Pennock's Fiero Forum
  Technical Discussion & Questions
  Right turn signal issues

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Right turn signal issues by tthrock
Started on: 04-08-2025 03:50 PM
Replies: 9 (135 views)
Last post by: tthrock on 04-11-2025 11:55 AM
tthrock
Member
Posts: 29
From: Lima, Ohio, USA
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-08-2025 03:50 PM Click Here to See the Profile for tthrockSend a Private Message to tthrockEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have a well used 1985 Fierro with a six-cylinder in it.
When I turn on the left turn signal, I hear the clicking, and the lights blink. No light comes on the dash though. When I turn on the right turn signal, I do not hear any clicking, and the lights do not blink. And of course, no light on the dash.
Ideas?

More problems to come, lol
IP: Logged
PFF
System Bot
Mike in Sydney
Member
Posts: 804
From: Meadow Flat, NSW, Australia
Registered: Sep 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-08-2025 06:37 PM Click Here to See the Profile for Mike in SydneySend a Private Message to Mike in SydneyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by tthrock:

I have a well used 1985 Fierro with a six-cylinder in it.
When I turn on the left turn signal, I hear the clicking, and the lights blink. No light comes on the dash though. When I turn on the right turn signal, I do not hear any clicking, and the lights do not blink. And of course, no light on the dash.
Ideas?

More problems to come, lol


Sounds like a faulty indicator bulb in the display ? Do you have the same issue when the hazard lights are on?

For the right side, try replacing all of your turn signal bulbs. You may have a bad bulb or corroded contacts in the socket.
IP: Logged
olejoedad
Member
Posts: 19699
From: Clarendon Twp., MI
Registered: May 2004


Feedback score: (5)
Leave feedback





Total ratings: 206
Rate this member

Report this Post04-08-2025 08:21 PM Click Here to See the Profile for olejoedadSend a Private Message to olejoedadEdit/Delete MessageReply w/QuoteDirect Link to This Post
The front turn signal sockets are a known problem for corrosion...
IP: Logged
buddycraigg
Member
Posts: 13615
From: kansas city, mo
Registered: Jul 2002


Feedback score: (5)
Leave feedback





Total ratings: 478
Rate this member

Report this Post04-09-2025 04:43 AM Click Here to See the Profile for buddycraiggSend a Private Message to buddycraiggEdit/Delete MessageReply w/QuoteDirect Link to This Post
do the outside lights come on?
IP: Logged
tthrock
Member
Posts: 29
From: Lima, Ohio, USA
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-09-2025 11:44 AM Click Here to See the Profile for tthrockSend a Private Message to tthrockEdit/Delete MessageReply w/QuoteDirect Link to This Post
Since there is no ticking sound inside the car when using the right blinker , would there be a relay that could be causing the issue? The left blinker makes the tick sound as it should and it works. Would bad bulbs or sockets cause the sound to stop?
IP: Logged
tthrock
Member
Posts: 29
From: Lima, Ohio, USA
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-09-2025 12:25 PM Click Here to See the Profile for tthrockSend a Private Message to tthrockEdit/Delete MessageReply w/QuoteDirect Link to This Post

tthrock

29 posts
Member since Mar 2011
 
quote
Originally posted by tthrock:

Since there is no ticking sound inside the car when using the right blinker and no lights,would there be a relay that could be causing the issue? The left blinker makes the tick sound as it should and it works. Would bad bulbs or sockets cause the sound to stop?

The left side blinkers work properly inside and out. The right side doesn’t make a sound inside the car (tick, tick, tick, etc) and doesn’t turn on the lights on the outside.
When I turn on the hazard lights they work.


IP: Logged
1985 Fiero GT
Member
Posts: 941
From: New Brunswick, Canada
Registered: May 2023


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-09-2025 01:01 PM Click Here to See the Profile for 1985 Fiero GTSend a Private Message to 1985 Fiero GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by tthrock:

Since there is no ticking sound inside the car when using the right blinker , would there be a relay that could be causing the issue? The left blinker makes the tick sound as it should and it works. Would bad bulbs or sockets cause the sound to stop?


There is one "relay" that controls both left and right, one at a time, if there is not enough current flowing through it (dead bulbs, bad ground, bad wires/socket, it won't click or run.
IP: Logged
olejoedad
Member
Posts: 19699
From: Clarendon Twp., MI
Registered: May 2004


Feedback score: (5)
Leave feedback





Total ratings: 206
Rate this member

Report this Post04-09-2025 04:47 PM Click Here to See the Profile for olejoedadSend a Private Message to olejoedadEdit/Delete MessageReply w/QuoteDirect Link to This Post
Sounds like either the multifunction switch in the column or a wire coming from the column.
IP: Logged
Vintage-Nut
Member
Posts: 1444
From: California
Registered: Apr 2020


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-09-2025 06:18 PM Click Here to See the Profile for Vintage-NutSend a Private Message to Vintage-NutEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
The left side blinkers work properly inside and out. The right side doesn’t / turn on the lights on the outside.

This means the turn flasher is good {maybe not as I learned below} because it uses the same voltage path for the right-side blinkers.

 
quote
When I turn on the hazard lights they work {meaning the left AND right blinkers }

The hazard uses another flasher and by-passes the turn flasher

If ALL THE BULBS {in & out} are flashing when the hazard switch is ON - this means that ALL the circuits/paths are GOOD.

Note: The Hazard Switch also by-passes the Left and Right Turn Switches

The only other circuits/paths are the Left/Right Switches...

 
quote
olejoedad:
Sounds like either the multifunction switch in the column or a wire coming from the column.


The multifunction switch {Turn Hazard Switch Assembly} has THREE Switches:
Left Turn Switch, Right Turn Switch and the Hazard Switch

Both Turn Switches are Double-Pole Double-Throw and I bet your Right Turn Switch is dead...

If you have the service manual; the schematic is under "Exterior Lights: Turn/Hazard/Etc." at the back {Section 8A}

------------------------------------------------------------------------------------------------

EDIT
I saw/read a long turn signal thread which the hazard worked; one signal will work; the other signal didn't. The problem was solved by replacing the turn flasher!

As the turn flasher is cheap, my suggestion is to try replacing the turn flasher to see if it is your problem or not...



IF replacing the turn flasher didn't help; the next step is to clean/test the Turn Hazard Switch Assembly CONNECTOR


------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles

[This message has been edited by Vintage-Nut (edited 04-10-2025).]

IP: Logged
tthrock
Member
Posts: 29
From: Lima, Ohio, USA
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post04-11-2025 11:55 AM Click Here to See the Profile for tthrockSend a Private Message to tthrockEdit/Delete MessageReply w/QuoteDirect Link to This Post
WOW, thank you for all the info.
Please do not take it down.
I need to print it out lol.
Hopefully, I will have time to take a look this weekend.
I will keep you guys updated as events unfold
Thanks again for all the help and that amazing explanation.
If that doesn’t fix it, nothing will, lol
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock