Does it restart again and continue running? Any fault codes in the Powertrain computers memory?
You will need to have the systems computer control module scanned to obtain the fault codes, this is key to finding out what the problem may be that is causing the stall. The fault code test can be done free of charge by any Autozone auto parts store, Aamco transmission or Kragen/Oriley auto parts store. Ask for a "OBD2" (on board diagnostics generation 2) fault code test.
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SOURCE: 92 cadillac deville 4.9L starting problems
There should be a wire that runs from the ignition to the solenoid, check that the wire has power when you turn the ignition key, if it has power the solenoid may need replacing.
Check to see if you have power getting to the distributor and the spark plugs, if you have spark it is possibly in the fuel system
SOURCE: how to replace the thermostat on 2001cadillac deville
4.6 Northstar V8. It is located on the rear of engine (driver side) in front. It is 1n the the waterpump housing cover. Remove airbox and intake tube and bottom radiator hose. 2 bolts(believe 10mm) on thermo housing. These systems are a lil finiky about air pockets....so fill slowly and let run at idle until operating temp and let cool and chk level.....fill as needed and repeat if needed.
SOURCE: 2001 Cadillac Deville TCC PWM Solenoid Circuit (p1860)
it should take approximately 4 - 5 hours plus the cost of sensor
SOURCE: 2001 cadillac deville, overheats without loss of coolant
First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out
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after it tuens off it stays off
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