Well they put a new pump in and problem is gone. I want to take the old pump apart to see what failed. I'll let everyone know when I do. Thanks for all the good suggestions.
Overheating problem, help!
Melting Slicks
Joined: Feb 2006
Posts: 3,400
Likes: 3
From: Sarasota Florida
Read this thread and see if it fits for your problem (I hope it doesn't)
http://forums.corvetteforum.com/show....php?t=1696062
http://forums.corvetteforum.com/show....php?t=1696062
Advanced
Joined: Feb 2007
Posts: 91
Likes: 0
From: Lewisville Texas
im having the same problem on my 99 stock engine coupe. it will shoot up to 260 real quick and then back down to 203 or so like it usually runs. i do have an oil change warning showing tho, and had that planned for tomorrow anyway. We think its possily the thermostat whick is a very simple fix. or it could be the temp sensor, b/c of how fast the temp guage is moving. There is no way that the h2o temp could change from 260 to 205 in seconds, just not possible. i read the thread on the clogged radiator, a possibility but prolly not. So tomm morn i will change oil, new thermostat, new temp sensor, flush radiator and report back.
And all this stress is on top of me taking a 750 mile trip from texas to iowa on thursday!!
And all this stress is on top of me taking a 750 mile trip from texas to iowa on thursday!!
Advanced
Joined: Feb 2007
Posts: 91
Likes: 0
From: Lewisville Texas
ok my car ran fine all morn and like 15 miles no problems. So i changed the oil and installed a new thermostat(180 stock temp) and new coolant. drove a lil while and while idling thru a parking lot it overheated again. the temp needled goes from 205 straight to 260 and stayed there. But i think it is something electrical. like a short or something. cuz it heats up way too fast. then the car would idle funny, "check guages" would flash and A/C turns on and off. The car doesnt steam or loose coolant to the ground. and the oil temp guage says 208-212, which should be the same as the coolant temp.WTF??
Has anything like this ever happened to anyone?? any help with a bad ground or simular symptoms would be great. thanks
Has anything like this ever happened to anyone?? any help with a bad ground or simular symptoms would be great. thanks
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Le Mans Master
Joined: Feb 2006
Posts: 5,267
Likes: 40
From: Phoenix AZ
Racer
Joined: May 2007
Posts: 307
Likes: 0
From: Chouteau Oklahoma
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
Bill
Bill
If you havent done ground maintenance, it would be a good idea!
Advanced
Joined: Feb 2007
Posts: 91
Likes: 0
From: Lewisville Texas
well im back in the same boat
it wasnt just a ground afterall, cuz i drove for about 20-30 miles today and the temp guage pegged out to 260 again. and back and forth from normal to 260. i just dont get it!
it wasnt just a ground afterall, cuz i drove for about 20-30 miles today and the temp guage pegged out to 260 again. and back and forth from normal to 260. i just dont get it!
Advanced
Joined: Feb 2007
Posts: 91
Likes: 0
From: Lewisville Texas
thanks, i was to replace the sensor but figured it was good b/c it works properly most the time. When this happens the DIC say "coolant temp xxx" has anybody seen that before? and the oil temp sstays at about 203-210 during all of this.
Burning Brakes
Joined: Nov 2006
Posts: 961
Likes: 0
From: Torrance CA
I would try replacing the sensor. Good Luck!
Melting Slicks
Joined: Feb 2007
Posts: 2,788
Likes: 137
From: center of Kalifornia
Read this thread and see if it fits for your problem (I hope it doesn't)
http://forums.corvetteforum.com/show....php?t=1696062
http://forums.corvetteforum.com/show....php?t=1696062
Proof again........
Thread Starter
Intermediate
Joined: Oct 2004
Posts: 41
Likes: 0
From: San Francisco
So I havent got my car back yet. I am also wondering how you would know if its just a bad thermostat vs. a bad water pump ? The coolant wasn't circulating in the car and that could be due to either couldn't it ?
Any opinions ?
Thanks!!
Any opinions ?
Thanks!!