NHTSA Complaint #10086643 — 2004 FORD F-150

2004 /F-150/SC LARIOT/5.4. A/C ( EATC ) NOT OPERATING CORRECTLY. THIS VEHICLE HAS BEEN TO THE FORD DEALER 5 TIMES AND STILL NO RESOLVE. A/C WILL NOT COOL PROPERLY SHORT CYCLES 6/7 TIME PER MINUTE. THE EATC (ELECTRONIC AIR TEMPRATURE CONTROL) FOR THE A/C DOES NOT OPERATE IN FORD SPECS. AS PER FORD F-150 WS MANUEL, PAGE 412-00-4 AND STATES" IT IS KNOWN THAT A REFRIGERANT PRESSURE OF APPROXIMATELY 210 KPA ( 30 PSI) WILL YIELD A OPERATING TEMPERATURE OF 0*C (32*F). THE A/C CYCLING SWITCH CONTROLS SYSTEM OPERATION IN AN EFFORT TO MAINTAIN THIS TEMPERATURE." TEST RESULTS ( IN F* ) AT 58 / 64 % HUMIDITY MAX COOL.( ADD 8/10* FOR REG A/C) #1. AMB.70*=A/C @44* STABLE #2. AMB.80*=A/C @51* STABLE #3. AMB.90*=A/C @56* AND UNSTABLE #4. AMB.100*=A/C@62* AND UNSTABLE #5. AMB. 110*=A/C @70* AND UNSTABLE THESE RESULTS WERE VERIFIED AND REPRODUCEABLE ON 7 NEW UNITS FOR COMPARISON. FORD "HOTLINE " SAYS THAT AS LONG AS THE PRESSURES ARE NORMAL THE SYSTEM IS NORMAL AND THERE ARE NO REPAIRS OR CHANGES AUTHORIZED. IF THIS SYSTEM WAS WORKING AS ENGINEERED BY FORD SPECS. THESE READINGS WOULD BE 8/10* LOWER AND OPERATING CORRECTLY WITH NO COMPLAINTS. FORD HAS STATED " DO NOT RETURN THIS VEHICLE UNLESS THERE IS A REAL PROBLEM. *JB