cachaco736 Posted February 13, 2011 Report Share Posted February 13, 2011 Hi to all! I have a stock 89 quest. Recently been having some overheating problems due to ????. Radiator has been cleaned and repaired by a radiator shop, hoses are new, has no thermostat... dunno what to say. Its been having this problem for some time now. I fill the radiator up with coolant, and I run it for +- 20 miles and next day water/coolant needs to be added... id say 1/3 of a gallon. Maybe a leak? maybe gaskets are bad, I dont know. I checked the water flow with the radiator cap off, its now flowing smoothly, it bubbles up... maybe the water pump?. Please leave me suggestions, comments, anything. Will appreciate anything Thnx Link to comment Share on other sites More sharing options...
misterdrifter Posted February 13, 2011 Report Share Posted February 13, 2011 maybe head gasket.... :-\ Link to comment Share on other sites More sharing options...
Indiana Posted February 13, 2011 Report Share Posted February 13, 2011 You must run with a thermostat, that is a regulator and the water is flowing way too fast and has no time to cool down in the radiator where its supposed to. That's good the radiator was cleaned and as long as the pump is turning and the impellor isn't rotted off from not using coolant over previous years. You must use coolant you can't just use water. Water only your motor rots from the inside out and quickly too and it doesn't cool the same and it boils at lower temperatures. Boiling water is expanding and not the same. Steam won't cool the motor either after some escapes and there's less water in the system. Same happens when using coolant too its just safer and won't corrode the block and head and intake and turbo, its just rots everything not running coolant. If the cap is leaking, its leaking out pressure, that pressure is what is letting the coolant work with that pressure to raise the boiling point and keep the coolant in the system. If your exhaust is plugged up it will run hot. If your ignition timing is too far advanced it will run hot. If your fuel mix is too lean it will run hot. If the terminals of the MAF connector in the harness are loose and not making connection it can make the car run lean, which means it will run hot. Look in the end of the connector you can see the terminals are folded tin and the ends meet, use a pick and tighten all those up some so they grab the terminals in the MAF when you plug it back in. If that's not helpful, what else is going on with this car and what was done to it from a stock setup? Link to comment Share on other sites More sharing options...
cachaco736 Posted February 25, 2011 Author Report Share Posted February 25, 2011 Well, I just changed the water pump, old one had 5+ years on it, and also added a thermostat... Ran the car for 10 mins and temp gauge stayed in middle. When I got back home I opened the hood and it was supppeeer hot underneath, couldn't even touch the upper radiator hose. Head Gasket?... another problem Came up also... the voltage gauge was off the charts ... only electrical thing i did was connect the oxygen sensor, since the cables had disconnected cuz the heat (or maybe to much voltage burnt the wires)... PS: does anyone have an actual pic of how to install the thermostat? I looked in the manual but its confusing lol... doesn't make sense... Thnx Link to comment Share on other sites More sharing options...
ramz28 Posted February 25, 2011 Report Share Posted February 25, 2011 If its your head gasket: does your oil have a chocolate milk shake look? is the coolant boiling in the radiator?. The thermostat goes spring side into the engine. Is the lower hose hot or cold or warm? If the upper hose is hot then u installed the thermostat correctly. does the fan work? Well, I just changed the water pump, old one had 5+ years on it, and also added a thermostat... Ran the car for 10 mins and temp gauge stayed in middle. When I got back home I opened the hood and it was supppeeer hot underneath, couldn't even touch the upper radiator hose. Head Gasket?... another problem Came up also... the voltage gauge was off the charts ... only electrical thing i did was connect the oxygen sensor, since the cables had disconnected cuz the heat (or maybe to much voltage burnt the wires)... PS: does anyone have an actual pic of how to install the thermostat? I looked in the manual but its confusing lol... doesn't make sense... Thnx Link to comment Share on other sites More sharing options...
TexasQuest Posted February 25, 2011 Report Share Posted February 25, 2011 Make sure your fans are working like stated above. Link to comment Share on other sites More sharing options...
cachaco736 Posted February 25, 2011 Author Report Share Posted February 25, 2011 Oil is normal color, fans are working, I even have the secondary fan running directly, I just feel it to hot compared to 4 months back. Ill run the car again and touch the lower radiator hose and let u know. Any ideas why my voltage is so high? Link to comment Share on other sites More sharing options...
The Rabbit1 Posted February 25, 2011 Report Share Posted February 25, 2011 Oil is normal color, fans are working, I even have the secondary fan running directly, I just feel it to hot compared to 4 months back. Ill run the car again and touch the lower radiator hose and let u know. Any ideas why my voltage is so high?Alternator is overcharging. This thread has a pic as to how the thermostat goes: http://starquest.i-x.net/viewtopic.php?t=2599&start=75 Link to comment Share on other sites More sharing options...
cachaco736 Posted February 26, 2011 Author Report Share Posted February 26, 2011 If its your head gasket: does your oil have a chocolate milk shake look? is the coolant boiling in the radiator?. The thermostat goes spring side into the engine. Is the lower hose hot or cold or warm? If the upper hose is hot then u installed the thermostat correctly. does the fan work? Left the car running for 15 mins and revved it a bit... Touched upper hose, was hot.. touched lower hose, was warm/hot, id say almost same as upper hose... (I took the radiator to a radiator shop to have it cleaned not more then month ago) :/.. i swear ima sell my car soon if problems persist Link to comment Share on other sites More sharing options...
