Aroper2003

1 minute ago, madasahatter said:

And if the stats stuck open water will not get to the right temperture.

I agree, but the water is getting up to the right temperature, as the temp gauge is in the right place and it certainly will be hot after being running for an hour.

1 minute ago, madasahatter said:

 

15 minutes ago, Shahpor said:

I don't think it is the thermostat personally.  If it was stuck closed, the engine temperature would be affected.

That, along with the fact you have just drained the system, suggest to me that it is an airlock in the matrix.

If you squeeze the radiator hoses, does the fluid level go down?

I agree, the water is getting pumped around the engine system and I presume coming through the thermostat to heat the infeed to the heater matrix, it's just not coming back out ( unless I've got the system of water flow wrong)

If I squeeze the hose the water goes up and down with the pressure as I'd expect. 

The heating was working until the trouble started with how it was running.

No, I haven't had the stereo out. 

If you do hear or see anything about the heaters not working in the mean time I would be grateful.

Thank for the help so far.

8 minutes ago, madasahatter said:

http://www.ebay.co.uk/itm/2006-LEXUS-IS220D-IS-220-D-MK2-4DR-SALOON-THREE-HEATER-FLAP-MOTOR-063800-0171-/401103331373?fits=Car+Make%3ALexus&hash=item5d639f202d:g:IAIAAOSwJQdXCN1D

What exactly do these do anybody know.

Looks like this is what drives the direction of the air to the vents, and whether it's hold and cold. I shall investigate this part as well as reading it appears it's visible when they're not working correctly.

Cheers

Temp gauge is just below half, all pipes are got except the out feed from the bulk head, and air coming out of the centre inside are all cold even with heaters set at full and hi, and tried in all variations with no difference in temp.

Hi ,yes I've had it running for about 60 minutes now and took it for a drive up the dual carriageway , so far so good, just the heaters to sort hopefully now.

Ok, so I've drained the system down and flushed it through and presently it's sat on the drive ticking over sweetly again.

Fingers crossed that's all it needed.

The heaters however are still not working, at the bulkhead the in feed is hot however the out feed isn't. I've tried searching on the forum and net for answer but haven't been able to find any specific to this car.

I've bled the air from the radiator so know it's not that and the coolant level is good.

Any ideas please people?

Cheers I'll give it a go and see what happens, do you have any advice on the best way to drain these systems please?

I haven't yet. Do you think it would be worth doing?

Privately, otherwise it would of been straight back to the dealer

It doesn't appear to be loosing coolant, guess I'm going to have to bite the bullet and put it in the garage.

thanks for your help.

A quick update, my block tester arrived today.so I've started the car up and got it warm , I've carried out the test for a couple of minutes with no change in the colour of the fluid. There was foam in the header tank and so I've cleared that in case it's effecting the test (wasn't there at the start) Again carry out the test and nothing , no change. I ve then put a weight on the throttle pedal to bring the revs up to 2000 and carry out the test again, still no change in the blue fluid. The engine note did change in the middle of the last test as if it was struggling again but then it cleared and picked up again.

im hoping this means that the headgasket hasn't gone and I can start looking at other issues? 

Water was clearlypumping into the header, so rules out water pump I think , when I disconnected the bottom hose from the reservoir this seemed to be empty or nothing coming up it when the engine was running.

Anybody got any more ideas or suggestions please?

kind regards

adrian roper

Cheers,

I'll give that a go, I'll keep you updated.

Regards

Adrian

Cheers,

I'll give that a go, I'll keep you updated.

Regards

Adrian

I've just text a mate to ask if he has a head gasket test kit try before i spend any more on it, (new Battery, new rear shocks, headlight bulbs in the past 3 weeks)  

Has to be the most comfortable and quiet place to be though when it's working.

Luckily it's not my only mode of transport.

How do you prime these, I can't see the usual primer bulb?

Cheers

Adrian

Thanks for the replies and the links.

the thing with the misfire is I'm wondering if perhaps a sensor isn't picking up the correct temperature and therefor messing up the fueling or the thermostat isn't opening and the same is happening. I had a car previously ( although it escapes me ) where it wasn't getting the correct reading and ran like a bag of bolts, I'm wondering if this may also be the case as until it warms up it runs perfectly. 

Hi

I've always wanted a Lexus, ever since sitting in an is200 demo car at a motor show years back, just styled so nice inside, so I recently took the plunge. i just wish I had found this site before buying my is220.

anyway, I've done about 200 miles in it and all was well, I got up the other morning to take the Mrs to work and the fuel gauge was reading it had 30 miles range left to go and it started to feel like it was misfiring / fuel starvation after about 2 miles. So I got to a fuel station about 10 miles away hoping this would sort the issue. Unfortunately it didn't and it sounded like is was missing all the way home. Later I've looked under the bonnet to see that it's overflow had lost some fluid and the header was like a pink bubble bath but still at its correct level. The temp gauge hadn't gone above halfway.

thinking back the previous day I had checked all the fluids, when I tried to take the expansion tank cap off , it was difficult and tight, when I  finally was able to remove it it seemed to have a sealant around it just above the black o-ring seal.

i've not used the car for a few days and so had disconnected the Battery as I'd had the drivers seat repaired, so I thought I'd try it again this morning just in case it was something electrical and it reset it self. After about 2 miles I thought all was going well and it was running lovely, showing 42 mpg but unfortunately I spoke to soon, about 2 minutes later down the road again it starts to feel like it's missing with economy dropping to 30, again it's showing no temperature issues but I noticed that there is no hot air coming from the heaters.

now having read through the forum it appears that it very well could be the head gasket, but I was wondering if it could possibly be something else. I've had headgaskets go on cars before but never so rapidly. I was wondering if perhaps the thermostat, water pump or a sensor isn't working correctly? Or am I in denial 🤔 

Theres no milky residue on the cap or in the oil, and it's not smoking at all and with no lights on the dash.

Anyhelp would be greatfully received, if it is the headgasket is it a job that can be done myself, I'm fairly handy with a set of spanners.

kind regards

adrian