NTHER91 Posted February 14, 2008 Report Share Posted February 14, 2008 ive asked who i trust and normally go to but was wondering if anyone has had the smae problems or come across them 86 bronco II 4x4 5 spd 2.9l will run fine and cool perfect at idle even throw 130+ temp out the vents as soon as i drive it, it will start getting hot and the heat will go away let it idle and its perfect itll cool and throw great heat ive replaced the stat, done a coolant flush and fill itll hold 13 psi and no leaks none in or out of the truck but the RES will eventually fill it self up??? now i know i could replace the water pump and rad. and the heater core and all that but i dont want to just throw parts at it any ideas would be great Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 14, 2008 Report Share Posted February 14, 2008 headgasket leaking putting air in the system.(what makes me think that is the lack of heat after moving )sounds more like a flow problem, either cold spots in the radiator or the impeller for the water pump is rusted off! ill post pics of one in asec to show what i mean! Quote Link to comment Share on other sites More sharing options...
AJ Posted February 14, 2008 Report Share Posted February 14, 2008 kinda sounds like a water pump not moving the water. water pump impellers have been known to fall off. you should be able to take the cap off and rev it, the water level should go down then come back up when you let it idle. if it doesn't look like its moving then thats where i would be looking. Quote Link to comment Share on other sites More sharing options...
DOZZER Posted February 14, 2008 Report Share Posted February 14, 2008 Be careful 2.9l are know for cylinder heads to crack. Did you do a compresion test? Definetly check the coolant flow like Gear Head said. I too have seen impeller rot off of older engines as well. Quote Link to comment Share on other sites More sharing options...
AJ Posted February 14, 2008 Report Share Posted February 14, 2008 headgasket leaking putting air in the system.(what makes me think that is the lack of heat after moving )sounds more like a flow problem, either cold spots in the radiator or the impeller for the water pump is rusted off! ill post pics of one in asec to show what i mean! talking on the phone and typing owns my reply speeds lol. Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 14, 2008 Author Report Share Posted February 14, 2008 the truck did sit for lie 7 yrs also the prev owner has had the heads done 2 times already so he said the pump was prolly my next move since its only $22 so we will see and no compression test done i dont have one and there the tail pipe isnt spitting out anythign abnormal soo i guess ill throw parts at it Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 14, 2008 Report Share Posted February 14, 2008 rusted off impeller blades= no flow http://i5.photobucket.com/albums/y196/gearhead559/100_1112.jpg i have also seen them just come loose! or blockage in the radiator or something like this could do it http://i5.photobucket.com/albums/y196/gearhead559/100_1114.jpg Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 14, 2008 Report Share Posted February 14, 2008 the truck did sit for lie 7 yrs also the prev owner has had the heads done 2 times already so he said the pump was prolly my next move since its only $22 so we will see and no compression test done i dont have one and there the tail pipe isnt spitting out anythign abnormal soo i guess ill throw parts at it those are bad about the heads cracking and pushing air into the cooling system . making a air pocket(ie no heat) and causing over heating. if you have a temp gun run it across the radiator looking for cold spots. the fan clutch could be weak not pulling enough air across the radiator at speed to cool it. but i dont think the fan clutch would cause this! a leak down test would find a leaking head gasket or cracked head. head gasket would have to be very bad for a compression test to pick it up! Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 14, 2008 Report Share Posted February 14, 2008 talking on the phone and typing owns my reply speeds lol. my typing skills are owning lately. spelling is improving aswell.lmao triple posts for the win Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 14, 2008 Author Report Share Posted February 14, 2008 rob how much for a leak down test i think imma replace the pump after confiring with someone i forgot to Quote Link to comment Share on other sites More sharing options...
FourString Posted February 14, 2008 Report Share Posted February 14, 2008 I will agree that it sounds like the water pump blades are done. Had this happen to my first car. Good luck. Quote Link to comment Share on other sites More sharing options...
fattyona12 Posted February 14, 2008 Report Share Posted February 14, 2008 i do have a compression gauge here Quote Link to comment Share on other sites More sharing options...
twistedfocus1647545489 Posted February 14, 2008 Report Share Posted February 14, 2008 I'm thinking water pump is an easy first check... but if it's not the issue I would first make damn sure you have all the air out of the system before you buy any more parts. Do B2's use a closed cooling system or an open? I know closed systems in particular can be tricky to get all the air out of when they have been run out/low and refilled. Quote Link to comment Share on other sites More sharing options...
99FLHRCI Posted February 14, 2008 Report Share Posted February 14, 2008 I agree that it sounds like an impeller issue. Another way to check the head gasket would be to use a combustion gas detector. I know most home mechanics don't have one but, you might be able to find one to borrow on here. I have one out in Marysville if you are that way. All you do is let it warm up and open the thermostat then use the tester to check for combustion gas in the cooling system. Have you checked the cap? You said the system holds 13 psi but, does the cap. My father's truck keeps burping coolant into the resevoir and eventually emptying itself and it is just the cap. I finally went and bought one so hed quit buying more coolant. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted February 14, 2008 Report Share Posted February 14, 2008 i do have a compression gauge here that would find it if the gasket just just plain blown. but then he would be burning coolant aswell. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted February 15, 2008 Report Share Posted February 15, 2008 drain the radiator out into a bucket so you can reuse the coolant and shine a light down inside the endtank I just changed a radiator the other day that had a bunch of muck in the bottom of it car would cool fine at idle and overheat like crazy while drving Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 15, 2008 Author Report Share Posted February 15, 2008 drain the radiator out into a bucket so you can reuse the coolant and shine a light down inside the endtank I just changed a radiator the other day that had a bunch of muck in the bottom of it car would cool fine at idle and overheat like crazy while drving i did a flush and fill when i got it but you know ho wthose wynn's machines work sooo well and i did change the cap also actually i stole (switched) one off adams he dosnt know Quote Link to comment Share on other sites More sharing options...
skold Posted February 15, 2008 Report Share Posted February 15, 2008 clogged heater core, bad h20 pump, Quote Link to comment Share on other sites More sharing options...
FourString Posted February 16, 2008 Report Share Posted February 16, 2008 Have you looked into this yet? Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 16, 2008 Author Report Share Posted February 16, 2008 nope plan to sunday Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 18, 2008 Author Report Share Posted February 18, 2008 BIG ASS CLOG soo.. yea the wynn's flush machine sucks if you have a clog so im replacing the rad. and goign from there Quote Link to comment Share on other sites More sharing options...
DTM Brian Posted February 18, 2008 Report Share Posted February 18, 2008 Glad you figured it out. Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 19, 2008 Author Report Share Posted February 19, 2008 Glad you figured it out. yea now i want a peice of that ranger lol Quote Link to comment Share on other sites More sharing options...
Jelloman4571647545499 Posted February 19, 2008 Report Share Posted February 19, 2008 hope your not talking about mine. My ranger is a Bronco Ass beater. Ask adam and TJ dont take my word on it. Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted February 19, 2008 Author Report Share Posted February 19, 2008 hope your not talking about mine. My ranger is a Bronco Ass beater. Ask adam and TJ dont take my word on it. not everythign is about you and i quoted brian not you, ill wait till i can beat your car Quote Link to comment Share on other sites More sharing options...
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