Jump to content

Photo

clutch switch wires

- - - - -

  • Please log in to reply
11 replies to this topic

#1
dmq

dmq

    Member

  • Members
  • PipPipPip
  • 37 posts
  • Location:New Orleans
  • Region:delta
  • Car Year:1991
  • Car Number:504

My clutch switch stopped working shortly before heading to grid. there are 2 sets of wires going to the switch. In my haste to bypass it, i cut the 2 small wires.  I realized my mistake, unplugged the 2 bigger wires, put in a jumper wire, and got it started. I haven't fixed the 2 small wires yet (cut them pretty close to the connector) do I need to fix them, and if so. Do i need to replace the clutch switch too. I'd rather not get under the dash and buy a part if it isn't necessary. 

What do the 2 small wires do?  I've read post where people say they send a signal to the ecu. but why does the ecu need to know if your clutch is in or not and what changes does it make?  I haven't noticed a difference in the idle and everything seems normal.


Bona fide - A bonafide Spec Miata driver

#2
tom1977

tom1977

    Member

  • Members
  • PipPipPip
  • 52 posts
  • Location:Olympia WA
  • Region:Reno/SFR/NWR
  • Car Year:1994
  • Car Number:86

I bet you have a cruise control car... They kill the speed setting when pushing in the clutch if I am not mistaken.



#3
dmq

dmq

    Member

  • Members
  • PipPipPip
  • 37 posts
  • Location:New Orleans
  • Region:delta
  • Car Year:1991
  • Car Number:504

great. thanks!


Bona fide - A bonafide Spec Miata driver

#4
SaulSpeedwell

SaulSpeedwell

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 792 posts
  • Location:NEOhio

The engine won't run any different if you short the clutch interlock switch.

 

I short this switch on all my cars, street or race, for two reasons:

1.  When you push the clutch in to start the car, you are loading the ONE crankshaft thrust "saddle" bearing with the full pressure plate load, and you are doing so DRY, with no oil pressure or oil flow.

2.  You can "drive" the car onto a trailer or elsewhere using the starter motor, if and when needed.

 

As is well known, the clutch interlock switch was originally implemented only in cars sold in Texas, where drivers are normally too busy hoisting state flags and adjusting beltbuckles and cowboy (shock) hat rake angle and blueprinting spurs and rasslin' steers (and racks and pinions), and thus cannot be bothered to depress the clutch or put the transmission in Neutral prior to turning that there engine startin' thing, y'all. 


  • Ron Alan, Alberto, Jeff Wasilko and 1 other like this

For faster reply than PM:  miataboxes>>>AT<<<gmail>>DOT<<<com


#5
Bad Rusty

Bad Rusty

    Member

  • Members
  • PipPipPip
  • 188 posts
  • Location:Paradise Valley
  • Region:Arizona
  • Car Year:1999
Any idea why I might see reverse lights flash when people shift? I've noticed it on a few cars (all really fast I might add)??
Make it Rain - Made Paypal donation of $100+ Bona fide - A bonafide Spec Miata driver

#6
Johnny D

Johnny D

    Veteran Member

  • Moderators
  • 6,121 posts
  • Location:Fremont, CA
  • Region:San Francisco
  • Car Year:1999
  • Car Number:88

Any idea why I might see reverse lights flash when people shift? I've noticed it on a few cars (all really fast I might add)??


This is perfect to bring up, maybe nothing but maybe something. Something the CCC should check out.
J~
2011 NASA Western Endurance Racing Championship E3 Champ
We have a Winnah! - Won their 1st race... Congratulations! Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver Novel Approach - When a paragraph simply won't do... Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill Instigator - Made a topic or post that inspired other Make it Rain - Made Paypal donation of $100+

#7
davew

davew

    Veteran Member

  • SMembers
  • PipPipPipPipPip
  • 2,297 posts
  • Location:Beloit, Wi
  • Region:Chicago
  • Car Year:1999
  • Car Number:72

Any idea why I might see reverse lights flash when people shift? I've noticed it on a few cars (all really fast I might add)??

