[quote name='Cloud9...68' timestamp='1347715200' post='132785']
RL,
What would concern me in your case is that it's behaving differently than before. Humans are very good at picking up on very subtle changes from what was the prior norm, and while it could just be the gauge, I wouldn't assume that. Mine did exactly the same thing - it NEVER went above the lower (8 oclock line) on even the hottest days on the street, and only barely above 8 oclock on the track. But then all of a sudden, it changed - 9 oclock became "the new normal" with excursions to the upper line at the track. I was advised to not worry about it, because our gauges tend to be unreliable, but when I was in the process of installing my RS Barn dual oil coolers as part of my track car build, I noticed the insulation on the fan wires was completely cut through, exposing the bare wires. I patched them all up. I haven't fired it up yet, but when I do, I suspect my hot running problem will be gone.
What happens when you turn the AC on (assuming you still have AC)? This is supposed to activate the high speed fan and bring the temps down, but in my case, the temp actually went UP noticeably when I turned on the AC, and I've heard several people say the same thing. Are you absolutely sure the fans are working correctly? These engines are pretty loud, so it isn't always easy to tell. After thoroughly checking the fan function, I'd get an IR temp gun and measure the temperatures of your hoses and report back, as there is a lot of experience here with what these temperatures should be. I understand Clark's Garage has a good cooling system troubleshooting guide. But basically, I would check every aspect of the cooling system out before concluding you problem is just a flaky temperature gauge. Good luck.
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I think clarks trouble guide says , they should kick in on low when you hit the ac button , only when the compressor is engaged it should go to high .
I did all the tests everything works fine , exept mine does not kick into high when the compressor engages , found that out yesterday .
I had slightly higher temp than normal with the AC on only when temperatures are above 85 degrees , wich is only a couple weeks of the year here in Dutch land .
Because of the SC instal , i checked thermostat etc , and put low temp switch in the radiator .
Seems i need a new FAN relay after all .
Just not a 100% sure if it should go to high whe the compressor kicks in , even clarks trouble guide says so , could someone confirm the switching to high with AC on and compressor kicking in ?
And could there b a difference between a early R12 and later R134 car ?
There is a note , it should kick in high by the pressure switch in the AC system , so that could be it a faulty pressure switch , i thought it only sensed high and low , so it switches off to save you compressor and system .
Crap end up with more questions than anwsers .
