Question about 1994 Acura Legend
How do you know that the head gasket is good? even with a bad thermostat it would not overheat in 3-5 min, a bad fan or relay would not make it overheat so fast , this sounds like a bad waterpump that has a bad impeller that does not circulate the coolant , but would not take coolant , if you are going through coolant and overheating that fast i would say head gasket but if you were not loosing coolant i would say to check the water pump impeller, i have seen them rust away or break,
Posted on Oct 30, 2012
Water getting into water jacket through a blown head gasket will cause bubbles that smell like exhaust in your radiator. This exhaust is also under much higher pressure than your coolant system can handle which will cause exhaust and coolant to go past the radiator cap into the overflow. Water getting into combustion chamber will steam a mirror placed over the problem spark plug hole while engine is still warm. This is better than a compression test. This 91 to 95 Legend 3.2L needs a really good thermostat as it is a double valve and its operative temp and timing is critical. also its total length back to the bypass port is important. With a heat gun on it, check its expanded length and compare. Bad therm design or cheap activating springs will cause it to recirculate hot water thru the bypass ports to the engine, sending water to the same places it came from. Laser thermometers help to trace the path of warming coolant, and you can check flow through the top hose with a homemade sight tube. Radiator ribs and bottom hose stay too cool & engine boils if you have lack of water or water flow. Good flow will warm nearly the whole radiator. Lots of places for air to hide in this rude system. run an auxiliary water pump (German cars use them) at the top hose to aid flow if you are stuck on the road and remove the thermostat. Not a car for hot climates. Thermostat is way to critical for a reliable system. Really rude. You can mod your therm yourself. Always release the little pointed air bleed bolt on the crossover tube to fill the radiator completely.
Posted on Mar 27, 2016
Try a few things
1. Bleed the cooling system to make sure there are no air pockets or bubbles trapped inside. This can cause overheating and sometimes erratic idling as well.
2. Remove and clean your EGR valve and the EGR pipe. This little pipe can and will over time get complete;y blocked and causing overheating. If left uncleaned/untreated it will eventaully cause BHG Here's a tutorial on how to remove the EGR for cleaning. http://www.acura-legend.com/vbulletin/f13/diy-egr-removal-pics-68912/
3. Get a block tester kit and check to see if you have a leak. These kits can be bought from the local auto part stores and are quite good at detecting cylinder leaks. http://www.amazon.com/Lisle-75500-Combustion-Leak-Detector/dp/B0007ZDRUI/ref=sr_1_1?ie=UTF8&qid=1384626493&sr=8-1&keywords=head+gasket+test+kit
Posted on Nov 16, 2013
I have a 92 legend and mine does the same thing it runs fine smokes a little im pretty sure its my headgasket because they are known for it
Posted on May 17, 2013
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Posted on Jan 02, 2017
SOURCE: 1993 Acura Legend Overheating.
This could happen if your fan is indeed weak. To test disconnect the thermostat of the radiator by removing the terminals near the radiator hose towards the engine. You should see the fan run at its highest speed, then you can check if your fan has weakened.
Posted on Jun 07, 2009
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