cntrl light keeps coming on???? i did have a tire replaced and the trac cntrl button in the glove box isnt working

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