[samof]

The gel is put in at manufacture to protect against corrosion. It doesn't cause poor contact itself.

Well, final I can say that this silicon gel was the main cause of all problems. As soon as I have cleaned the connector with silicon solvent, dry it with air compresor and grease it contact spray, all problems gone away....

Also my electrican said as you.... this can not be a problem... but it was!!!!

 

[samof]

Hi,

As mentioned before I still have problems with my F4R 2.0t vel satis, complete fuel injection faults...
all important modules were replaced: ECU, body throttle, acc. pedal, ecu-throttle wiring, wiring with pedal,... but still no luck
also new FW on ECU

The problem remains; fuel injection fault, ...and all related faults: body throttle, acc pedal, ESP, handbrake,..it happens very often (in two days after leaving the R garage)

Well, yesterday it happened again. I have opened the location of ECU; and found that ECU connectors have like silicon gel inside the pin hole, that connects to ECU pins.
I haven't done anything else, but just as I could clean away these silicon.
After that I started car with no problem... Could this silicon gel be the problem of insuficient electrical connection of modules to ECU.

Did anyone heard about like silicon gel issues?

In one post for Clio, there was also mentioned that wires of ECU were worn by the metal housing, causing the short circuit to ground.

 

[samof]

hi,

I have SAGEM s2000rpmt ecu
I can write it down ecu-throttle pins to you, if you have the same ECU.

samo

 

[samof]

Hi,
I have quite the same probems...I am owner of VS 2.0t with LPG installation, 2002 year with F4R, same as laguna II.
Two months ago, while driving, the car prompted Fuel Injection fault(body throttle regulation is switch off and motor is at cca 3500 RPM).
At the R service, the body throttle was replaced (new), as they said that the potentiometers of both measuring tracks were dead. After replacement the problem occurred again and again… INJ fault, ESP & ABS fault, handbrake… this is all connected with ECU fault behavior, as I was told.
They checked all the wiring of ECU, body throttle, gas pedal, …. all the connections to the injection ECU, replaced all ECU relays, connection between ECU and body throttle…
Finally they concluded that ECU is faulty and I bought used one. But the problem stayed…so ECU seems it is OK…unless both ECU had the same fault
ECU was also upgraded with last FW (some posts suggests upgrade for laguna).
They have no clue how to help me,…. I forgot to mention, that car was moved also to second R dealer/service…but also no luck…
Now they are waiting me to allow ordering new ECU which is 1350€… but I am worried that it is not ECU faulty, as the problem is the same from beginning

It is interesting, that after throttle replacement problem/fault occurs when the car is started (during initialization), and not during the drive (during the drive happened just at the beginning, two months ago), or maybe this only by chance.
What else to do...