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View Full Version : Alternator Causing Misfire?


tylerinc
09-15-2011, 01:43 AM
92 240sx.
Car under any load has a stalling/hard misfire. Fuel pump, plugs, wires, cap/rotor, fuel filter, air filter, maf, coil and knock sensor all replaced.... With the engine running the battery light is dim. When i use accessories the light gets brighter. When i disconnect the negative from the battery light goes out. I will be hooking up a volt meter when i get a fuse for mine but for now i wanted to see if my theory is correct that the alternator is putting out just enough power for the engine to stay running. Any other ideas greatly appreciated.

XxIriponzeesxX
09-16-2011, 08:25 PM
If the battery light comes on 9/10 its the alternator. I would replace the alternator.

tylerinc
09-19-2011, 02:12 PM
ok thanks man. we check the voltage its getting 14 when on but i still dont trust it