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Q: have a 02 mountaineer was in wreck recently on 1990 Mercury Cougar

was hit right rear near gas tank has now little to no power cant get above 15 mph what could have caused this have a 4.6 engine
most damage in that area (this lagging started today

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I would recommend start with checking the fuel pressure. It is possible your wreck did some damage to the fuel pump harness. You may want to also make sure your inertia switch has not been tripped, check your owners manual to see if you do indeed have an inertia switch. Make sure that you don't have any pinched fuel lines also.
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