bonehead Posted December 26, 2011 Share Posted December 26, 2011 (edited) i was checking the ohms on the fuel injectors and my multimeter jus starts going crazy and not giving me a good reading. i tested everything else and it gave good readings. so i was wondering is my injectors bad and is that why my meter is not giving a good reading? or am i doing it wrong? oh and yes i followed the service manual. Edited December 26, 2011 by bonehead Link to comment Share on other sites More sharing options...
1994SEV6 Posted December 26, 2011 Share Posted December 26, 2011 i was checking the ohms on the fuel injectors and my multimeter jus starts going crazy and not giving me a good reading. i tested everything else and it gave good readings. so i was wondering is my injectors bad and is that why my meter is not giving a good reading? or am i doing it wrong? oh and yes i followed the service manual. was it steady or moving all around? Link to comment Share on other sites More sharing options...
Precise1 Posted December 26, 2011 Share Posted December 26, 2011 You either weren't getting a good consistent contact on them (possibly due to lead wires or plugs) or there is an issue with your multimeter. I had one where the selector ring cracked so it worked properly intermittently and went wild other times. I replaced it and have no issues now. I have checked the injectors also and got good readings without any real issue. I eventually did find a bad one and the multimeter read accordingly. 10-14 ohms or something like that is the proper range, I can't remember exactly. I had an intermittent failing injector, it only happened when it was hot, sat and restarted so if you may want to take both a hot and cold reading, it does make a difference... B Link to comment Share on other sites More sharing options...
bonehead Posted December 26, 2011 Author Share Posted December 26, 2011 was it steady or moving all around? it was moving all around. may be not getting good conection.idk. Link to comment Share on other sites More sharing options...
bonehead Posted December 26, 2011 Author Share Posted December 26, 2011 You either weren't getting a good consistent contact on them (possibly due to lead wires or plugs) or there is an issue with your multimeter. I had one where the selector ring cracked so it worked properly intermittently and went wild other times. I replaced it and have no issues now. I have checked the injectors also and got good readings without any real issue. I eventually did find a bad one and the multimeter read accordingly. 10-14 ohms or something like that is the proper range, I can't remember exactly. I had an intermittent failing injector, it only happened when it was hot, sat and restarted so if you may want to take both a hot and cold reading, it does make a difference... B so i should check it when engine is cold? or it doesn't matter? Link to comment Share on other sites More sharing options...
Precise1 Posted December 26, 2011 Share Posted December 26, 2011 I don't recall if the FSM specified but cold is easier and hot is the 'operating temp' although I have to assume the fuel and spraying it keeps them cooler which must be why mine only acted up after it sat hot and was restarted. In other words, I dont know. Check both ways. B Link to comment Share on other sites More sharing options...
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