help!!
Thread Starter
Heel & Toe
Joined: Jul 2006
Posts: 16
Likes: 0
mk,need help
i took my 84 vette to get diagnosed for possible overheating. the mechanics said i needed a new raditor and was the cause for it to boil over because my radiator was blocked,so i replaced it with a new radiator..and it wasnt boilin over any more but it feels like its still overheating cause the upper hose would get real hot and full of presssure and my check engine light comes onafter driving for just 5 mins.and also my exhaust coming from the engine would get red hot ..im lost helpp!!!!
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
LAst time I had an exhaust get red hot, it was a blocked cat.
Drifting
Joined: Mar 2006
Posts: 1,979
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I'm not sure what your problem is but I had the exhaust get red hot just behind the pre-cats and I had fuel injector problems.
I'm no mechanic but I think what was happening in my instance was the injectors were just dumping fuel into the motor and what was not being burned was coming out the exhaust and being heated up thru the pre-cat. I had alot of black soot on the tips of the exhaust too.
Good luck I hope you can sort it out.
Gary
Same thread under a different title....Huh
I'm no mechanic but I think what was happening in my instance was the injectors were just dumping fuel into the motor and what was not being burned was coming out the exhaust and being heated up thru the pre-cat. I had alot of black soot on the tips of the exhaust too.
Good luck I hope you can sort it out.
Gary
Same thread under a different title....Huh
Last edited by flyinlow90; Aug 1, 2006 at 02:56 PM.
Thread Starter
Heel & Toe
Joined: Jul 2006
Posts: 16
Likes: 0
help!!
i took my 84 vette to get diagnosed for possible overheating. the mechanics said i needed a new raditor and was the cause for it to boil over because my radiator was blocked,so i replaced it with a new radiator..and it wasnt boilin over any more but it feels like its still overheating cause the upper hose would get real hot and full of presssure and my check engine light comes onafter driving for just 5 mins.and also my exhaust coming from the engine would get red hot ..im lost helpp!!!!i took out thermostat how do i know if coolant is moving thru the system? how do i know if water pump is workin?
Race Director
Joined: Sep 2004
Posts: 13,793
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From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
Well first off... WTF are you trying to say? I thought I talked in circles 
Second... do you have a working temp guage and what does it read? Third, your best bet is to touch base with CFI-EFI as he is a wiz with the 84!
Second... do you have a working temp guage and what does it read? Third, your best bet is to touch base with CFI-EFI as he is a wiz with the 84!
Team Owner
Joined: Oct 2004
Posts: 20,178
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From: middle of nowhere Pa
Cruise-In VI Veteran
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St. Jude Donor '06
if your check engine light is coming on the first thing you need to do is find out why. get the code(s) and they should tell you what is going on.
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Upper radiator hose is the return hose. It should get hot when the t/stat opens and hot coolant is being pumped from the motor back to the radiator. Put your t/stat back in, running with no stat is no-no. As for the other issues, just what the other members already said.
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Le Mans Master
Joined: Mar 2001
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
Also have your catalytic converters checked for proper operation. When thy go bad they can cause overheating.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
The upper radiator hose is suppost to get hot. The SES light means you have a code in the ECM. Don't remove the t-stat. I don't know if aminnich was stating a LT1 (reverse coolant flow) or a L82. What temps does it run on the highway and in traffic or idle? Pull the code and post it so we can help.
Pro
Joined: Sep 2005
Posts: 747
Likes: 0
From: Calgary '85 Z51 coupe
Originally Posted by CMYC4GO
Put that T-stat back in! Without it, your water circulates too fast, and doesn't have a chance to cool off.
That's what my car was set up like when I got it--not thermostat, fan wired to stay on all the time. The problem was that the rad was so caked with junk it wouldn't cool.