C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

82 running hot, stalling

Thread Tools
 
Search this Thread
 
Old Sep 20, 2009 | 09:17 PM
  #1  
C3 1982 Joey's Avatar
C3 1982 Joey
Thread Starter
Navigator
 
Joined: Nov 2008
Posts: 9
Likes: 0
From: Pensacola FL
Default 82 running hot, stalling

Got my 82 trans rebuild back (had dropped 3 n 4, go figure!) and I replaced the fuel pump with an 85 year to correct rough idle. Seemed to start up and idle great. I hooked it up to WINaldl and there are no error codes so the owner and I took it out for a long drive today here in hot as heck Pensacola. Car is stock. No throttle body linkage play, the manifold bolts are tight. She is really an un-molested car with the exception of the previous owner re-routed/disconnected the heater. So, we drive and drive, no issues but it sure took a long time for the guages to get to what I'd consider normal. The oil temp stayed on or just above 100 for a long time and the water temp did not get above 200 ever. Gas guage? Ha! After about 50 min of driving we stopped to get something to eat. Got back in and the car would turn over, crank, and go but we were in a large parking lot with lots of others so it was stop and go at idle and we would die. I could crank right back up in neutral, get us going, then she'd die again as we were not moving fast. Once we got out on the street she ran fine but with 1 sec power pauses every 45 seconds or so at 45 mph. I am worried about poor cooling. The aux fan spins by hand and I don't know if it ever came on or not. And the engine bay is hot, hot, hot! PLenty of fluid in the res. Oil just changed and stinks but not burned smell. Still no WINaldl codes tripped. Un hooked CTS sensor and car would not start and got a trip there so I'm thinking that is good. This car seems to run fine when the ambient temperature is <80 but like poop when it is hot. I THINK: the old stock guage is reading low faulty and the thermostat is not opening (all the way). As to the stalling and power pauses?
Reply
Old Sep 21, 2009 | 10:10 AM
  #2  
jdp6000's Avatar
jdp6000
Melting Slicks
10 Year Member
 
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Default

Sounds to me that you have a perfect running car in 80 degree temp. My oil temp eventually catches up to my coolant temp. It rarely gets that hot up here so I have never experienced what you are.

I do don`t think a guage error would cause your stalling or miss.


I think you may have a carbon build up in the intake preventing a good flow of fuel. It may be evaporation due to the heat before it reaches the cylinders, I would try using a decarbonizer. You may also want to try a can of Seafoam in the tank. I have found my car ran much smoother afterwards. You can also pour some Seafoam down each TB.

Jim
Reply
Old Sep 21, 2009 | 06:22 PM
  #3  
C3 1982 Joey's Avatar
C3 1982 Joey
Thread Starter
Navigator
 
Joined: Nov 2008
Posts: 9
Likes: 0
From: Pensacola FL
Default 82 pauses

Seafoam? What the heck is seafoam? Temps around here are usually 90deg. f plus. Again, I think the engine is running hot, but the old stock temp guage is not reading / indicating hot. The stalling only happens whn the engine is hot and revs are low. The power pauses happened for the first time on Sunday. Crusing along at 45- it is as though the car-swallows. You know-hmmmmmmmmmmmmmm, pause,hummmmmmmmm. Maybe I should call Click and Clack with that one!
Were these just hot cars? Did they perform poorly in hot weather? Would it work better with a lower degree thremostat?
I am planning on replacing the stock rad. with an alum. one.
How can I tell if the elect. aux fan is working?
Thanks.
Reply
Old Sep 21, 2009 | 06:46 PM
  #4  
jdp6000's Avatar
jdp6000
Melting Slicks
10 Year Member
 
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Default

Originally Posted by C3 1982 Joey
Seafoam? What the heck is seafoam? Temps around here are usually 90deg. f plus. Again, I think the engine is running hot, but the old stock temp guage is not reading / indicating hot. The stalling only happens whn the engine is hot and revs are low. The power pauses happened for the first time on Sunday. Crusing along at 45- it is as though the car-swallows. You know-hmmmmmmmmmmmmmm, pause,hummmmmmmmm. Maybe I should call Click and Clack with that one!
Were these just hot cars? Did they perform poorly in hot weather? Would it work better with a lower degree thremostat?
I am planning on replacing the stock rad. with an alum. one.
How can I tell if the elect. aux fan is working?
Thanks.
Most car part places will sell seafoam. Its a decarbonizer, an engine cleaner additive. Its in a can. Instructions are on the back.

The fan will not go on unless you pass I think its 230 degrees.

Jim
Reply
Old Sep 21, 2009 | 07:09 PM
  #5  
terry82's Avatar
terry82
Le Mans Master
25 Year Member
 
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
Default

best price for seafoam is at menards .to check your fan it is connected at the back of you passenger engine head it needs to be grounded .i would check for vac leaks and if the iac are sealing good .i just cleaned mine beacause of bad idle .http://www.crossfire.homeip.net/index.php?act=idxtry this forum.
Reply
Old Sep 22, 2009 | 07:26 PM
  #6  
C3 1982 Joey's Avatar
C3 1982 Joey
Thread Starter
Navigator
 
Joined: Nov 2008
Posts: 9
Likes: 0
From: Pensacola FL
Default Not an idle problem

Okay, after pondering it is not an idle problem. It is a stalling problem. Heat may be a factor. Fuel, good flow. Good pressure at 15. New 85 fuel pump, new filter. Air...not so sure about. read somewhere that it is a good idea to disconnect the solenoid that controls the fresh air/high load intake from the front-thus giving good air all the time especially in a hot humid climate like Florida. Anyone done this or know how to do it?
Reply
Old Sep 22, 2009 | 10:04 PM
  #7  
terry82's Avatar
terry82
Le Mans Master
25 Year Member
 
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
Default

how are you checking your fuel pressure ?with the 85 fuel pump it should be reading higher than that [after being regulated down it should be 12-15]i do not think air is your problem.the flap on the hood opens at full throttle .yes you can disconnect it and wire it open all the time . have you checked the spray of the injecters.i would check the tps switch ,to see if it is okay .
Reply

Get notified of new replies

To 82 running hot, stalling





All times are GMT -4. The time now is 04:44 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE