Help!

[woodman05]

can anyone tell me what would happen if i disconnected the wire from the engine coolant temperature sensor which goes to the diesel engine control module. as i know why my diesel takes longer to start when warm or hot,, Before anyone says i have replaced the engine coolant temperature sensor... car starts lovey with this wire diconnected...........

thanks :lol:

[Scorpiorefugee]

OK. Been there and done that.

 

With the wire disconnected (as I remember) this simulates a cold engine and, whatever the temperature of the engine as displayed on the instrument panel, the glow plugs will stay on for about 15 seconds every time you operate the ignition switch. This may have some effect on the running of the engine but I didn't leave mine off for long enough to find out.

My problem, and possibly yours, was that the temperature sender had faulted to send a signal that the engine was always very hot. Note that there are two senders in the unit, one for the gauge and one for the control system. (Daft or what?). this meant that the gauge registered normal but I had no glow plug activity with the glow lamp only showing for about a second at most. The car started normally in the summer but took about 5-10 seconds to fire up on very cold mornings.

Another symptom was that the cooling fan always came on for a few minutes after I turned the engine off, irrespective of temperature.

 

The cure - fit a new one. (

[RADIOTWO]

can anyone tell me what would happen if i disconnected the wire from the engine coolant temperature sensor which goes to the diesel engine control module. as i know why my diesel takes longer to start when warm or hot,, Before anyone says i have replaced the engine coolant temperature sensor... car starts lovey with this wire diconnected...........

thanks :o

Hi Woodman

Sorry I don't have a Galaxy, so cannot help with your fault, but if someone else comes up with a soloution Great !

 

Don't know how you are with electrics ? but if it a matter of disconecting while starting, then reconnect when running

you could wire a relay in to disconect the sensor while you start it, then once the car is running the wire would be

reconnected.

 

all you need is a 5 pin relay, take one connection from the low tention of the starter motor, the other side of the coil

to earth, and the two remaining conectors on the relay, one to the wire you have taken off the sensor, the other to

the sensor.

 

The only other thing to mention is you will need to make sure the wires for the sensor is on the two N/C connetors,

so when you turn the key the relay opens the contacts.

 

Hope that makes sence, if not drop me a PM

 

Radiotwo