siteunseen Posted April 26, 2016 Author Share #361 Posted April 26, 2016 1 minute ago, Redwing said: Deanna just sits there waiting for me to come back! I knew you had a female. 8^( All dogs are boys to me. "Here boy!" Can't help it. Cats are kittens too, no matter how old. " come here kitty kitty" 1 Link to comment Share on other sites More sharing options...
Zed Head Posted April 27, 2016 Share #362 Posted April 27, 2016 4 hours ago, siteunseen said: Well fooey! Everything worked and it cranked right up. Went to set fast idle at 2,000 rpm by my timing light. got in to watch the temp gauge. Nothing. None of my gauges worked. Pulled the fuse box cover and the IGN 20 amp as smoked. Shut it down. I put a new alternator on and that's all I changed electrically. I will get some new glass fuses and unhook the new alternator to see if my gauges come to life, tomorrow. I'm beat! Carbs got super warm too. I will close off that coolant circuit too and see what happens. I've got something wrong somewhere in the coolant routing. Sounded great for about five minutes! I was wondering if you were going to crank it up. I would test for shorts with a meter or test probe first. Check from the power supply side to ground of things that only get power when the key is On. Something will show continuity to ground that shouldn't. The charge wire, white-red, from the alternator is hot as soon as you connect the battery, so not IGN controlled. 1 Link to comment Share on other sites More sharing options...
siteunseen Posted April 27, 2016 Author Share #363 Posted April 27, 2016 Maybe I'll find something associated with you he a/c. I pulled out all of that too. Thank you Zed Head, I'll find it sooner or later. Most likely later. 8^) Link to comment Share on other sites More sharing options...
Zed Head Posted April 27, 2016 Share #364 Posted April 27, 2016 That's a possibility. Check out the "Help Identify this part..." thread. Horn buttons, early and late. You have all of them. I suggested you as a source of knowledge. 1 Link to comment Share on other sites More sharing options...
siteunseen Posted April 27, 2016 Author Share #365 Posted April 27, 2016 I got a call today about a lime yellow 240 a guy needs to get rid of. Hopefully I can see it soon. I love that color and its original, no paint job. Needs struts and brakes. Perfect to me! I'll let you know with pictures. Thanks again. 1 Link to comment Share on other sites More sharing options...
siteunseen Posted April 30, 2016 Author Share #366 Posted April 30, 2016 On 4/26/2016 at 4:21 PM, siteunseen said: Well fooey! Everything worked and it cranked right up. Went to set fast idle at 2,000 rpm by my timing light. got in to watch the temp gauge. Nothing. None of my gauges worked. Pulled the fuse box cover and the IGN 20 amp as smoked. Shut it down. I put a new alternator on and that's all I changed electrically. I will get some new glass fuses and unhook the new alternator to see if my gauges come to life, tomorrow. I'm beat! Carbs got super warm too. I will close off that coolant circuit too and see what happens. I've got something wrong somewhere in the coolant routing. Sounded great for about five minutes! Well I got lucky for a change! After reading about Dave Irwin's plug for the ZX alternator upgrade I found what I'd done. Dipstick of the day award for me. I put an alternator for my '77 280 on my 240, as Steve J said "that's bad mojo". 240s have external regulators, 280s have internal. DON'T DO THIS Ignition feedback burnt the fuse and killed my gauges. " The ZXP does all the required connecting in a clean, simple plug. The ZXP introduces a Jumper and a Diode that must be installed to prevent ignition feedback, which will power the ignition with the key in the off position." I unhooked the new alternator and replaced the IGN fuse and my gauges twitched when I turned the key, fuel gauge came up and the voltage gauge moved. Now I'm plugging all the coolant lines that go to the carbs. Fingers crossed and salt thrown over my back, looking for a rabbit too_ I'm gonna put him in a wheelchair. I may start it again in the morning and try to get through the 20 minute run in. So far I've only gotten to 5. 1 Link to comment Share on other sites More sharing options...
Zed Head Posted April 30, 2016 Share #367 Posted April 30, 2016 Aack. The 77 used external. I think that you mean that you should have used a ZX alternator with Dave's ZXP plug. The 77 alt is essentially the same as a 240Z alt. 78 and up is what you want with the plug. Link to comment Share on other sites More sharing options...
siteunseen Posted April 30, 2016 Author Share #368 Posted April 30, 2016 Here's the new one I took off and the old one I'm putting back on for now. Then I'm buying all Dave's stuff to modernize this old car. Link to comment Share on other sites More sharing options...
Zed Head Posted April 30, 2016 Share #369 Posted April 30, 2016 Those are both external. The F and the N of the "T" plug tell the story. Internal uses S and L. I'm using an ancient 1981 280ZX wrecking yard alternator on my converted system. My parts sore alt crapped out and never had much juice at low RPM. Link to comment Share on other sites More sharing options...
siteunseen Posted April 30, 2016 Author Share #370 Posted April 30, 2016 So if put the old one it's gonna blow the ignition fuse again? Link to comment Share on other sites More sharing options...
Zed Head Posted April 30, 2016 Share #371 Posted April 30, 2016 Actually, it doesn't seem like that would be the cause of your problem, but I don't know for sure. The L wire would be running to F or N which might be a short and pull enough through the Lamp to blow the fuse. The S wire might be doing the same but that should happen as soon as it's plugged in. CO, SteveJ, or Dave might know the circuit well enough to say. 240Z circuits are bit odd. Either way, you'll need a ZX alternator to use with Dave's ZXP plug. You could just get the right one and try it. Worst case you waste another fuse. Link to comment Share on other sites More sharing options...
S30Driver Posted April 30, 2016 Share #372 Posted April 30, 2016 Possibly the newer one has a serious problem. Is it a rebuilt from a parts store? Link to comment Share on other sites More sharing options...
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