Thermostat? There was a batch of Land Rover ones that were not opening all the way causing all kinds of weird issues.
Cooling System Headache
- Thread starter RoverX1325
- Start date
It held. I'm going to try a new thermostat and possibly try to bleed it again. I've got no fluid loss. No oodor. Nothing from the exhaust. Nothing. So it's stumping me.
Is there a possibility that the HG job screwed up the thermostat? Well, I mean there are all kinds of possibilities but is this likely or just a coincidence?
if your system held vacuum for at least 10 or 15 minutes AND you pressure tested the system with no leaks found you are getting air or combustion gas in the system.
You have air in the cooling system. That in itself is an apparent sign of a head gasket problem.
I realize air CAN be a sign of a headgasket issue but it could also be from air in the system from a stubborn bleed or the heater core. As far as any other signs it has none. Never lost heat. Plugs are dry. Nothing in oil. No odor from exhaust. No consumption of coolant. Did the dye test with nothing. Short of tearing it all apart I'm out of ideas.
These trucks are not that hard to bleed. But I think we need to really think about something you just said. No signs of overheat/ no loss of coolant/ no dye in the cylinders after a hot soak/nothing in the oil.... Just this noise from the heater core on accel. So with a truck that is over 10 yrs old and no other symptoms outside of the noise? What are you worried about?
I see your point there. With my job and being essential I've just got to make sure it won't leave me on the side of the road in the crap weather. I'd never drive another make awd or 4x4 after owning a Rover. No comparison.
The heater core gurgle with a Rover is almost always associated with the headgaskets as with my Trans Am any issue with the ignition is the optispark. That's probably where some of the issue comes from.
The heater core gurgle with a Rover is almost always associated with the headgaskets as with my Trans Am any issue with the ignition is the optispark. That's probably where some of the issue comes from.
What he said! Does the heater work? Does it blow hot air or cold when the temp is cranked all of the way up on head unit?
I'd just drive it. If a serious air bubble was trapped you would loose heat fast as this single bubble will stop the flow of water. Your engine temp would go up really fast. Sounds like that happened once but I bet it was a fluke from your first bleed.
Drive it
Drive it
As long as you have the little stream of coolant shooting down at a 45 deg. From the opening that used to be filled with cap. You have the air out of it. If you don't have that steady stream then it's got air in it . That's the hole that it bleeds itself thru when the cap is off
What I did and it worked for me when I had a discovery II was that I would reverse the heater core hoses to get the air pocket out. Also I would clean out the system by taking a hose and putting it through the heater core hoses and get what ever was in there out. Also with the radiator. I was always successful with it. Note I by passed the throttle body heater hose crap. Never had any issues with driving it like that in NY winters.
You have something clogging something up.
I remember at 175K it developed a head gasket coolant leak I put k-seal in it and it worked great never over heated or clogged anything up. sold it with about 220K.
I moved on to an LR3 4 years ago best reliable LR by far.
Dave
You have something clogging something up.
I remember at 175K it developed a head gasket coolant leak I put k-seal in it and it worked great never over heated or clogged anything up. sold it with about 220K.
I moved on to an LR3 4 years ago best reliable LR by far.
Dave
I had a stubborn air pocket last time but I cracked open the bleed screw a few times while the engine was running at operating temp. Unscrew it just enough so that water barely starts spraying out and holding a screwdriver on it so that it can not continue to back itself out too much and go flying. I would do this in intervals; about one minute closed to one minute cracked loose. I think the most important part is to go back and forth as you build up pressure with it closed and then shock the pockets loose when the pressure tries to escape. You had asked what burping was but I didn't see it mentioned or just overlooked it. Usually if there is an air pocket large enough to overheat the engine then you will have no heat in the cabin HVAC, only cold air blowing out when you turn the temp up. I also didn't see where you gave a definitive yes or no on this.
This is pretty redneck, but after replacing thermostats, hoses, etc. I parked mine with the front end up on an incline (not terribly steep) while refilling the coolant. Even made a little funnel out of paper, and filled into the bleed hole, as there seemed to always be air trapped in that region.
Burped it at least 2-3 more times and all has been well with mine....
Burped it at least 2-3 more times and all has been well with mine....