Celunoid ?? SOLENOID !
Could be starter , test ! VOLTAGE DROP TESTING .
Starter Voltage Drop
What size engine ???
Starter Motor, 4.6L
C1020
Lower right side of engine
Starter Motor, 5.4L
C1020
Lower right side of engine
Starter Motor Relay, 4.6L
C166
Right rear of engine compartment
C167
Right rear of engine compartment
Starter Motor Relay, 5.4L
C166
Right rear of engine compartment
C167
Right rear of engine compartment
SOURCE: Loud buzzing noise
From the sounds of it, it's simply your air ride's compressor. If you're not aware that your vehicle has air ride suspension, read up on the user's manual or look on the web. When you start your vehicle and shift into drive or reverse, your compressor should start (assuming no doors are ajar). The compressor than fills all four airbags in your vehicle to a factory-set height. These airbags provide a softer ride than the conventional shock/strut system seen in less expensive SUV's and trucks but are also more prone to problems and damage down the line. You can isolate the compressor as the sound by going to your truck, removing the left hand side panel and switching your air ride off. Your car's compressor then should not kick in at all. However, you should not operate your vehicle with this switch turned off. You should only use it as a diagnostic reference or anytime your car is towed, hoisted, or jacked up. Hope this helps.
SOURCE: 1999 Continental will not start
Does anti-theft light come on for a sec then turn off when you turn on the key or does it flash with key on?
You said that CEL turns off while cranking,does it come back on if you continue to crank after about 8-10 seconds of cranking?
If it does not then your PCM is not seeing a signal from the crankshaft postion sensor.You can try wiggling the harness at the crankshaft postion sensor and see if it will start.
SOURCE: engine shutdown while driving, check engine light
Try turning the advance-trac off. If you have a systems menu (Should be right side of Speedo) you have options for Park assist, bells ,chimes and so on. One selection is the Traction. The traction assist works by throttling down the engine when it detects a difference in rotation from 1 wheel to the next.
You need a scan for the codes but your hunk of metal is not able to go to Autozone or Oreillys until you start it.
You may also want to try to enter the keyless entry code in the door keypad in case the antitheft is upset. Your alarm may block the ignition.
Defeating the traction control and alarm system may get you going.
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