Overheating '69 -Thermostat?
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Joined: Apr 2001
Posts: 53
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From: Wellington,New Zealand
Overheating '69 -Thermostat?
Hi guys -this may be an easy fix-I'm hoping ,but yesterday I took my '69 big block roadstr out for a very quick run and only got a mile down th raod and the temp gauge continued to rise right up to near the red zone before I pulled over and swtiched her off.
Never done that before.
left it a few minutes checked the surge tank cap 9part opened to see how much pressure was there,then got back in and started her again.This time the temp settled at normal range for this car at about 200 degrees.
Drove to a service station to put some gas in then when \i stared it again it did the same thing-temp rose again.Gave it a braek(still at service station) and when stared again temp was ok.Started her at home again tonight and same thing happened.
I've ordered a new thermostat -would this b the most liekly cause -a sticking thermostat or what other posibilities could there be?
Have a club run this weekend so want to get her sorted.
The car does run a bit hot normally at about 200-210 degrees.
Appreciate your advice.
Chris
Never done that before.
left it a few minutes checked the surge tank cap 9part opened to see how much pressure was there,then got back in and started her again.This time the temp settled at normal range for this car at about 200 degrees.
Drove to a service station to put some gas in then when \i stared it again it did the same thing-temp rose again.Gave it a braek(still at service station) and when stared again temp was ok.Started her at home again tonight and same thing happened.
I've ordered a new thermostat -would this b the most liekly cause -a sticking thermostat or what other posibilities could there be?
Have a club run this weekend so want to get her sorted.
The car does run a bit hot normally at about 200-210 degrees.
Appreciate your advice.
Chris
Racer
Joined: Dec 2004
Posts: 379
Likes: 0
From: Fairfield Texas
Sure sounds like the T-stat is not opening at its designed temp.
I guess it could possibly be bottom rad hose collapsing a little or
temp. sending unit not working correctly but My money would be on
T-stat.
I guess it could possibly be bottom rad hose collapsing a little or
temp. sending unit not working correctly but My money would be on
T-stat.
Instructor
Joined: Jun 2005
Posts: 248
Likes: 1
From: Apopka Florida
I'm sure you checked this but how about the radiator fluid? My guess would be the t-stat also. Good luck seems like something simple. Matt Also you might want to change to a 190 t-stat to see if that helps
Last edited by 73'454folendore; Mar 27, 2006 at 04:44 PM. Reason: addition
