1998 Mercury Marquis engine stalls

1998 MERCURY MARQUIS
185,200 MILES • V8 • 2WD • AUTOMATIC
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RODOLFO ROMAN
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  • 1 POST
car starts up ok but when you accellerate it idling it stalls. starts right up, when shift to drive it also stalls. does not seem to be missing , have to take off in neutral. air filter and gas filter have been changed.toke it to autozone and they told me it might be the agr valve
Dec 24, 2007 at 5:58 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
[quote:1a38f7bb30="rodolfo roman"]Engine problem
1998 Mercury Marquis V8 Two Wheel Drive Automatic 185200 miles
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car starts up ok but when you accellerate it idling it stalls. starts right up, when shift to drive it also stalls. does not seem to be missing , have to take off in neutral. air filter and gas filter have been changed.toke it to autozone and they told me it might be the agr valve[/quote:1a38f7bb30]

check and adjust base idle
check and clean idle air valve
Dec 27, 2007 at 5:07 PM
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JDWCOBRA93
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  • 3 POSTS
Sounds like the idle air control valve. I have replaced dozens of these on Grand Marquis. Seems like a common problem on these vehicles. Also, clean throttle body and plate.
Dec 27, 2007 at 7:10 PM
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