Question about 1999 Mercury Cougar

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Check engine light came on

Just bought this car a week ago had bad gas leak when you filled it. would wake up in the morning to a gas puddle. this morning check engine light came on husband took it to the shop to have gas leak fixed and they tested the car and came up with these codes p0453 p1519 b1318 b1342 b1201 b1756 car runs fine ???

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Generally this happens because these codes were reset at a dealership etc. These problems should have been corrected before the codes were reset (reputable dealer). A common reason that these codes come on is because of excess hydrocarbon emmissions with a misfire. If this was a temporary event, the light would reset. Since it continues, another likely reason is the oxygen sensor in the exhaust system has failed.

Posted on Nov 19, 2013

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Posted on Jan 02, 2017

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SOURCE: 2001 Mercury Sable Check Engine (EGR)

In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.

  • Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
  • Clean out the EGR valve and/or tubing to remove deposits
  • Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
  • Replace the DPFE sensor (with a good quality / OEM one)
  • Replace the EGR valve
Hope that helps..........

Posted on Jun 27, 2008

  • 740 Answers

SOURCE: Car won't idle without revving when cold and dies when in drive

This Vehicle needs an Idle air control/Idle speed motor. Good Luck

Posted on Dec 28, 2008

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Generally this happens because these codes were reset at a dealership etc. These problems should have been corrected before the codes were reset (reputable dealer). A common reason that these codes come on is because of excess hydrocarbon emmissions with a misfire. If this was a temporary event, the light would reset. Since it continues, another likely reason is the oxygen sensor in the exhaust system has failed.

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