I have an 87 toyota pick up, no spark. I changed the pick up coil, checked for power to coil, good power, been told that it is the ignighter,problem is they want $450 for new one.having hard time finding used one. what I want to know, is there a way to test so I don't spend a fortune and it not work? thank you. chad
To check the Coil, pull the HT lead that comes from the coil to the dissy cap out of the dissy cap and hold close to the engine and with the ignition switch turned on earth the negative side of the coil. If there is no spark then the coil is the likely problem. If there is spark then check that the ignitor is recieving the signal from the pick-up (use an LED tester at the ignitor plug) the tester should blink as you crank the engine over. If the tester doesn't blink then check the output of the pick-up at the plug on the side of the dissy, if still no blink then check the pick-up clearance. If it blinks at the dissy and not at the ignitor the check the wires/plugs for breaks. If it blinks at the ignitor and there is still no spark then the ignitor is the likely fault.
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Would need mo info.When does it stop. If it has spark when cranking but not as soon and key comes out of start position you'll need to look at it as an coil power problem. Need to see if it is getting power when Ignition switch is in run position. Since the coil ground is controlled to make spark, there should always be 12 volts to the coil when switch is in run position. Some older cars, the starter solenoid provides power to the coil when cranking and the ignition switch takes over in run position.
Sounds like a crank sensor to me. I believe this will be found just below your bottom pulley [ crank pulley] . This is responsible for getting power to the coil. These are sometimes hard to get out . I just broke it off and used a socket. I don\'t know how you can test this sensor unless you have a wire test kit. I am not positive on this, but I\'m pretty sure. It sure sounds like it. Let me know how you make out.
it is electronic
could be a faulty coil /wiring
not the chain or it would not be running at all
I would be looking at an incorrect coil or igniter in the distributor
coils come in 2 types
12 volts start and 7.5 v run or straight 12 volts
if you run a 7.5 volt coil without the resistance wire or resistance block , it will overheat the coil and it will break down , missing or hard to start or no start at all
If your engine cranks normally
but will not start and cuts off because it has no spark, or it stalls and won't restart
because it has no spark, the problem may be due to any of the following: A bad pickup inside the
distributor a stripped distributor drive gear (common problem with plastic
distributor drive gears, broken, loose
or corroded wires from the pickup to the ignition module orPCM. If there is power going from the coil to the dist, but no spark coming out of the dist. the Condenser is bad. Small round thing that has a wire that hooks to the points. If the engine has no spark, check for voltage at the coil positive terminal when the ignition key is on. If there is voltage, the problem is on the trigger side of the coil (pickup, crank sensor, ignition module or primary wiring circuit). If there is NO voltage at the coil, the problem is on the supply side (the ignition switch or ignition wiring circuit). If the coil has voltage, the problem may be a bad high voltage output wire from the coil to the distributor, hairline cracks in the coil output tower, or cracks or carbon tracks inside the distributor cap or on the rotor.You can check this with voltmeter.------------------ That's it.
Check plugs and wires for ware or loose, if they are good is it cranking fast enough, if not have your battery tested. If battery good check positive battery cable and clean up any corrosion on battery or were it attaches to the starter, also check to make sure the cable is good. Still not cranking fast enough check grounds or you may need to add one between frame and the block. If still not fast enough starter may be bad or you need a battery with more crank amps. If it is cranking fast enough, get somebody to turn the key to check the coil. Pull wire that is in the top of the distributor that goes to the coil and hold it near the valve cover and have someone turn the key, if it sparks the coil is good if not replace the coil. If coil good are you getting fuel, can you hear the fuel pump kick on when you turn the key or change the fuel filter. Sometimes the vent on the gas tank gets plugged, remove cap to vent and see if that helps get fuel. If everything checks out and you have good crank, you have spark and you have fuel, get out your pocketbook you will either need a mass airflow sensor or a computer.