overheating??? HELP!!!

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Jun 28, 2008 | 02:20 PM

sunbbang1

Thread Starter

Cruising

Joined: Feb 2007

Posts: 12

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From: Texas

overheating??? HELP!!!

I am having a very frustrating overheating problem but only at freeway speeds. I guess starting around over 55-65mph. 2001 convertible 6speed, has 100 shots nitrous but w/o spray and it was normal driving on freeway but the car immediately heats up straight to 240 degrees(but not more then that while i drive about 15 mile stright on freeway) when going over 60-80mph and get back to traffic light it gets cool down to around 200 drgrees. 200 looks normal to me but over 60mph, 2 miles after it goes to 230-240 degrees again. After dyno tune guy change my fan contol I usually see 170-200 degrees traffic or freeway even after spray it. . It happen 3days stright up. PLEASE HELP me out.

Thanks.

Jun 28, 2008 | 02:30 PM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,036

Likes: 9,798

From: Charlotte, NC (formerly Endicott, NY)

Is your fan on while driving on the highway? It is supposed to cut out at speeds above 35mph to keep the fan blades from blocking air flow. Also check your A/C condensor and see if it is blocked by debris picked up from the highway.

Bill

Jun 28, 2008 | 03:28 PM

sunbbang1

Thread Starter

Cruising

Joined: Feb 2007

Posts: 12

Likes: 0

From: Texas

I'm not sure fans on or not on high speed. Is there any other chance I can notice it instead of sound? I'm not a really tech guy. But the derbis I clean up month ago and I check from the bottom yesterday, it was clean.

Jun 28, 2008 | 09:32 PM

theadmiral94

Drifting

Joined: Sep 2003

Posts: 1,363

Likes: 7

From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ

what is the condition of the front spoiler (air dam)?

If it has been removed or worn down, it could fail to direct enough air up and into/through the AC Condensor to the radiator.

Jun 28, 2008 | 09:39 PM

at88mph

Team Owner

Joined: Dec 2001

Posts: 21,766

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From: The artist formally known as NONO5.0 Mobile, Al

Quote:

Originally Posted by Bill Dearborn

Also check your A/C condensor and see if it is blocked by debris picked up from the highway.

Bill

I had the same issue and came to find out somehow a bag got sucked up in there blocking the airflow

Jun 29, 2008 | 03:25 PM

sunbbang1

Thread Starter

Cruising

Joined: Feb 2007

Posts: 12

Likes: 0

From: Texas

I moved front air dam about year ago but never had a problm like this before. Today I check the ac condensor and radiator agian, theres no derbi or bag.

Jun 29, 2008 | 06:26 PM

stormrider

Melting Slicks

Joined: Feb 2006

Posts: 3,400

Likes: 3

From: Sarasota Florida

If you removed your front air dams you need to reinstall them. Not only do they drive air into the radiator, they are also important for the cars handling.

Jun 30, 2008 | 02:35 AM

Double G

Pro

Joined: Sep 2007

Posts: 547

Likes: 2

From: Clinton Twp. Michigan

Usually Overlooked?

If you have swapped your lower hose and it didn't have a wire coil in it, it will suck itself flat at higher rpm. But not during stop and go driving. Squeeze it or hold the rpm's at about 3000 when the engine is warm and the stat is fully open. Just another idea worth 2 cents.

Last edited by Double G; Jul 2, 2008 at 05:57 PM. Reason: spelling