C5 overheating

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Jun 3, 2015 | 10:34 AM

#21

bad455ta

Racer

Joined: Dec 2014

Posts: 257

Likes: 7

From: Shady Shores Texas

C5 overheating

I didn't get a chance to do that last night. will try today, hopefully I get an opportunity.

Jun 3, 2015 | 11:12 AM

#22

smartadze

Instructor

Joined: Jul 2014

Posts: 122

Likes: 7

Quote:

Originally Posted by Vette305

You guys think is the sensor in the gauges when it reads 250 i open the hood and no steam no bubbles the car dosent look like it over heats. It only when the ac is on and at high spoeds in nornal street it wont pass 220

Easy and cheap way to verify temperature readings: Get an infrared heat sensor-gun at Home Depot ($12 to $24 depending on sale) or Amazon ($12 free ship with Prime). Take a reading on a non-reflective surface (plastic end tank of radiator).

Dollars to croutons there is crud in your radiator. Once you jack up it is easy to remove the shrouds and blow it out from rear of radiator. Note that this is an excellent time to install a cold-air system as you will have it 75% apart.

Jun 3, 2015 | 12:30 PM

#23

Vette305

Thread Starter

Cruising

Joined: Jun 2015

Posts: 14

Likes: 0

Am starting to think that the problem is the gauge cause evrything is new

Jun 3, 2015 | 02:50 PM

#24

73Corvette

Le Mans Master

Joined: Feb 2012

Posts: 6,644

Likes: 478

From: OK

Quote:

Originally Posted by Vette305

Am starting to think that the problem is the gauge cause evrything is new

Do both gauges read the same? Have you checked the temp on the DIC, and compared it to the sweep guage?

Jun 9, 2015 | 02:34 PM

#25

bad455ta

Racer

Joined: Dec 2014

Posts: 257

Likes: 7

From: Shady Shores Texas

C5 overheating

Did you get this figured out? I haven't had a chance to mess with mine so I sent it to the shop. They ended up replacing the coolent tank and still had issues so now replacing the thermostat. They said the radiator is clean but if it's still over heating after they put in a new Stat then I'll have them pull the whole radiator and check it.
My thing with the radiator is this was not a progressive issue, it was pretty much out of nowhere so I find it hard to think blockage aside from a plastic bag would cause this...but you never know when your messing with cars.

Jun 9, 2015 | 04:44 PM

#26

bikerjim2000

Pro

Joined: Feb 2010

Posts: 507

Likes: 0

From: Country Of Mind

Quote:

Originally Posted by Vette305

Thanks for the help men today i will go and try and clean the ac condensor since the rad i new i dont think is dirty. Yea yesturday i drove like 30 min and evrything was fine then i step on it a little and the tenoerture where going up then when you stop in a red light it gets back up to normal. Ive bleed the sytem a coupe of time the only thing i havent done is clean the ac condensor and also am busing the front rad dam i dont know if that affecte whats do you think thank you

"i havent done is clean the ac condensor and also am busing the front rad dam i dont know if that affecte"

Are you saying here you are missing the lower air dam? It will matter if so......

Jun 11, 2015 | 03:50 PM

#27

bad455ta

Racer

Joined: Dec 2014

Posts: 257

Likes: 7

From: Shady Shores Texas

C5 overheating

It was my thermostat! Turns out it was stuck open and according to my mechanic, it was constantly recirculating the same coolent and unable to cool portions of it enough to stay cool under load or on really hot days. He claims to have let it sit, and run it in traffic and it didn't get above 205
Any how, I'll be picking it up today and reporting back.

Jun 12, 2015 | 12:59 AM

#28

Wikedc5

Advanced

Joined: Apr 2013

Posts: 84

Likes: 32

From: California

Has any one mention to try looking at the heater hoses. I had a chronic heating problem and did everything like mentioned above and no results till one day I took the heater hose off and the inside walls were flaking off to where it restricted flow.