fearkobe Posted August 2, 2015 Share Posted August 2, 2015 00 pathfinder temp gauge goes up almost to 3/4 when turning on the a/c and going up hill with the a/c off. Any idea? Maybe the radiator. I did a flush and thermostat change. Thanks Link to comment Share on other sites More sharing options...
fearkobe Posted August 2, 2015 Author Share Posted August 2, 2015 I don't know if this makes a difference to the temp will rise after 75 mph. Link to comment Share on other sites More sharing options...
NovaPath Posted August 2, 2015 Share Posted August 2, 2015 So the fact that it rises at those temperatures rules out the viscous fan. There is a secondary thermostat on these vehicles as well that is a much bigger pain to get to. If you are overheating at load I would suspect the secondary T-stat. Other potential issues could be the water pump not flowing properly, collapsed radiator hoses, clogged radiator, or air in the system. Just noticed you are talking about a 2000, i'm not actually sure if they have the secondary thermostat so you may want to research that. Link to comment Share on other sites More sharing options...
fearkobe Posted August 3, 2015 Author Share Posted August 3, 2015 Thanks for the reply. On our way to wa state. Started heating up going up hills the heater helps. I'm hoping it's the radiator and not the water pump. I haven't heard of a secondary thermostat but will look into it. I'm new to these. Haven't noticed any collapsed hose. I opened the radiator when it was hot and the coolant went into the coolant bottle and when I start it up it went back in the radiator. Link to comment Share on other sites More sharing options...
fearkobe Posted August 3, 2015 Author Share Posted August 3, 2015 Thanks for the reply. On our way to wa state. Started heating up going up hills the heater helps. I'm hoping it's the radiator and not the water pump. I haven't heard of a secondary thermostat but will look into it. I'm new to these. Haven't noticed any collapsed hose. I opened the radiator when it was hot and the coolant went into the coolant bottle and when I start it up it went back in the radiator. Link to comment Share on other sites More sharing options...
ferrariowner123 Posted August 3, 2015 Share Posted August 3, 2015 What have you serviced? And is it water or coolant mix? And are you sure you're bleeding all the air out? VQ's (if I remember correctly) are a little harder to bleed than VG's. I had that issue when my coolant level was too low and had the A/C on. -Kyle Link to comment Share on other sites More sharing options...
fearkobe Posted August 3, 2015 Author Share Posted August 3, 2015 I'll have to look into the bleeding. I don't think we did that we just let it run with the cap off. Link to comment Share on other sites More sharing options...
fearkobe Posted August 3, 2015 Author Share Posted August 3, 2015 I just put in less than a 1/2 gallon of coolant Link to comment Share on other sites More sharing options...
01Pathmaker Posted August 3, 2015 Share Posted August 3, 2015 2000 should have the vg 3.3. Look for a bleeder on top of the intake plenum, if you did a drain, flush, fill without purging the air out it could be the cause of your issue. The 3.3 does not have a secondary thermostat like the 3.5 1 Link to comment Share on other sites More sharing options...
ferrariowner123 Posted August 3, 2015 Share Posted August 3, 2015 There were a couple of overlap years before the last of the VG's left the pathfinder. Late production 2000 pathfinders could have a VQ. -Kyle Link to comment Share on other sites More sharing options...
fearkobe Posted August 3, 2015 Author Share Posted August 3, 2015 it has the 3.3. im leaning towards the radiator. Rock auto has one for 70 bucks. Link to comment Share on other sites More sharing options...
fearkobe Posted August 6, 2015 Author Share Posted August 6, 2015 Update I changed the radiator and clutch fan so far no temp rising. I bought a new fan clutch and I had to get longer studs to put the new fan clutch on cause the plate was thicker then the original one. Went to another part store and it was the same thickness. Weird but got it working. Has anyone ran on to that problem before? Link to comment Share on other sites More sharing options...
fearkobe Posted August 11, 2015 Author Share Posted August 11, 2015 so far so good on not getting hot. but im still adding coolant every few days. oil looks good and not milky. i thought it did have a blown head gasket cause the cap looks milky but the oil isnt. like i said i had it tested for a blown head gasket twice but 2 mechanics. i see no leaks dunno what else to look for. Link to comment Share on other sites More sharing options...
01Pathmaker Posted August 11, 2015 Share Posted August 11, 2015 Glad to hear your temp issue is gone. As for adding coolant, did you purge the air from the system? It could be that air is working itself out with repeated warm up cycles therefore dropping the level (unless you've been adding a lot). A milky appearance on the bottom of the oil cap is not uncommon, especially when shorter trips occur frequently, this is a build up of condensation. Link to comment Share on other sites More sharing options...
fearkobe Posted August 11, 2015 Author Share Posted August 11, 2015 I ran it till the fluid came straight out with out any air. It over heated a little sitting in the parking lot. Added coolant. Right now we just started to over heat getting on the highway pulled over the coolant looked good. To the radiator cap off felt nuked but all the fluid bursted out. Added coolant again and it's running cool. Dunno what's going on here. Link to comment Share on other sites More sharing options...
fearkobe Posted August 11, 2015 Author Share Posted August 11, 2015 Sometimes the cap feels cold and the top radiator house soft with barely any water in it and the bottom hose feels like nothing in it. Could this be the water pump or air in the system? Link to comment Share on other sites More sharing options...
01Pathmaker Posted August 13, 2015 Share Posted August 13, 2015 (edited) Did you purge from the bleeder on top of the intake plenum? Trapped air in the cooling system can cause inconsistent temps, overheating and cavitation. Make sure during the bleeding process it gets warm enough to get full flow through the thermostat. Edited August 13, 2015 by 01Pathmaker Link to comment Share on other sites More sharing options...
fearkobe Posted August 13, 2015 Author Share Posted August 13, 2015 Yes I took the bolt off when it was cooling off when I replaced the radiator. I ran it till solid fluid was coming out. Thanks but I don't know where coolant going. Link to comment Share on other sites More sharing options...
fearkobe Posted August 13, 2015 Author Share Posted August 13, 2015 Ok so my brother in law took it in and said the oil sensor by the filter was leaking so they replaced it and said the oil was over filled by 1qt weird I only put 5. They purged it. Just have to see if the water disappear. Link to comment Share on other sites More sharing options...
fearkobe Posted August 13, 2015 Author Share Posted August 13, 2015 rack and pinion steering needs boots has anyone done this? Link to comment Share on other sites More sharing options...
Kingman Posted August 14, 2015 Share Posted August 14, 2015 They take 4 quarts not 5. Link to comment Share on other sites More sharing options...
01Pathmaker Posted August 14, 2015 Share Posted August 14, 2015 ^^Correct, 3.3 only takes 4qts with filter change Link to comment Share on other sites More sharing options...
fearkobe Posted August 14, 2015 Author Share Posted August 14, 2015 I don't know what's going on with this truck still uses coolant and over heats still going up hill. had it looked at yesterday. They purged it. I'm thinking bad thermostat? Where would the coolant be going? Its not in the oil or transmission. Link to comment Share on other sites More sharing options...
fearkobe Posted August 14, 2015 Author Share Posted August 14, 2015 Also it had a rough idle Link to comment Share on other sites More sharing options...
fearkobe Posted August 15, 2015 Author Share Posted August 15, 2015 Could it also be I ran a lower temp thermostat? Link to comment Share on other sites More sharing options...
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