TexasQuest Posted February 26, 2011 Report Share Posted February 26, 2011 I know how you feel man and I'm pretty sure all of us do too. Hang in there man, you'll figure it out. These cars take a zen-like patience lol. Link to comment Share on other sites More sharing options...
Skullzaflare Posted February 26, 2011 Report Share Posted February 26, 2011 wait, the temp gauge is reading normal, but because a hot object feels hot you think its overheating?your not overheating if the tempo gauge is reading normalyour loosing coolant else where, weither it be throttle body gasket, a hose, or the heatercore Link to comment Share on other sites More sharing options...
The Rabbit1 Posted February 26, 2011 Report Share Posted February 26, 2011 get coolant pressure tester at autozone or the like, pressurize coolant and look for leaks. Have you replaced every coolant line? they are only old enough to drink if they are the OEM ones.. there are 8 in the engine bay I can think of off the top of my head.. Link to comment Share on other sites More sharing options...
Skullzaflare Posted February 26, 2011 Report Share Posted February 26, 2011 get coolant pressure tester at autozone or the like, pressurize coolant and look for leaks. Have you replaced every coolant line? they are only old enough to drink if they are the OEM ones.. there are 8 in the engine bay I can think of off the top of my head..2 heater hoses, 2 turbo feed/return, 1 behind waterpump, 2 radiatorthough i think you are right, i think there is 8, i swear i seen anotherit would be 9 including the one on the heater core in the car Link to comment Share on other sites More sharing options...
cachaco736 Posted February 26, 2011 Author Report Share Posted February 26, 2011 All the lines are new lol, maybe im just paranoid... but i do know the alternator is overcharging, voltmeters marking 16+v and all I did was put in a new water pump and adjust the belt lol. Ill run the car for 20-30 miles and see how it acts. Link to comment Share on other sites More sharing options...
cachaco736 Posted February 26, 2011 Author Report Share Posted February 26, 2011 wait, the temp gauge is reading normal, but because a hot object feels hot you think its overheating?your not overheating if the tempo gauge is reading normalyour loosing coolant else where, weither it be throttle body gasket, a hose, or the heatercore Temp gauge is reading normal, but I can feel alot of heat on my feet while im driving... that never used to happen (thats when i drive it for long distances) and when I touch the oxygen sensor cable it literally burns, i replaced it cuz it had melted...(never use to happen either)... so I still assume its overheating regardless of the temp gauge... dunno lol Link to comment Share on other sites More sharing options...
Indiana Posted February 26, 2011 Report Share Posted February 26, 2011 Heat blowing on your feet may be one of the hoses on the actuators under the dash came off and that will let it move to the floor since it needs some vacuum to change it. Look on the passenger side under the dash by the console. http://www.b2600turbo.com/images/hvacvac.jpg Are you still having to add coolant? Sure it wasn't just air in the system after you changed those hoses and the thermostat? That 02 wire, yes it gets hot from the exhaust and its just laying on top of it. Link to comment Share on other sites More sharing options...
Skullzaflare Posted February 26, 2011 Report Share Posted February 26, 2011 Heat blowing on your feet may be one of the hoses on the actuators under the dash came off and that will let it move to the floor since it needs some vacuum to change it. Look on the passenger side under the dash by the console. Are you still having to add coolant? Sure it wasn't just air in the system after you changed those hoses and the thermostat? That 02 wire, yes it gets hot from the exhaust and its just laying on top of it.another scenario, if his heatercore is leaking (the core not hose) it rots out that paper screen that blocks the foot heater. mine was rotted out thats why i always had hot feetwhich would explain the hot feet and loosing coolant Link to comment Share on other sites More sharing options...
Indiana Posted February 26, 2011 Report Share Posted February 26, 2011 Ya, living where it freezes and not using antifreeze will do that. You'd be surprised how many cars I've seen that were using water or mostly water I just drain them or put in antifreeze so that won't happen. Could have been from anyone in the past. Link to comment Share on other sites More sharing options...
cachaco736 Posted February 27, 2011 Author Report Share Posted February 27, 2011 I think I know what it is... Last mechanic who worked on my car used that "gun tool" to check damper speed (please let me know the name of that tool) and if im not mistaken said it was to slow and moved something on the distributor cap to speed it up. Prolly why its overheating and why the alternator is overcharging!???.. yes/no? Friend of mine told me it should mark 10 on the gun, thats normal stock speed. Link to comment Share on other sites More sharing options...
The Rabbit1 Posted February 27, 2011 Report Share Posted February 27, 2011 the base timing, yes it should be no more than ten. It isn't a chevy to be setting at 15.. Link to comment Share on other sites More sharing options...
Indiana Posted February 27, 2011 Report Share Posted February 27, 2011 Does it now idle higher? There's a 10 before and after TDC, TDC is just "T", you want the one before but only after the coolant is hot. http://www.b2600turbo.com/images/IM002985.JPG Link to comment Share on other sites More sharing options...
cachaco736 Posted February 27, 2011 Author Report Share Posted February 27, 2011 "uuzaaaa"... i need patience..., seems like the alternator isnt workin, it over charged my battery, and now I have a break fluid leak... lol, all for changing the water pump... 1st things 1st tho, gona lower the base timing to 10... then work my way up from there. Im pissed lol Link to comment Share on other sites More sharing options...
Recommended Posts