Just fixed hesitation problem

Just fixed a random hesitation problem I have had for the last 5 months.  My parents have just turned up after a month long trip to QLD where they had the same issue.  The symptoms where sudden and temporary power loss after the engine has been running for a while and is up on temp. Ends up being the fuel pump relay is on the way out, swapped the relay and no more problems.  Both Syncros had done over 300Km’s our 2WD did over 600Km no problem but worth changing the relay before it stops you when you’re out on a trail.   Just thought I would let others know.
Cheers,
 
Michael R
Hi Michael,
Any sign of heating/melting/discoulouration on either/both old relays, or some other clue?
Cheers.
Ken


To: Syncro_T3_Australia@yahoogroups.com
From: type500@yahoo.com
Date: Sat, 6 Oct 2012 02:24:09 -0700
Subject: [Syncro_T3_Australia] Just fixed hesitation problem

 

Just fixed a random hesitation problem I have had for the last 5 months.  My parents have just turned up after a month long trip to QLD where they had the same issue.  The symptoms where sudden and temporary power loss after the engine has been running for a while and is up on temp. Ends up being the fuel pump relay is on the way out, swapped the relay and no more problems.  Both Syncros had done over 300Km’s our 2WD did over 600Km no problem but worth changing the relay before it stops you when you’re out on a trail.   Just thought I would let others know.
Cheers,
 
Michael R

Hi Ken,
No physical change to the outside of the relay, It is only when you pull it apart that you can see the point are warn. We figure that once the engine bay heats up the resistance builds up at drops the coil out temporarily.  Fuel rail pressure drops and you get fuel starvation.  The Coil cools and relay activates again.  The fuel pump will start up not a problem when cold so hard to track down until the issues is actually happening.  Just funny that Dad had the problem in his Trakka and I had the same issues on my caravelle. I was lucky he pick up to a spare relay for me as well.
 
Cheers,
 

From: Ken Garratt <unclekenz@hotmail.com>
To: _T3_Australia forum Syncro <syncro_t3_australia@yahoogroups.com>
Sent: Saturday, October 6, 2012 10:29:14 PM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
 
Hi Michael,
Any sign of heating/melting/discoulouration on either/both old relays, or some other clue?
Cheers.
Ken
To: Syncro_T3_Australia@yahoogroups.com From: type500@yahoo.com Date: Sat, 6 Oct 2012 02:24:09 -0700 Subject: [Syncro_T3_Australia] Just fixed hesitation problem  
Just fixed a random hesitation problem I have had for the last 5 months.  My parents have just turned up after a month long trip to QLD where they had the same issue.  The symptoms where sudden and temporary power loss after the engine has been running for a while and is up on temp. Ends up being the fuel pump relay is on the way out, swapped the relay and no more problems.  Both Syncros had done over 300Km’s our 2WD did over 600Km no problem but worth changing the relay before it stops you when you’re out on a trail.   Just thought I would let others know.
Cheers,
 
Michael R

Michael,

Where in the engine bay is the relay located?

Les

 


From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem

 

Hi Ken,

No physical change to the outside of the relay,

I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
 
Michael,
Where in the engine bay is the relay located?
Les
 
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
 
Hi Ken,
No physical change to the outside of the relay,
Those two relays ..
one is the Main Relay ( power to injectors, oxygen heat, ecu )

the other is the fuel pump relay. That's the one on the right.

Most handily one can jumper the fuel pump to run just by connecting the middle top, and the middle bottom wires where they are plugged onto the bottom of that relay. Even with key off. With either a small jumper wire or even with small screwdriver blade as a quick test.
- or to pump fuel out of a fuel tank you are going to remove ..any time you just want to quickly run the fuel pump.
or bypass the ecu portion of the circuit.

Scott
www.turbovans.com


On 10/6/2012 5:24 PM, greg esposito wrote:
I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
Michael,
Where in the engine bay is the relay located?
Les
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
Hi Ken,
No physical change to the outside of the relay,

Spot on Scott,
It's the 40A relay on the right. also the one I drop out when it switch to LPG.
 
Cheers,

From: Scott Daniel - Turbovans <ScottDaniel@turbovans.com>
To: Syncro_T3_Australia@yahoogroups.com
Cc: greg esposito <gregespo73@yahoo.com>
Sent: Sunday, October 7, 2012 11:38:34 AM
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
 
Those two relays ..
one is the Main Relay ( power to injectors, oxygen heat, ecu )

the other is the fuel pump relay.   That's  the one on the right.

Most handily one can jumper the fuel pump to run just by connecting the middle top, and the middle bottom wires where they are plugged onto the bottom of that relay.   Even with key off.  With either  a small jumper wire or even with small screwdriver blade as a quick test. 
  - or to pump fuel out of a fuel tank you are going to remove ..any time you just want to quickly run the fuel pump.
or bypass the ecu portion of the circuit.