eads are
Whomever worked on the trans last, installed the neutral switch and the back-up light switch in the wrong holes. Very easy to do as the threads are identicle

Dave

Dave Wheeler
Advanced Autosports, the nations most complete Spec Miata shop
Author, Spec Miata Constructors Guide, version 1 and 2.0

Building Championship winning cars since 1995

4 time Central Division Spec Miata Champion car builder 2012-2013-2014-2017

Back to Back June Sprints Spec Miata 1-2 finishes 2016 and 2017

5 time June Sprints winner in Mazda's

6 Time Northern Conference Champion Car Builder

2014 SCCA Majors National point Champion car builder

2014 SCCA Runoffs winner, T4 (Bender)

2014 Central Division Champion, ITS (Wheeler)

2013 Thunderhill 25 hour winning crew chief

2007 June Sprints winner, (GT1, Mohrhauser)

Over 200 race wins and counting.
www.advanced-autosports.com
dave@advanced-autosports.com
608-313-1230

Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill We have a Winnah! - Won their 1st race... Congratulations! Sponsor / Advertiser - Site sponsor / advertiser... support these guys! Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver

#8
Alberto

Alberto

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 1,471 posts
  • Location:Mountain View, CA
  • Region:SFR
  • Car Year:1990

Any idea why I might see reverse lights flash when people shift? I've noticed it on a few cars (all really fast I might add)??

 

I find that pretty frickin funny. :)


Bona fide - A bonafide Spec Miata driver

#9
SaulSpeedwell

SaulSpeedwell

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 792 posts
  • Location:NEOhio

Wheeler is full of crap.  It is well known that frontrunners install a special 6th gear in place of what is normally the Reverse gear.  This is why you never see frontrunners back up!


  • mellen and Jamz14 like this

For faster reply than PM:  miataboxes>>>AT<<<gmail>>DOT<<<com


#10
Tom Sager

Tom Sager

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 1,693 posts
  • Location:Chicago Suburbs
  • Region:Central
  • Car Year:1996
  • Car Number:94

Any idea why I might see reverse lights flash when people shift? I've noticed it on a few cars (all really fast I might add)??

 

Programming error by their ECU supplier?


  • Bad Rusty and Jamz14 like this
Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver We have a Winnah! - Won their 1st race... Congratulations! Make it Rain - Made Paypal donation of $100+

#11
Bad Rusty

Bad Rusty

    Member

  • Members
  • PipPipPip
  • 188 posts
  • Location:Paradise Valley
  • Region:Arizona
  • Car Year:1999

Wheeler is full of crap.  It is well known that frontrunners install a special 6th gear in place of what is normally the Reverse gear.  This is why you never see frontrunners back up!


I already have the 6 speed, so thats not it :)
Make it Rain - Made Paypal donation of $100+ Bona fide - A bonafide Spec Miata driver

#12
davew

davew

    Veteran Member

  • SMembers
  • PipPipPipPipPip
  • 2,297 posts
  • Location:Beloit, Wi
  • Region:Chicago
  • Car Year:1999
  • Car Number:72

Wheeler is full of crap. 

 

That is a given. !!!!!!


Dave Wheeler
Advanced Autosports, the nations most complete Spec Miata shop
Author, Spec Miata Constructors Guide, version 1 and 2.0

Building Championship winning cars since 1995

4 time Central Division Spec Miata Champion car builder 2012-2013-2014-2017

Back to Back June Sprints Spec Miata 1-2 finishes 2016 and 2017

5 time June Sprints winner in Mazda's

6 Time Northern Conference Champion Car Builder

2014 SCCA Majors National point Champion car builder

2014 SCCA Runoffs winner, T4 (Bender)

2014 Central Division Champion, ITS (Wheeler)

2013 Thunderhill 25 hour winning crew chief

2007 June Sprints winner, (GT1, Mohrhauser)

Over 200 race wins and counting.
www.advanced-autosports.com
dave@advanced-autosports.com
608-313-1230

Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill We have a Winnah! - Won their 1st race... Congratulations! Sponsor / Advertiser - Site sponsor / advertiser... support these guys! Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users