Problems with 2002 Infiniti Q45 ENGINE AND ENGINE COOLING

In march 2008 my 2002 infiniti q45 would not start, had it towed from fayetteville, nc to infiniti dealer in raleigh, nc. they r/r starter assy to resolve issue at no charge, old part not available. on 5/15/08 my car would not start, had it towed from fayetteville to infiniti dealer in raleigh. they r/r starter assy to resolve issue at no charge, old part not available. on 7/26/08 car would not start again. had it towed from fayetteville to infiniti dealer in raleigh. they said motor burned out due to ignition switch malfunction & r/r starter assy & ignition switch to resolve & charged $1,205.54. i asked about recall i found on nhtsa website regarding engine & engine cooling because it stated this could cause a no start condition. they did not acknowledge this recall and that's why they charged me. i would like some assistance in determining if this recall is causing my car to periodically not start. this seems to occur every 2 months. *tr

Consumer and the dealership noticed that engine was consuming 2 and a half quarts of oil every 4400 miles. also, vehicle had brake rotors problems. *ak when the second oil consumption test was done for 33000 miles the vehicle used one and a half quarts of oil. heavy blue smoke emits from the exhaust pipe during initial start up. *nm

The consumer was informed by the infinity csr that based on their records, the crank position sensor weld recall 03v455000 wasn't performed. prior to contacting the manufacturer, the consumer had taken the vehicle to the dealership to have the recall brepairsperformed and was told when they picked the vehicle that the recall was done.*ak

1 - there is up to a two second delay when quick acceleration is required. at times it feels as if the engine completely stalled. 2 - the vehicle often will not downshift to slow the vehicle on a hill. i could be in 5th gear at around only 1800 rpm, and when i downshift twice, it will not go to 3rd. i often have to downshift up to 6 times for it to respond and switch to third. i need to take my eyes off the road to constantly check if i'm in the gear i select. 3 - the parking/emergency break will not hold the fully loaded vehicle on a hill. if the transmission in park fails, the vehicle will roll. all issues are considered to be normal by the manufacturer. they corrected the problem on their new 2005 version and refuse to do so on my vehicle.