351 cj running hot
#1
Cannot stop 1972 351cj from running hot. Please advise!
Reply
#2
Turn it off  Wink
Reply
#3
You've probably got the wrong thermostat. Cleveland engines run different thermostats then the Windsor based engines. Go to the search bar and type in Cleveland Thermostat and you should find several articles on the subject. Hope it helps.

JTS
Reply
#4
(05-24-2022, 03:29 AM)JTS71 Mach1 Wrote: You've probably got the wrong thermostat. Cleveland engines run different thermostats then the Windsor based engines. Go to the search bar and type in Cleveland Thermostat and you should find several articles on the subject. Hope it helps.

JTS
I've already been down that road and paid like $50 for the special restrictor plate and tstat with no change. I went with a 4 core, aluminum radiator with electric fans and no change. As long as I'm moving it stays nice and cool, but as soon as I come to a stop it starts creeping up and up. Got up to 215 degrees in the inspection lane and had to shut it down. It seams to be getting a little worse and worse each trip.
Reply
#5
Ok Lets look at the common issues. Any coolant loss? Coolant in the oil? Or oil in the coolant? A gas analysis of the coolant will tell you if it's got exhaust gasses, in the coolant. Excessive pressure in the Radiator? Hook a pressure tester to the radiator, and run the engine to temp, watch the gauge. it shouldn't get above 15 or 16 lbs. If it goes much higher you have a internal leak of some sort, cracked head, blown head gasket, could even be a thin cylinder if the block has been bored several times. Not very likely, but it has happened. I've also seen a cracked block cause a similar issue. These are a few Ideas, but by far are not the only causes. Give us a little more history on the engine, and what's been done to it, and maybe we can hone in on the problem. Hope It helps. Keep us posted. 

JTS
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Engine Won't Stop Running mason1958 8 21,460 06-16-2012, 10:07 AM
Last Post: 1969jimmach

Forum Jump:


Users browsing this thread: 1 Guest(s)
[-]
Latest Threads
Happy Fathers Day!!!
Last Post: JTS71 Mach1
06-20-2022 02:34 AM
» Replies: 0
» Views: 162
1969 Raven Black 390 Looking For
Last Post: mason1958
06-11-2022 09:48 AM
» Replies: 10
» Views: 11508
WELCOME ALL NEW MEMBERS INTRODUCE YOURSE...
Last Post: JTS71 Mach1
06-09-2022 09:46 AM
» Replies: 79
» Views: 134651
Looking For
Last Post: mason1958
06-03-2022 09:42 AM
» Replies: 0
» Views: 302
351 cj running hot
Last Post: JTS71 Mach1
05-30-2022 07:12 AM
» Replies: 4
» Views: 492
Major Winter projects
Last Post: JackWagon3
05-18-2022 08:59 PM
» Replies: 47
» Views: 9894
New
Last Post: Rare Pony
05-18-2022 01:54 PM
» Replies: 2
» Views: 399
Help/advice needed!!
Last Post: JTS71 Mach1
05-03-2022 03:42 AM
» Replies: 7
» Views: 1120
Base suspension alignment/setup
Last Post: JTS71 Mach1
04-27-2022 11:49 AM
» Replies: 1
» Views: 518
Dash ignition light?
Last Post: JTS71 Mach1
04-11-2022 12:46 AM
» Replies: 5
» Views: 8811
Biden had to go to Hospital
Last Post: JTS71 Mach1
04-09-2022 02:02 AM
» Replies: 0
» Views: 1183
That new/old Jeep smell
Last Post: JTS71 Mach1
04-02-2022 08:28 PM
» Replies: 34
» Views: 14662
Brake Lines - Distribution Block
Last Post: JTS71 Mach1
03-28-2022 10:49 AM
» Replies: 7
» Views: 2390
"Jacobra"
Last Post: JTS71 Mach1
03-28-2022 09:25 AM
» Replies: 83
» Views: 131337
Marriage
Last Post: JTS71 Mach1
03-27-2022 08:11 AM
» Replies: 0
» Views: 770
Newbie
Last Post: JTS71 Mach1
03-22-2022 12:47 PM
» Replies: 1
» Views: 686
Rear Spoiler Pitch/angle
Last Post: carguy47
03-22-2022 10:25 AM
» Replies: 4
» Views: 10605
Center console install
Last Post: carguy47
03-22-2022 10:22 AM
» Replies: 2
» Views: 1324
Parts, parts, parts
Last Post: carguy47
03-22-2022 10:14 AM
» Replies: 0
» Views: 801
Washer Hose Routing
Last Post: JTS71 Mach1
03-15-2022 06:34 AM
» Replies: 4
» Views: 1152

>