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took out water pump ... it is PERFECT, like new, thermostat from Nissan... used , but opens in hot water, ... would engine headbolt re-tightening would help ?? id say for 1/4 spin?

wouldn't worry about chain rattle, when engine stops, just change an engine, half day work, been there, done it, just ignore rattles, maybe get thicker oil.

droped thermostat in to boiled water, it opens, i had used spare one, doing same ... will try short the 2 wire sensor, .... just wondering, what to do, if fan not kicks in when shorten those two wires. ?

yes, i thought about this, as engine havent been driven for a year or so ... i just fitted it in to my micra, .... but it is quiet a lot of that mayo on cap, i even may see it inside on shafts ... grrr.... i suppose, there compression leak , and it creates bubble in to coolant system, over...

so , i took off relay, and connected fan dirrectly, made it work all time, car overheats anyway. white mayo oil came up on oil cap... on dipstic still no sign of mayo .... anyway... conclusion ... headgasket gone ???? so does the head needs to be skimmed before put new geadgasket ?

yes, fan works , when connecting straight to batery, fuse from front side, looks fine, dont know about relay ... i have spare one, shall i swap ? also i have nissan scanning software, would be benefit to use it?

ok, if fan is somehow faulty ... dont know where, so it shall overheat.... i have another ecu, shall i plug that one, and see if fan kicks in ?

just need to be clear.... , that should be normal for car overheat, if it stay on one place, no move, and rad fan not working. would somebody agree with me about this ?

dont know, will check ... do i have to skim head ? or it shall be ok without , just put proper silicon and new headgasket ? I have very limited time to do this.

So folks, decided create separate thread my micra overheating issue. Would you help me troubleshoot problem. So far discovered, two pin sensor and thermostat working. when temperature reaches over half, small bubbles coming out in open radiator. ... and creates kind of little foam ... very...

Checked that sensor, sensor works perfect, so what else have to look, to make that fan working, when engine is hot ?

would somebody drop link to that blog ? what frank mentioned ? i couldnt find. PLEASE.

Nice R32 you have there :)

cant find that blog, tried use search by users, wouldnt find, Frank, would you find and drop link, really need to have look on it.

I think it could, cos i think it is blocked, were connected pipes while engine running, coolant not running through, and bottom pipe from heater matrix feeds water pump (nothing goes out, while engine running), my radiator wasnt hot, when temp reaches red line, when disconnected pipes from...

is any valve up there ??? i was attaching pipe , and tried blow air through .. .no luck... were trying both heater matrix pipes.. air not passes through .... recon - main problem of overheating... would you drop me a link here, i dont know how to find polly p blog ... :(

Hi folks, i have heater matrix blocked somehow , any idea how to clean it without removing ? If its impossible. any guide how to remove it ? thanks

Frank, you are the best, thnks :)

Thanks, wery useful diagram. cheers.

Done it in first, it works fine, opens in hot, and closes in cold water., discovered blocked heating matrix, so i connect pipes dirrectly, skip heating matrix. radiator getting water now, but fan not kicks in when temp rises to red..... will try get new ecu coolant sensor. does somebody know...