Hi there,

I have not fixed the radiator issue but something else surfaced a few days ago. I was driving in a heavy traffic and noticed that the temperature was slightly raised (normal) but the RPM was intermittently dropping to 500-600 and the oil dashboard light came on and off. I don't suspect the oil pump cause it runs well in any other condition. I was stuck in traffic for well over an hour. Any idea what can cause it. Is it related to temperature exchange and "defective" cooling system (see my other thread)?

Thanks

 

You could have a bad oil pressure switch, but you should use a gauge and ck the oil pressure, or just install a new oil pressure switch.