Scott
http://www.turbovans.com/


On 10/6/2012 5:24 PM, greg esposito wrote:
 
I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris mailto:leslieharris@optusnet.com.au
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
 
Michael,
Where in the engine bay is the relay located?
Les
 
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
 
Hi Ken,
No physical change to the outside of the relay,
Hi Scott,
in other words, we could install a jumper switch into that box or anywhere convenient  to switch on the pump when experiencing problems ?? this is standard in aeroplanes as those guys don't trust the mechanical pumps and therefore the check before take off and before landing does include
FUEL PUMP ON. This , of course,  does relate to the secondary electrical fuel pump.
Hart  




On 07/10/2012, at 1:38 PM, Scott Daniel - Turbovans wrote:

 

Those two relays ..
one is the Main Relay ( power to injectors, oxygen heat, ecu )

the other is the fuel pump relay.   That's  the one on the right.

Most handily one can jumper the fuel pump to run just by connecting the middle top, and the middle bottom wires where they are plugged onto the bottom of that relay.   Even with key off.  With either  a small jumper wire or even with small screwdriver blade as a quick test. 
  - or to pump fuel out of a fuel tank you are going to remove ..any time you just want to quickly run the fuel pump.
or bypass the ecu portion of the circuit.

Scott
www.turbovans.com


On 10/6/2012 5:24 PM, greg esposito wrote:
 
I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
 
Michael,
Where in the engine bay is the relay located?
Les
 
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
 
Hi Ken,
No physical change to the outside of the relay,



Right ...electric boost pump for take off an landing, for more likelihood of fuel getting where it should

One could, use a cockpit located switch to power your fuel pump directly this way .
at the relay contacts.
It's nothing more complicated than battery power on one side, the the power feed to the fuel pump on the other side.
You'd want to make sure you never leave it on when leaving your rig ..
as the pump would keep running and drain the battery.

or ..you could use a '15' 12 volts 'ignition on' power source....then once key is off, it would be off too.
Scott
www.turbovans.com

On 10/6/2012 9:04 PM, Hartmut wrote:
Hi Scott,
in other words, we could install a jumper switch into that box or anywhere convenient to switch on the pump when experiencing problems ?? this is standard in aeroplanes as those guys don't trust the mechanical pumps and therefore the check before take off and before landing does include
FUEL PUMP ON. This , of course, does relate to the secondary electrical fuel pump.
Hart




On 07/10/2012, at 1:38 PM, Scott Daniel - Turbovans wrote:

Those two relays ..
one is the Main Relay ( power to injectors, oxygen heat, ecu )

the other is the fuel pump relay. That's the one on the right.

Most handily one can jumper the fuel pump to run just by connecting the middle top, and the middle bottom wires where they are plugged onto the bottom of that relay. Even with key off. With either a small jumper wire or even with small screwdriver blade as a quick test.
- or to pump fuel out of a fuel tank you are going to remove ..any time you just want to quickly run the fuel pump.
or bypass the ecu portion of the circuit.

Scott
www.turbovans.com


On 10/6/2012 5:24 PM, greg esposito wrote:
I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
Michael,
Where in the engine bay is the relay located?
Les
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
Hi Ken,
No physical change to the outside of the relay,




Hi Scott,
Interesting and valuable information, thank you.
Cheers.
Ken


To: Syncro_T3_Australia@yahoogroups.com
CC: hartis@live.com.au
From: ScottDaniel@turbovans.com
Date: Sat, 6 Oct 2012 21:51:32 -0700
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem

 
Right ...electric boost pump for take off an landing, for more likelihood of fuel getting where it should

One could, use a cockpit located switch to power your fuel pump directly this way .
at the relay contacts.
It's nothing more complicated than battery power on one side, the the power feed to the fuel pump on the other side.
You'd want to make sure you never leave it on when leaving your rig ..
as the pump would keep running and drain the battery.

or ..you could use a '15'  12 volts 'ignition on'   power source....then once key is off, it would be off too.
Scott
www.turbovans.com


On 10/6/2012 9:04 PM, Hartmut wrote:
 
Hi Scott,
in other words, we could install a jumper switch into that box or anywhere convenient  to switch on the pump when experiencing problems ?? this is standard in aeroplanes as those guys don't trust the mechanical pumps and therefore the check before take off and before landing does include
FUEL PUMP ON. This , of course,  does relate to the secondary electrical fuel pump.
Hart  




On 07/10/2012, at 1:38 PM, Scott Daniel - Turbovans wrote:

 
Those two relays ..
one is the Main Relay ( power to injectors, oxygen heat, ecu )

the other is the fuel pump relay.   That's  the one on the right.

Most handily one can jumper the fuel pump to run just by connecting the middle top, and the middle bottom wires where they are plugged onto the bottom of that relay.   Even with key off.  With either  a small jumper wire or even with small screwdriver blade as a quick test. 
  - or to pump fuel out of a fuel tank you are going to remove ..any time you just want to quickly run the fuel pump.
or bypass the ecu portion of the circuit.

Scott
www.turbovans.com



On 10/6/2012 5:24 PM, greg esposito wrote:
 
I think it is one of two in that plastic box above the coil. Greg E

From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Sunday, 7 October 2012 10:10 AM
Subject: RE: [Syncro_T3_Australia] Just fixed hesitation problem
 
Michael,
Where in the engine bay is the relay located?
Les
 
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Michael Roberts
Sent: 07 October 2012 09:48
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Just fixed hesitation problem
 
Hi Ken,
No physical change to the outside of the relay,