[unknown4u]

I must agree with Flash.

I did not understand that you already have change the thermostat.

Check wit a laser gauge the real temp!

Our cars can have strange electrical problems as I found out in the past as many of us.

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[banditsc]

[quote name='unknown4u' post='38159' date='Jul 12 2007, 01:06 PM']I must agree with Flash.

I did not understand that you already have change the thermostat.

Check wit a laser gauge the real temp!

Our cars can have strange electrical problems as I found out in the past as many of us.[/quote]



Ya, I was thinking of getting a laser gauge to check it out. The dash ground in the footwell is actually the only ground I haven't removed yet. My back wasn't into the contourting required for that one at the time. I will clean that one up soon, some of my engine bay grounds were prefect so the one in the car can't be that bad. For the alternator I will have to check the bearings, also was figuirng I would let one of the parts stores do wone of those free tests on it.

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[wingers]

I had similar fault and turned out to be the thermostat.

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[Renalicious]

Few the past few days I have been experiencing higher than normal engine temps, and upon inspection, diminishing coolant levels. Naturally this can't be considered normal. At first I though it might have been because I was running low on coolant, or too much water, but it turned out that I'm definitely leaking. Took it to the shop for a quick inspection and the verdict is that I need a new radiator <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />



Borrowed time? Expired! <img src="/forum/images/smilies/968/dry.gif" class="smilie" alt="" />



From what they told me the seals on the plastic fan assembly, where it's mounted to the radiator, have degraded and are starting to leak from both sides. Adding insult to injury is that this week I can't carpool to work because my buddy is on vacation, and the shop date is friday. I guess the best I can do is keep a spare container of water in the car at all times, baby the throttle, and find smooth roads... and don't get stuck in traffic.



One good thing that will come from this is that I'll have a new radiator, hehe, and they'll also create a plan of attack against these oil leaks too. Clean off the engine bay, do the rad, let the car run for a while and see where the problem is. Here's hoping it will be the last of it. And maybe after this the car will be ready for long trip / 10 more years before anything major happens again <img src="/forum/images/smilies/968/wink.gif" class="smilie" alt="" />

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[lsinlv]

well....better late than never!!



I found the issue. It seems the t-stat seal (the squared seal that sits on the perimter of the t-stat) some how disintigrated?!?!? only found small pieces of it still on the t-stat. this allow coolant flow under load to flow and not allow the radiator to work correctly.



all is good.

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[shepherd32]

From the original post:



[quote name='lsinlv' timestamp='1183046764' post='37589']

The front lower bumper cover is gone (has been since we bought the car), but the engine cover/tray is intact.

[/quote]





That is your problem right there. I believe this piece is also reffered to as the bat-wing and it is integral to the cooling system on the 968. It seals the bottom of the radiator intake and directs and slows the air through the radiator. Without it, cooling ability is compromised greatly, especially at high speed. With the ac on, it turns on your cooling fans which negates this issue, but as you speed up, the fans turn off and the radiator gets less and less efficient. That's why it heats up at speed, but cools at slow speed. Find one from a junkyard or someplace, and it'll get better.



I had to run my car with no bat-wing for a few weeks after I hit a bear with the drivers side headlight and had the exact symptoms you have. This may be from a while ago, but it's never too late to solve a mystery.

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[Cloud9...68]

My car was doing exactly the same thing before I started the rebuild/track car conversion project - as soon as I turned the AC on, the temperature started to climb. But I think I may have discovered the cause. As I was poking around under there installing my dual oil coolers (from RS Barn), I found that the shrink wrap and a good chunk of the insulation on the bundle containing the wires for the fan were sliced through (from a belt perhaps?), leading to a condition where I could easily see the wires intermittently touching. I'm wondering if this was preventing the fans from coming on as they're supposed to when the AC is turned on. I'll patch everything up, and we'll see in 2032 when I finally have this project finished! <img src="/forum/images/smilies/968/ohmy.png" class="smilie" alt="" />

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