Truck died going down the road replaced crank sensor coil pack and timing chain spark is red not a blue color could it be the ecm truck cranks but wont start

Your spark plug wires go to coils, coils sit on top of ignition module.You have two crank sensors, if crank sensor issue, check the 7x crank sensor, on back side of engine block, down low, two wire connector, wire colors, yellow and purple.

If the crank sensor is open, it will not allow signal for coil pack.

Its a 98 and all the sensors should be changed by now.

TIMING BELT BROKEN!!

if if the crank sensor has been replaced and still reads bad it could be a timing issue,maybe timing has slipped or maybe timing chain has broke.. remove oil cap and look down into valve pan while someone tries to start it. if rocker arms do not move then this would indicate timing chain or gears are broke.... hope this helps and good luck....please rate this post

Was the timing chain damaged ?
Did you have spark from the coil before you replaced the other parts ?
Do you have battery voltage on the positive side of the coil with the key on and in crank mode ?
Is the coil wire not sparking, or are you not getting spark at the plugs ?
Is the distributor rotor turning when you crank the engine ?

Trouble Code 42 indicates that there may be a malfunction in the Electronic Spark Timing (EST) system. During cranking, the timing is controlled by the ignition module and the ECM grounds the EST line. It expects to see no activity on this line at this time. When the ECM enters EST mode, it applies +5 volts to the BYPASS line and expects to see voltage variations on the EST line.
Reasons for the ECM to set Code 42:
1. System in BYPASS mode (i.e. EST line supposedly grounded) but activity sensed on EST line
2. System in EST mode (i.e. BYPASS line driven with +5 volts) but no activity seen on the EST line

Possible causes include:
1. BYPASS line is open or grounded
2. EST line is open or grounded
3. Poor connections between ignition module and ECM
4. Poor routing of EST harness and/or poor quality ignition wires (EMI induced electrical noise
5. Faulty or incorrect ignition module
6. Faulty ECM
7. Faulty Pick Up Coil
8. Faulty Ignition Control Module
9. Faulty Crank Sensor or the Crank Sensor magnet probe could be cracked

ECM is probably going bad... Try heating it with a heat gun... Sometimes that will trigger a shut-down and let you know if that is it.

get a new car

i believe this line is fused from the E.C.M.,go to your local library and find a chilton's auto manual,this will tell you for sure

The crank sensor is causing the car to die. When it gets hot the resistance builds up and it will not read the crank signal. Then the car will die. When it cool the sensor will read again. You wont get spark if the crank sensor is not reading the ecm doesnt see the signal and will not allow the coil to fire.