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Mazda MX-5 Miata Electrical Problems

35 messages,  Last post on Oct 27, 2009 at 11:44 AM

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What is this discussion about? Mazda MX-5 Miata, Lights, Electrical, Convertible

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#26 of 35 Re: 92 Mazda Miata with electrical issues [shebalynnx] by avid1 Dec 04, 2008 (11:45 am)
Replying to: shebalynnx (Feb 21, 2008 8:21 pm) My 1992 has the exact same issue. Did you fix yours? How? fyi: regulator is integrated into the alternator   I replaced both the batt & alt. also the cooling fan relay   have had both the new batt & alt bench tested twice. both good
#27 of 35 Re: 92 Mazda Miata with electrical issues [shebalynnx] by hirdan Dec 17, 2008 (7:38 pm)
Replying to: shebalynnx (Feb 21, 2008 8:21 pm) Were you able to solve this problem? I don't have the exact problem but similar. Mine will be dead after a week or two of not using. Even keeping an trickle charger on it. Had it looked at by a Mazda dealer and twice by a Japanese auto specialist. I'm ready to give up since they can't find the problem.
#28 of 35 1992 Miata hummin from engine killing battery by jflorio Mar 16, 2009 (11:05 am)
I wanted to know what the rectangular box is on the passagers side, engine compartment, that is located closest to the firewall rather than the very front of the car. I looks like there are some brake lines running to it, but its not the master cylinder (opposite side), the humming is electrica because it ran my battery dead, I can't imagine what it could be.
#29 of 35 Re: interior lights not working [cpico] by fire_man2340 Mar 23, 2009 (6:06 pm)
Replying to: cpico (Aug 08, 2008 9:02 am) Hey you need to look at the RECALLS on the 1990 Miata's that in one of the recalls, call you closes MAZDA SALE'S and if it hasnt been fixed yet they HAVE TOO do it for FREE
#30 of 35 Re: Undiagnosed electrical problem [boerne] by firejoy May 15, 2009 (7:12 am)
Replying to: boerne (Jun 23, 2008 2:41 pm) I recently had the exact same problem. The battery indicator light went on. I stopped at a garage and had the battery and alternator checked, they were both okay. I've checked all the fuses and they are also fine. The battery indicator light went out at lower rpms, but would come back on at higher rpms. The car shuddered, with a loss of power to the cruise control/stereo/cigar lighter. The air bag indicator light flashed briefly, but has not flashed since. The car continues to start and run properly. Any answers to what should be checked next? Thanks
#31 of 35 Heating problem by lordelpuz Jun 30, 2009 (10:59 am)
I have a V Spec Eunos Roadster, 1990,I live in the uk, the last weeks weather has been boiling hot, till now things have been fine, but a couple of days back as i was stuck in traffic the temp dial went up to almost boiling, i pulled over and switched off, the Eunos has two twin fans, one is the aircon or so i have read, but the other wasnt working, and i noticed the previous owner had disconnected the fan under the hood, via the two snap together joints, so i put em back together, everythngs fine, till i get home an find the fan wont go off unless i pull the connections apart again, Ive odered a new tempreture sender from the front section, the one that controls the fan thinking it could be the sender thats packed up, as the fan works when the engines hot or cold once i put the two halves together again, Ive not recieved the new sender yet but just in case thats not the reason i'd be gratefull for any help or ideas..please.
#32 of 35 Engine cycling without computer error by greg109 Jul 12, 2009 (4:40 pm)
Yesterday I was driving and my beloved 01' miata started accelerating on its own. I pushed in the clutch and slowly eased on the brakes and the rpm's stayed at a constant 4000. I pulled over thinking that my throttle cable had gotten stuck some how, but to my surprise it wasn't. The 'check engine' light didn't come on, so I didn't know what it could be. I disconnected the battery cable to reset the computer and started it back up and the engine starting cycling like someone was constantly revving up the engine. I drove it back home all the while it would rev when the clutch was disengaged. I replaced the throttle positioning sensor...$157.00 and it's still cycling. Does anyone know what could be the problem. I'm a great garage mechanic, but this has got me stumped.
#33 of 35 2001 Instrument/Gauge Failure by chris1969 Oct 08, 2009 (5:37 pm)
I have experienced an outage on my gauges. I have changed the fuse repeatedly. Once replaced, the gauges will work for a minute, then blow the fuse. All other electrical seems to be okay. I have resorted to purchasing a bunch of fuses so I can check the fuel level periodically. Help, please! Replies to this message: ateixeira (Oct 09, 2009 7:16 am)
#34 of 35 Re: 2001 Instrument/Gauge Failure [chris1969] by ateixeira Oct 09, 2009 (7:16 am)
Replying to: chris1969 (Oct 08, 2009 5:37 pm) Must be a bad ground. I've never done much electrical work, only installed a couple of stereos, but I bet that's what is causing it.
#35 of 35 Headlight control by xyla Oct 27, 2009 (11:44 am)
2007 Miata GT - is there a louder alarm to keep from leaving headlights on? Is there a add on control unit to turn headlights off when ignition switch is turned off? Thanks for any help

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