Help Hot cat!
#1
Help Hot cat!
Hello Jaguar Fam,
I have a problem. I have a 2000 S type 4.0 v8 and I just replaced the head gaskets( yes I had the heads pressure check and milled and they are fine), new timing chains and tensioners, new water pump and thermostat, and new expansion tank. But my car is still running hot. If I let it warm up for about 15-20 min befor I drive it it won't run hot but if I hop right in it it runs hot. Any idea what my problem is?
I have a problem. I have a 2000 S type 4.0 v8 and I just replaced the head gaskets( yes I had the heads pressure check and milled and they are fine), new timing chains and tensioners, new water pump and thermostat, and new expansion tank. But my car is still running hot. If I let it warm up for about 15-20 min befor I drive it it won't run hot but if I hop right in it it runs hot. Any idea what my problem is?
Last edited by sgkingd; 01-15-2012 at 12:35 PM.
#2
#3
#5
#7
I'm still having problems with my s type running hot it will runn forever in the driveway but runs hot if you drive it it has new head gaskets the heads were pressure checked and milled, new water pump and thermostat ne exspansion tank new tank cap bled the system until a steady stream flowed from bleeder and yes the heater was on full blast. Could it b the water pump old one had meatal impeler new one had plastic?Can someone please help almost at wits end with this car!
Trending Topics
#8
The following users liked this post:
sgkingd (01-23-2012)
#10
#12
#13
i am not a mechanic but i remember something about the transmission being cooled by pipes that run through the radiator - im thinking if the car only runs hot when you drive it from cold but doesnt when you run it for 20 minutes at idle that maybe your transmission fluid is low ( it expands when heated doesnt it?) if the transmission fluid is low then the transmission might run hot until the fluid level rises which might result in a higher than normal running temp but not at idle when the transmission isnt under load.
i seem to remember that one of the members here found his thermostat had been put in upside down by his mechanic which might effect the running temperature.
there is always the possibility that your second replacement thermostat is also faulty.
if your vehicle has the electric handbrake could this be dragging slightly ?
just a few thoughts.
hope you sought things out soon.
i seem to remember that one of the members here found his thermostat had been put in upside down by his mechanic which might effect the running temperature.
there is always the possibility that your second replacement thermostat is also faulty.
if your vehicle has the electric handbrake could this be dragging slightly ?
just a few thoughts.
hope you sought things out soon.
The following users liked this post:
sgkingd (01-23-2012)
#14
#17
The following users liked this post:
sgkingd (01-23-2012)
#18
Some additional info. Afeter I replaced the headgaskets and timing chain and tensioner I bled the system and drove it about a hundred miles befor i had any problems. Another bit of info is that when it first tries to run hot it lurches but does not lose power then the needle starts to creep up but it will start to go back down. It wil go back to normal if I drve a ways but if I have to stop at a light or stop sigh I'm in trouble.
#19