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P1408 Diagnostic Trouble Code Discussion for October 2009

Manifold Absolute Pressure Sensor Signal Performance

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Trouble Ticket Help Requests for DTC P1408
Help Request Posted
1995 Lincoln Town Car Executive 4.6L Poor Idle Quality, Misfire VIN: 1LNLM82W05
P1408: egr flow out of range. when car is started cold, car runs fine. after running for around 5 minutes it begins to misfire. traced to cylinders #1 and #6. when you remove the spark plug wires from those 2 spark plugs no difference is made. we have good spark at the plugs. we installed ...
October 23, 2009