1990 Honda Accord EX Overheating
Thread Starter
Honda-Tech Member
Joined: Aug 2015
Posts: 3
Likes: 1
1990 Honda Accord EX Overheating
Hello,
I come here because i had a problem that i can fix, the problem is that i use my car, when it gets to operation temperature if im driving theres no problem, but when i stop the temp gauge goes to the top, before i drive my car i check the coolant level, when it heats up fan operation, everything seems to be ok, but still overheating. have change the hoses, get a new rad, new rad cap and the problem still shows up.----
One curious thing that i saw is when the overheat shows up, tho hoses that come from the radiator to the engine are completly full, actually a few days ago one of them blows up and i had to get a new one, but when the car is cold or warm coolant sems to be running fine. Is there something inside the engine that can block the coolant circulation? And plese dont even mention thermostat, because dont have, i think the previous owner remove it.
I come here because i had a problem that i can fix, the problem is that i use my car, when it gets to operation temperature if im driving theres no problem, but when i stop the temp gauge goes to the top, before i drive my car i check the coolant level, when it heats up fan operation, everything seems to be ok, but still overheating. have change the hoses, get a new rad, new rad cap and the problem still shows up.----
One curious thing that i saw is when the overheat shows up, tho hoses that come from the radiator to the engine are completly full, actually a few days ago one of them blows up and i had to get a new one, but when the car is cold or warm coolant sems to be running fine. Is there something inside the engine that can block the coolant circulation? And plese dont even mention thermostat, because dont have, i think the previous owner remove it.
Honda-Tech Member
Joined: Feb 2009
Posts: 261
Likes: 2
From: Ringgold, GA
Re: 1990 Honda Accord EX Overheating
Thermostat.
Once the car warms up, to the point of the cooling fan turning on, feel the LOWER radiator hose - if it's cold, the coolant is not flowing as it should, which is likely due to the thermostat not opening to allow coolant to flow.
The thermostat should be located near the throttle body/air intake - follow the upper radiator hose from the radiator to the motor - where it enters the motor is where the t-stat should be located.
If it's not the thermostat, I suppose it's possible your water pump could be broken.
Your hose blew open because pressure built up too high - it was probably due for replacement anyway.
Test: If your car has A/C, when you turn on your A/C, do both cooling fans turn on?
Once the car warms up, to the point of the cooling fan turning on, feel the LOWER radiator hose - if it's cold, the coolant is not flowing as it should, which is likely due to the thermostat not opening to allow coolant to flow.
The thermostat should be located near the throttle body/air intake - follow the upper radiator hose from the radiator to the motor - where it enters the motor is where the t-stat should be located.
If it's not the thermostat, I suppose it's possible your water pump could be broken.
Your hose blew open because pressure built up too high - it was probably due for replacement anyway.
Test: If your car has A/C, when you turn on your A/C, do both cooling fans turn on?
Honda-Tech Member
Joined: Oct 2015
Posts: 5
Likes: 0
Re: 1990 Honda Accord EX Overheating
Sounds like a thermostat problem to me too. The thermostat is not in the up-front hose though, it is in the back, which I thought was weird but that's Honda. I followed this video and changed mine in about 30 min:
Don't forget to open the bleed valve after you're done to let the air out, it's right next to the thermostat You fill the system, open the valve until fluid comes out, close the valve, and top off the coolant.
Thread
Thread Starter
Forum
Replies
Last Post
cbr_ryder
Classic Hondas
16
Jul 28, 2023 07:13 AM
Skoalbandit
Honda Accord (1990 - 2002)
13
Jun 16, 2012 02:34 PM