1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

electrical gremlins

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Old 08-08-07, 12:32 PM
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electrical gremlins

So i swapped the cables on the ignitors per what i was told and it keeps blowing the meterback fuse
Old 08-08-07, 02:04 PM
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also figured out that both ignitors seem to be working well. i pulled both of them off and hooked them to o-scope and did every digital electronics check i could think of on them. The previous owner called me and told me he "forgot" to mention the carb needed rebuilding so problem solved there.. now i know why it runs like a dawg. bu i cant keep the gauge fuse from popping to save my life. suggestions?
Old 08-08-07, 02:39 PM
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What size fuse is it?
Old 08-08-07, 02:48 PM
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15 amp per spec. Also is throwing me the battery light even tough the battery is good and fully charged and the "exhaust overheat" light

Last edited by Reavantos; 08-08-07 at 02:55 PM.
Old 08-08-07, 06:43 PM
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ok so ive checked everything with a ohm and voltage meter and cant find whats causing it to blow.
Old 08-08-07, 06:48 PM
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than swap out the 15, and throw a 30 on it. That'll fix the issue!
Old 08-08-07, 07:40 PM
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Originally Posted by '84-12A-GSL
than swap out the 15, and throw a 30 on it. That'll fix the issue!
umm how about no. i am a former dsm owner so i am use to car fires but that DOES NOT mean i like them
Old 08-08-07, 07:46 PM
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Ohh...a DSM guy. let me guess.. you took the crank for a walk! bah.

No worries about that with a rotary hehe.

Yeah don't put a 30 in it, that was a joke.

Why did you swap the wires?
Old 08-08-07, 08:03 PM
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Originally Posted by '84-12A-GSL
Ohh...a DSM guy. let me guess.. you took the crank for a walk! bah.

No worries about that with a rotary hehe.

Yeah don't put a 30 in it, that was a joke.

Why did you swap the wires?
the rx7doc told me to swap them on the ignitors to see if it was a bad ignitor.. so any ideas?




and no i never delt with crank walk But enough fuel and turbo issues for running 18 psi >.>
Old 08-08-07, 08:05 PM
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Have you checked the voltage output of the alternator?
Old 08-08-07, 08:05 PM
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What was the issue in the first place?
Old 08-08-07, 08:13 PM
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Originally Posted by '84-12A-GSL
What was the issue in the first place?
was driving down road. lost power. died wouldnt restart


no i did think of that one doctor. thanks ill do that right now!
Old 08-08-07, 08:19 PM
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readings are normal from the alternator
Old 08-09-07, 01:08 PM
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yeah i cant figure it out at this point and would appreciazte anything you folks could do to help diagnose this
Old 08-09-07, 06:24 PM
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heres the pic
Attached Thumbnails electrical gremlins-pic-0009.jpg  
Old 08-09-07, 08:59 PM
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Ok, need to know what if anything you have done or replaced since you bought the car?
Old 08-10-07, 10:43 AM
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Originally Posted by rx7doctor
Ok, need to know what if anything you have done or replaced since you bought the car?
spark plugs. otherwise i have not replaced anything electrical and its been doing this ever since the car stalled the first time
Old 08-10-07, 07:31 PM
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Looks like it is time for you to download a copy of the FSM if you have not done so. You will want to look at the wiring diagrams to see what other circuits are on the fuse that keeps blowing.
Old 08-10-07, 08:57 PM
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according to the diagram the only things on that circuit.. are the gauges and related sensors...... so im thinking something is grounding itself out. because that fuse pops the moment the key is turned to the on position
Old 08-12-07, 08:56 AM
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has anyone else ever had this happen?
Old 08-13-07, 03:10 PM
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ok so i have checked 100% of the wiring. no reason for it to be failing like this
Old 08-15-07, 09:06 PM
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You should check your ignition coils. Test method is in the Haynes manual, and probably the FSM.
I was driving home from work one day, and slowly lost power.
It turned out to be the coils.

There was a thread not too long ago with the car having the same symptoms,
He had the wrong plugs, I suspect it affected the coils.

Don't know if it has anything to do with your fuse blowing/short.
Old 08-20-07, 06:28 PM
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Originally Posted by Stevan
You should check your ignition coils. Test method is in the Haynes manual, and probably the FSM.
I was driving home from work one day, and slowly lost power.
It turned out to be the coils.

There was a thread not too long ago with the car having the same symptoms,
He had the wrong plugs, I suspect it affected the coils.

Don't know if it has anything to do with your fuse blowing/short.
at this point im willing to consider all options. thanks
Old 08-25-07, 02:00 PM
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still no luck
Old 10-23-07, 03:19 PM
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so now i went to start it smelled something burning. now nothing comes on with the key. thank god i have the 04 wrx as a daily driver...lol


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