|
Author
|
Topic: Anyone have a transbrake,two step wiring diagram?
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-01-2005 08:08 PM
 
I need to take a look at a wiring diagram as something is not right with my new dynamic C4 with transbrake. I have it conected to my 2 step so the transbrake and 2 step are activated at the same time. The solenoid will engage and release when the rpms are low but if I push the transbrake button and put the peddle to the floor the car comes up on the 2 step but when I release the button the car doesn't move. Could it be low amperage or just a wiring issue. This is the way I had my old C4 with brake wired and it worked perfect. Any ideas?
Thanks.
|
jsracingbbf
unregistered
|
posted 05-01-2005 10:10 PM
You can download wiring diagrams at MSD.comAlso try posting this question on the MSD sponsored tech forum, those guys work at MSD.
http://www.msdignition.com/forums/invboard1_1_2/upload/index.php?s=4e5d0b34c415f71aba55f28282464861&act=SF&f=2
------------------
JS
"never submit yourself to scientific tests no matter how bad you need the money, for all you know they could have erased your memory and YOU WERE REALLY SOMEBODY BEFORE"
69 Mustang Pro ET Drag
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-02-2005 08:59 AM
Thanks, I checked the MSD wiring diagram and I do have it correct. So, now where do I go?
I called Dynamic and they have never heard of this problem. Just my luck! They are wondering if the solenoid was bumped and out of allignment. I will check this out and continue to hunt down the problem.
Keep the ideas coming.
Thanks
|
Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
|
posted 05-02-2005 09:49 AM
Verify voltage at the solenoid. Both in and out.
Have you tested this trans and brake without the two step?
If not, try that first.
I doub't the solenoid allignment theory.
If the trans was dyno tested that would be nearly impossible to not catch.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-02-2005 10:05 AM
I was told it was dyno tested and I have not tried the transbrake without the 2 step other than removing the chip and that didn't help. I will try wiring the transbrake on its own to see if that helps. The funny thing is it will work at low rpms and the brake is spring loaded rather than fluid activated so if the brake goes on it should come off automatically without power when the switch is released. I called ATI and Dymamic to get info with no results yet.
|
Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
|
posted 05-02-2005 10:15 AM
The solenoid should engage and diss-engage when power is applied and removed, running or not.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-02-2005 10:25 AM
Voltage at battery 12.60(engine not running),voltage going to switch 12.40. I've tested the switch with the engine off and it clicks in and out without any resistance. I did notice that the fluid level is quite a bit on the high side(not sure if this would cause a valve body issue but I will lower it).
|
Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
|
posted 05-02-2005 11:26 AM
Voltage is perfect.
Fluid is not the issue.
Valve body probably is.
Will it work at all (running engine) without the two step wired in?------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-02-2005 12:21 PM
If the car is running and rolling very gently forward in first gear then I push the transbrake button the car locks up. So the brake is engaging. If I push in the brake button and increase rpm to about 3000 and release the brake the car lunges forward. So, it seems to work there. If I engage the transbrake bring the rpm up on to the rev limiter at 4000rpm the limiter comes off when I release the button but the car will not move!
Thanks for you help. I'm really baffled on this one. Tomorrow I will re-wire the brake without the 2 step and see if it works at 4000 rpm.
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-04-2005 09:04 PM
Well, I rewired the transbrake solenoid to the battery and by-passed all other electronics. The solenoid is definately releasing after I let go of the transbrake switch. It must be something in the valve body that is causing the problem. I'll be off to the tranny shop on Friday to have them check the valve body and if nothing is found my old tranny will go back in the car for now. What a pain in the a**!
Thanks for your help guys.
[This message has been edited by 70coupe (edited 05-04-2005).]
|
Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
|
posted 05-04-2005 11:44 PM
Sorry.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
|
70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
|
posted 05-12-2005 10:28 PM
Well, it was in the valve body. The new one works perfect. I hope all goes well at the track on Sunday.
Thanks guys.
|
Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
|
posted 05-12-2005 10:34 PM
That's what I figured.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
|
