R34 Gtt Won't Start In Cold Morning

[Weatherley]

So I have an r34 Gtt and I live in mt barker area, I never used to have a problem with it starting but with these colds mornings we have been having -2 it won't start, it will just turn over and sometimes a little splutter but won't start and the battery will start to go flat before it will start. But when I get home after work it will start first turn of the key. I don't know what to try any ideas will be much appreciated

Cheers Dale

[Ben C34]

New battery

[Weatherley]

I still get a solid 10 to 15 minutes of trying but it just turns over then slowly dies down

[Ben C34]

Oh ok.

Perhaps the coolant temp sensor is a bit suss.

Otherwise I would check new plugs in and see what happens.

[Weatherley]

Well sometime my temp gauge will just go from normal operating temp then just drop to cold all of a sudden but then will come back up to normal, I read a bit on why it would do that and all I could find was the connection to the temp sensor might be poor making it drop in and out. I checked the wires but they were that bad, why would the temp sensor stop the car from starting?

I am also doing plugs tonight

Thanks for your help ben

[Ben C34]

There are 2 temp sensors. One for the gauge and on e for the ecu.

The gauge one will make no difference at all.

The ecu uses the sensor to richen up the mixtures, sort of like putting on the choke. If it is faulty it would cause starting issues when cold.

They are pretty cheap but also easy to check. You need a multimeter and measure it's resistance at known temperatures. Compare against specs, Google should help there.

[scotty nm35]

Could have something to do with it, except the sensor for the dash is different to the ecu temp sensor.

It leads me to the conclusion the power to the sensors may be shorting or have a bad connection somewhere.

[Weatherley]

Ok ill do the plugs tonight

And I'll also check the temp sensor.

[defari]

CCA rating for your battery is too low / or battery is on its way out / possibly alternator issues.

[niZmO_Man]

What engine mods?

[blind_elk]

Had a similar problem with my 32 - even jump start wouldn't get the engine to start. Turned out the starter motor was cactus with a short in the armature. New starter motor, no more starting problems.