what is the year ,make and model?
explain you problem
1994 Buick Regal 38oo engine. Car starts,drives short distance,shuts off but will start up again and maybe run a short distance and shuts off again. Runs longer when car is cold but still has problem after warming up. I have worked as a mechanic for 28 years,this has me stumped.
from the way you explain
it sounds as if you have a bad crank sensor
these will do this when they go bad,,,and most times,not give a code
REMOVE OR DISCONNECT 1. Serpentine belt from the crankshaft pulley. 2. Raise the vehicle on a hoist. 3. Right front tire and wheel assembly. 4. Right inner fender access cover. 5. Using a 28 mm socket, remove the crankshaft harmonic balancer retaining bolt. 6. Crankshaft harmonic balancer using tool J 38192 or equivalent. 7. Sensor electrical connector. 8. Foreign object deflector. 9. Sensor and pedestal from block face. 10. Sensor from pedestal.INSTALL OR CONNECT: 1. Loosely install the crankshaft sensor on the pedestal. 2. Position the sensor with pedestal attached on special Tool J 37089. 3. Position the special tool on the crankshaft. 4. Bolts to hold the pedestal to the block face, torque to 20-40 Nm (14-28 lb ft). 5. Torque the pedestal pinch bolt to 3-4 Nm (38-40 lb in). 6. Remove special tool J 37089. 7. Place the special tool 37089 on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly. 8. Balancer on the crankshaft. ^ Apply thread sealer (GM(NNN) NNN-NNNN or equivalent to the threads of the balancer bolt. 9. Torque the crankshaft bolt to 140 Nm + 56° (104 lb ft + 56°). 10. Foreign object deflector. 11. Electrical connector. 12. Inner fender shield. 13. Tire and wheel assembly, torque to 140 Nm (104 lb ft). 14. Lower the vehicle. 15. Serpentine belt.
Ok. I will try that. They are a problem to fix but sounds like it may help. can I get back to you and let you know if it works?
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i have seen this many times
the car will run great until it gets hot
then,,just die as if the key was turned off
can I print your answer and info?
then,,after it cools a little
it will restart as if nothing is wrong
Thanks, XXXXX XXXXX in touch.