Well,

I found out why the car was running like crap.. plugs were gapped wrong. ANYWAYS! I got to driving her today, drove her for a good 15 mins with no probs. Then when sitting at a stop light, I noticed the temp gauge going up, started moving again at the speed limit and it sank back down.. But here is where it gets WEIRD. When I would smash on the gas, the temp gauge would drop down to below the C marker and then slowly rise back up to normal operating temps.

What would cause this..

I need to know ASAP as I have started a new job and driving is the ONLY way there. Bus would take too long and walking would take a day and a half.

Please help

Ian

 

Okay, I just went through a similar problem. My temp gauge would go the middle mark and drop slightly below and it would repeat when I catch red lights. The solution was to replace the thermostat and while your at it, replace the radiator cap.

 

Assuming that your current level is fine, i would guess the t-stat as well, or possibly the water pump going bad? How long has it been since timing belt change/water pump change?

 

t-stat was just changed. waterpump was taken from my old motor and was perfect, i am going to be doing a timing belt SOON. I should do a waterpump too ya?