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Urgent: Recent HG change but still losing coolant and runs cold constantly?

529 Views 6 Replies 3 Participants Last post by  G-Dub

Hi everyone, really hoping someone can help me on this.

Ok, before my head gasket blew due to running on not enough coolant (i think), the car would always run bang on 90, even when it overheated and spilt all of its coolant, (when i realised it blew) it still was on 90. but before it blew it would warn me the coolant level was overheating (and now realise it meant it was low) even when i had just turned it on.

since i got a recon cylinder head and new head gasket and system flushed and new antifreeze, it has been running cold. (i didnt replace camblet or tensioners because these had very recently been replaced, and the water pump was inspected for leaking when i had it changed and aparently that was fine too.) I drove from Nottingham down to London that night and it sat on the temperature that it would be on when you have just turned the car on. Thinking this was impossible, i checked at a petrol station and the expansion bottle and engine block were cool to touch despite hours of motorway driving. But not having a working heater and a car that ran cool wasnt the end of the world for me so just drove it anyway as it ran nicely and no red cooling light was flashing or beeping at me.

but last night i let my car tick over as when idling in a still position the car would actually get up to 90 and the heaters would get warm. the cooling fan didnt kick in, and i got the low coolant level warning flashing light and beeping. i let the car cool down and drove home about an hour and a half later and after a while it warned me again. today i filled it up with water to find the oil filler cap with no mayo and dipstick with no mayo, but there was a layer of it on top of my coolant. But underneath was clean red coolant so this didnt alarm me. Just took it out for a spin, and it lost coolant and i got the warning light and beeping again; and the dipstick is ok but the oil filler cap now has a tiny layer of mayo.

What is happenning? My car is running cold, (unless idling but then i got the warning light and beepiing after a while), my heaters dont work (again unless idling) and since i let it idle to long its now loosing water quite quickly??

i have a warranty on my recon cylinder head and hg so should i take it back? The only problem is that garage is in Nottingham and im in Essex.

Its been about a month surely it cant be my HG again? (i really hope not.)

Any help on this will be greatly appreciated because im just getting so stressed with this.

Many thanks, the_panzer

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What engine is it?

First problem sounds like the thermostat is either not fitted or is stuck open.
1.6 16v x reg, yeah it sounds like the thermostat is jammed open, but it sat bang on 90 before the cylinder head and HG change and the heater still didnt work. and now stays cool, and the thing that is worrying most is it only started loosing water since last night when i let idle and the cooling fan didnt cut in.

cheers for quick reply
UPDATE: i had the bonnett up this morn because wanted to have a look. The coolant level warning flashed and beeped at me again, so filled it up with a hose. And was pleased to see that under the brown oily stuff in my expansion bottle was clean red coolant. But even when the bottle was full, the light still flashed and beeped. I then noticed that when the car is running, red coolant drips off my bumper. I also noticed that one of the pipes goin in to my heating matrix was warm and one not that warm. On squeezing the pipe that didnt get warm, i can hear a squelching sound near my radiator.

any more ideas?
Coolant leak near the bumper is usually a sign of a leaking radiator. Start there, usually near the bottom on the drivers side as I recall.
Well the radweld seems to be holding atm, but gonna get a new rad to be safe. What should iu do about the stat? shall i lieave unfitted/jammed open or get it fixed? cos if its open the car cant overheat can it? but then again is itbad for the car to run cold esp on motorways?
get the thermostat replaced, the engine wont get up to temp which will give you crap mpg, if you had oil in the water it may have got into the stat.
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