Question about 2008 Volvo C30
Do the air purge test below.
The fins/turbine on water pump can be totally worn out.
When the car is completely cool,check the electric fan(s) for smooth rotation.
Clean/check/change the thermo sensor,contact and wire.
Excavate air pocket in coolant system / check for head gasket leak
This test will kill two birds with one stone.
MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!
RAN THIS TEST IN A WELL VENTILATED AREA ONLY!
You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!
Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .
Top of the coolant reserve tank
Let it ran for 10-15 minutes.
Monitor for air pockets escaping from coolant reserve tank.
Small amount of bubbles is OK at 1-5 minute mark
After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.
If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.
Give the thermostat host few gentle taps.
If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.
Let engine cold down and top off coolant reserve tank.
Start monitor for coolant lost
A coolant flush is require every 2 years or 24,000 miles.
I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.
Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.
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Posted on Dec 05, 2009
It looks easy for the 940 but I am not sure about the 940 turbo, as maybe some of the turbo parts are in the way. I'm not sure about that, since there is no documentation on the turbo model vs. the 940 standard model.
If you can follow the following instructions, then I would give it a whirl.
REMOVAL & INSTALLATION - 1993 Volvo 940
Fig. 2: . . . and remove the starter cables
Fig. 3: Unfasten the starter retaining bolts . . .
Fig. 4: . . . and remove the starter from the engine
Posted on Oct 28, 2010
yes go to this website a download free : http.//repairmanualdownloads.com
sincerely G-d bless you
ernesto cuadra managua, nicaragua. c.a
Posted on Dec 18, 2011
i would get the alternator charge rate checked , use a voltmeter , engine running and put the neg and pos contacts to the neg and pos poles of the battery , this will give the charge rate , if over 14 volts then the alternator needs further diagnosis
Posted on Nov 14, 2014
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