FUELER Posted October 18, 2007 Share Posted October 18, 2007 VG33 in a 99 QX4 Long story short: I had a maintenance service done, parts related to cooling included water pump, thermostat, fresh coolant, and new hoses. A few months after, I started noticing that my temp needle would go up with engine idling, and not moving. Needle moves up past 50% after 5-10 minutes and can easily reach 90% if idling on a hot day for over 10 mins. Temp needle goes back down when I get moving. I have replaced the fan clutch once I realized this, and I can tell that it's definitely grabbing hard and the fan is pushing air hard whenever it's running hot. I replaced with a TORQFLO autozone fan clutch. Could this be the result of a bad thermostat? Bad fan clutch from autozone? All ideas are appreciated... Link to comment Share on other sites More sharing options...
Simon Posted October 18, 2007 Share Posted October 18, 2007 Could be a bad WP, bad T-stat, or clogged rad. Take the rad cap off, and see if you have good coolant flow once the temp moves up a bit. I should be flowing well for sure once your temperature gauge hits half. Link to comment Share on other sites More sharing options...
Casey.T Posted October 18, 2007 Share Posted October 18, 2007 (edited) I have see the fan put on backwards.... It should be sucking not pushing... As Simon pointed out the good stuff.... Could also be that the T-Stat was not put in with the bleeder in the 12 Oclock position(Dave) Edited October 18, 2007 by Casey.T Link to comment Share on other sites More sharing options...
FUELER Posted October 18, 2007 Author Share Posted October 18, 2007 Oh my gosh I never checked the fan... although I think its on the right way. I'll check. Link to comment Share on other sites More sharing options...
FUELER Posted October 21, 2007 Author Share Posted October 21, 2007 Found the problem.... hidden dirt within the exterior fins of the radiator.... Radiator looked clean, but when I took a garden hose to the back of it, dark brown water was coming out the other side Everybody remember to keep your radiators clean!! Link to comment Share on other sites More sharing options...
DSmitty182 Posted October 21, 2007 Share Posted October 21, 2007 Found the problem.... hidden dirt within the exterior fins of the radiator.... Radiator looked clean, but when I took a garden hose to the back of it, dark brown water was coming out the other side Everybody remember to keep your radiators clean!! That dark brown water could also be stop aleak which also can lead to other problems stopping up your heater core.. Link to comment Share on other sites More sharing options...
FUELER Posted October 21, 2007 Author Share Posted October 21, 2007 i'm talking about the outside of the radiator... not the inside.... i took a garden hose from the engine side and pushed it through the radiator towards the front and WOW there was a lot of dirt that has accumulated on my radiator from all the times ive been offroading.... just a little bit of dirt made a huge difference in cooling Link to comment Share on other sites More sharing options...
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