Hi,

 

Today everything went wrong and all started like this:

 

While I was driving the temperature went above 110 and first i Thought it is thermostat, but i was confused when I saw that the cooler rotates.

 

Nevertheless I bought new thermostat (upon closer inspection the old thermostat as well as its case were ok) and whil I was mounting it the thread on the engine housing broke up. So here is my first question: Can I repair the thread or do I have to buy a new engine housing for the thermostat?

 

Second, I noticed cooler leaking under the carter and I suspected it can be water pump, but I changed new water pump with belt 1 year ago. And there is a squeaking noise near the water pump. Any ideas on this? Do I hafve to buy a new water pump or does the old one has guarantee?

 

Thank you in advance!

 

 

1) show us a photo to understand what is broken.

 

2) wrap some tissue paper in all places you suspect there is a leak.

fix it with scotch tape.

drive a while and check for any moisture.

if nothing found, it is water from the road.

real leaks usually drain the coolant from the expansion tank.

things that squeak around water pump: the belt and/or the bearing of the water pump.

start by spraying some water on belt while the engine is idling.

if the squeak is gone, check belt tension or belt itself for wear/contamination.

the guarantee part is 100% your problem.

you know better than us what part you bought, where from, who installed the pump, etc.

1) I will post the picture tomorrow.

2) the expansion tank was empty

 

The water pump i Airtex, a division of ASC Industries. I Bought it in Croatia at the autopart store, and local mechanic with my help installed it during the regular belt replacement. We did it in my garage.

 

I will post more information when i disassemble all parts.

Hello again,

 

I changed water pump, belt and belz tensioner yasterday as well as thermostat.

 

Engine thermostat housing is a part on the engine where all hoses are connected and where you put a thermnostat in it. The screw thread broke there and it was plastic thread. I fixed that part by putting larger screw in it.

 

Now I have other problem regarding engine. I marked phases prior to dissassembly but the engine is not in phase. I moved the belt for one teeth back and forth but without success. I put the clip into upper dead point again no success, I even rotated the phase in the gearboy but nothing.

 

Please help me!

The problem with the engine was intake pressure sensore which broke off while I was lowering the engine. I replaced it and now it is ok.

 

But the engine temperature is what confuses me. I replaced new thermostat 87 degrees, but the fan kicks in on 100 degrees adn the engine wokrs all the time on 100 degrees. BNefore it worked on 90 degrees.

 

What could be the problem?

think twice what you disturbed in the process.

you should know better than us what you did wrong.

it looks like you solve one problem just to create a new one.

exactly like you did when you broke the MAP sensor.

I thought and checked everything already and everything seems to be fine.

The problem started with the engine temperature at 100 degrees and leaking of the waterpump

 

I changed water pump, thermostat and coolant but the engine temeprature still reaches 100 degrees and in that moment thermostat kicks in.

 

I am out of ideas.

did you flush thoroughly the cooling system after taking out old thermostat and before putting in the new pump?

did you clean thoroughly the radiator fins?

thermostat may be sticking and doesn't open gradually.

worst case scenario: bad head gasket.

I did everything you mentioned, flushed 3 times, cleaned fan fins and still nothing. I too am afraid of the head gasket.

 

although I noticed something different than before: the lower radiator hose isn't heating equally like the upper hose. The upper hose is hot and the lower hose starts to heat at about 100 degrees?

the lower radiator hose isn't heating equally like the upper hose.

bottom line: if you are 100% sure you did everything right, then the cooling system can't do its job properly because:

- there is an extraneous load on the engine or engine lubrication is poor

- heat from combustion chamber found a passage to coolant (small crack in the engine block, bad head gasket, worn piston rings)