When you come to an idle for a long time, turn on the A/C to lower the
engine temp. That starts the A/C fan which also cools the coolant in
the C4.

Bob


wrote:

>Dale,
>
>Thanks for your reply. I wasn't aware 230 was normal. I thought that
>was hot. Why the huge fluctuation in temp when idling?
>
>Thanks
>
>Joe
>
>
>On Wed, 18 Aug 2004 12:27:40 GMT, Dale > wrote:
>
>>Before you spend any more time and money, what makes you think it is
>>overheating? A C4 can easily go to 230 when sitting at idle on a hot
>>day. This is normal.
>>
>>Dale
>>Still Corvetteless after 3 months. ARGH!!!
>>
>>On or about Wed, 18 Aug 2004 02:50:58 GMT, wrote or
>>did cause to be written:
>>
>>>I need some help. 1990 c4, temp is good when driving but when idling
>>>the temp begins to rise and almost overheats. No leaks, replaced all
>>>seals and gaskets, changed thermostat. Water pump appears to be
>>>working but not well, no leaks from weep holes. Is the pump starting
>>>to fail but no symptoms? What do you think? I plan to change the pump
>>>out this week end, I am wondering if I am overlooking something.
>>>
>>>Thanks
>>> Joe