Engine temp. readings
Thread Starter
Le Mans Master
Joined: Feb 2006
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From: USA
Engine temp. readings
My temp. reading once warmed up reads 192 degrees. But today I noticed when it was idllying for a while in stop and go traffic that it got up to 252 and would not come down until I got moving on the freeway. That's a 60 degree diff. Is this normal for a C5? 
Race Director
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St. Jude Donor '03
252 is definitely not normal.
If you're exceeding 235, there's definitely a problem. In your case, I would first check the fan operation. Since it cools down rapidly once moving, it would seem you have adequate airlfow through the radiator.
If you're exceeding 235, there's definitely a problem. In your case, I would first check the fan operation. Since it cools down rapidly once moving, it would seem you have adequate airlfow through the radiator.
Advanced
Joined: Apr 2005
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Was going to mention check underneath near the radiator..
Cant even begin to tell you all the crap these cars collect along the way. Also check your fans with A/C on as well to make they are both coming on. Otherwise maybe a fan-relay gone bad ?
Team Owner
Joined: May 2005
Posts: 23,682
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From: Flagstaff Az.
heat
As the other members have suggested check for debris and also raise the hood with the engine running and air conditioning on. This automatically turns the fans on. The right fan is the easiest to see. If they are not working start down the check list with the fuse being the first item.
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That temp reading is too high. Mine has not exceeded the mid 220's when just idling.
Thread Starter
Le Mans Master
Joined: Feb 2006
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From: USA
Checked the radiator this morning and looked as clean as could possibly look. I drove her and it seemed as if the problem was fixed,but then it came back once I was in stop and go city traffic.
Is it possible the battery going bad could do this? I noticed a little corrosion when I popped the hood and also noticed that the battery (AC Delco) is now showing 13.6 when it used to always indicate 14.1
Is it possible the battery going bad could do this? I noticed a little corrosion when I popped the hood and also noticed that the battery (AC Delco) is now showing 13.6 when it used to always indicate 14.1
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St. Jude Donor '09
Originally Posted by captcruz
Checked the radiator this morning and looked as clean as could possibly look. I drove her and it seemed as if the problem was fixed,but then it came back once I was in stop and go city traffic.
Is it possible the battery going bad could do this? I noticed a little corrosion when I popped the hood and also noticed that the battery (AC Delco) is now showing 13.6 when it used to always indicate 14.1
Is it possible the battery going bad could do this? I noticed a little corrosion when I popped the hood and also noticed that the battery (AC Delco) is now showing 13.6 when it used to always indicate 14.1
If your fans and all are coming on even without turning on the A/c you might want to check the thermostat. It could be worn out causing the coolant to not stay in the radiator long enough to cool it off.
I haven't had this problem on my C5 but I've seen it on plenty of other vehicles.
Burning Brakes
Joined: Apr 2004
Posts: 857
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From: Olympia WA
I agree about the crap in the radiator mine was a mess, made a screen for it you might want to do that. When I turn the AC on only the right fan comes on. Is it supposed to be both, or is the left one for cooling only?
Last edited by binkysgarage; Mar 8, 2006 at 07:07 PM.
Thread Starter
Le Mans Master
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From: USA
I took her to the dealer since it has a 3 month warranty and I didn't see anything wrong with radiator debri or fans. He told me he could not duplicate the problem He did however replace the radiator cap. Says this could cause the problem. I'm going to get her and I'llk post again on what happens
He did however replace the radiator cap. Says this could cause the problem. I'm going to get her and I'llk post again on what happens
Thread Starter
Le Mans Master
Joined: Feb 2006
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From: USA
I got the car back and mechanic says he drove it and verified that it shows 193 degrees on freeway but gets up to 230 degrees idyling. He says this is acceptable level and fans are working. He replaced #1 fan relay and radiator cap as a precaution.
Anyone work at a Chevy dealer to verify that this is true? It never got this hot before...why now? And why a jump of almost 40 degrees?
Anyone work at a Chevy dealer to verify that this is true? It never got this hot before...why now? And why a jump of almost 40 degrees?
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St. Jude Donor '07-'08,-'13-'14, '16-'17
Clean out your radiator and drop in some watter wetter. It dropped my normal running temps by 20 degrees...
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Drifting
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From: I don't deserve this car, but I have arthritis and I don't deserve that either. Bay Point, FL
St. Jude Donor '06-'07
I had a similar problem tonight. Check this thread:
http://forums.corvetteforum.com/show...00&forum_id=48
http://forums.corvetteforum.com/show...00&forum_id=48
Safety Car
Joined: Jul 2001
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From: Ocean Springs MS
Originally Posted by captcruz
I got the car back and mechanic says he drove it and verified that it shows 193 degrees on freeway but gets up to 230 degrees idyling. He says this is acceptable level and fans are working. He replaced #1 fan relay and radiator cap as a precaution.
Anyone work at a Chevy dealer to verify that this is true? It never got this hot before...why now? And why a jump of almost 40 degrees?
Anyone work at a Chevy dealer to verify that this is true? It never got this hot before...why now? And why a jump of almost 40 degrees?
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Your car is a 98, I do not know how long you have owned the car... or if there were a few other owners.
The problem with cleaning the radiator is .... No one cleans the radiator, they think the radiator is up under the air deflector, and is visible from there... That is NOT the radiator... it is the A/C condenser coil...
Hidden behind this coil is the radiator, this is what helps to transfer heat from the coolant. IN order to clean the radiator you need to remove the upper fan shroud and vacuum, blow, wash clean this..
while the air has to flow through the condenser, to get to the radiator, both collect bugs, sand, dirt, fussies,etc... any time the fans are on they will try to suck debris from the vanes of the condenser, and they get stuck in the radiator coils.... I collect a half cup and dirt every spring, from these two components.
Bill aka ET
The problem with cleaning the radiator is .... No one cleans the radiator, they think the radiator is up under the air deflector, and is visible from there... That is NOT the radiator... it is the A/C condenser coil...
Hidden behind this coil is the radiator, this is what helps to transfer heat from the coolant. IN order to clean the radiator you need to remove the upper fan shroud and vacuum, blow, wash clean this..
while the air has to flow through the condenser, to get to the radiator, both collect bugs, sand, dirt, fussies,etc... any time the fans are on they will try to suck debris from the vanes of the condenser, and they get stuck in the radiator coils.... I collect a half cup and dirt every spring, from these two components.
Bill aka ET