2002 Mercury Marquis fuel problem

Tiny
FUQUA51
  • MEMBER
  • 2002 MERCURY MARQUIS
  • 112,000 MILES
I have a 2002 mercury grand marquis and it runs good except when I am up to around 50 mph at a steady speed it goes to jerking like I am running out of gas and I let up off the gas a little it stops and when I hold that speed again it repeats its self
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Sunday, August 18th, 2013 AT 3:35 PM

3 Replies

Tiny
SATURNTECH9
  • EXPERT
Have you tried unhooking the egr valve to see if the problem goes away?
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Sunday, August 18th, 2013 AT 3:41 PM
Tiny
FUQUA51
  • MEMBER
I have not just unhook it, but I replace it with a new one and the same results occurred. I replace fuel filter it stop for a couple days and started back
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Monday, August 19th, 2013 AT 4:48 AM
Tiny
SATURNTECH9
  • EXPERT
Try just hooking the egr valve leaving it in place and see how it runs?Also is it worse with the ac on?Any codes in the computer?
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Monday, August 19th, 2013 AT 10:14 AM

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