Runs rough but idles perfect. i put new in take . i left the stove top and flap. how to reset ecm?? it is motor Z TBI
SOURCE: no spark 350 chevy tbi
You need power on both sides of the coil with key on engine off. With test light on neg side of coil you should get flashing light with engine cranking. No flashing indicates no trigger from ign module. No flashing can also mean the pick-up is faulty. To check pick-up dissconnect from module and use analoge meter set on ohms.Check meter movement during crank. If o/k check rotor for burn through.and change module.
SOURCE: 1987 chevy s10 2.5l tbi will not start. changed
That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
SOURCE: my 1994 chevy s10 blazer is running rough and on
make sure you have good fuel preasure, start with that first.
SOURCE: 1989 Chevy S10 Blazer, 4.3L V6. 4wd not working.
under the battery is where you need to check first,then follow it down around the right front wheel well,
This is all I've got.Hope this helps?
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