electrical issues, round 2
Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=2056
Printed Date: 24 April 2025 at 4:08pm
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Topic: electrical issues, round 2
Posted By: mxracer208
Subject: electrical issues, round 2
Date Posted: 01 September 2010 at 3:49pm
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So, my tachometer is off by quite a bit, idle is apparently
1500 and it goes all the past the redline pegs and the engine still keeps revving higher. I put a new tach filter and it changed nothing. My left side turn signals suddenly stopped working, front and back but the ticking noise is still there. And my instrumentation and radio lights are all gone too. Any help would be great. |
Replies:
Posted By: Patrick
Date Posted: 01 September 2010 at 3:58pm
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I dunno, maybe a grounding issue or an electrical short? Check obvious things like bulbs and fuses and ground straps. I've had it happen where a short within a rear light bulb messed up the electrical system. These type of problems are never easy to diagnose, especially over the internet.
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Posted By: Capt Fiero
Date Posted: 01 September 2010 at 10:20pm
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Remove, clean and replace the main lighting harness
connector by the battery. Also go over all your bulbs and check for any signs of issue. As to the tach, its time to replace it or get a calibration kit. Same type of kit I use when I need to calibrate a tach for use on a V8 you can put together a similar thing for the V6. I'd say 50% of the OEM tachs are either failing as we speak or will fail in the next few years. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: mxracer208
Date Posted: 02 September 2010 at 1:07pm
| okay, and i got my signals fixed. thanks for the help |
Posted By: Patrick
Date Posted: 02 September 2010 at 1:19pm
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So what was the problem?
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mxracer208 wrote:Posted By: mxracer208
Date Posted: 02 September 2010 at 2:18pm
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pinched wire under the dash, now im trying to solve the
instrumentation lights |
Posted By: Patrick
Date Posted: 02 September 2010 at 4:06pm
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Yep, I seem recall seeing some wiring "issues" when I looked at that Fiero last year.
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Posted By: mxracer208
Date Posted: 03 September 2010 at 8:05am
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Thats the main issue I've had except for the doors, and does anyone
by chance have a functioning and fairly new headlight switch they are selling? |
Posted By: Dr.Fiero
Date Posted: 03 September 2010 at 9:10am
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If you can't find one, remember that a 1st gen S10 uses the same switch (different bezel, but it all just unscrews/clips). |
Posted By: mxracer208
Date Posted: 03 September 2010 at 10:46am
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Alright, if I can't find a fiero one then I'll try that. And would 1st hen be
like mid 80's then? |
Posted By: Dr.Fiero
Date Posted: 03 September 2010 at 12:09pm
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Up to 93
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Posted By: mxracer208
Date Posted: 03 September 2010 at 12:35pm
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okay, and another problem, my brake lights and hazard
lights fuse keeps blowing, and i dont really know where to start. |
Posted By: Dr.Fiero
Date Posted: 03 September 2010 at 6:53pm
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Pull ALL your exterior bulbs. Turn whatever on. See if it blows. If not, put them back in one at a time (leave the whatever on). If it does still blow, let me know, and I'll show you what to pull off next. |
Posted By: mxracer208
Date Posted: 04 September 2010 at 4:58pm
| all problems solved :) |