I'm the original owner of my 1997 Civic EX. I have over 300K miles on it and regularly maintained it with the normal scheduled plans. The engine runs well and is still quiet like it was when I purchased it from the dealer. It seems to have the same acceleration and hp as when it was purchased. The last couple years I have had episodes of it running hot from time to time. It has been more persistant this time around.
Here is some background to the situation. A couple years ago I had to replace my radiator with OEM at the dealership. There was nothing noticeable after the replacement. Not sure if it is related or not. Anyway, during long runs, especially in very hot mid-atlantic weather the temp guage would start to move towards the MAX Red/Orange line, never really reaching it. The most usual time this occurs is during a stop at a light or stop sign. Then the guage begins to return to normal when I start to drive, but once it starts to run hot the ever moving guage continues to move from 1/2 to 3/4 at each stop or slow down.
I had it pressure checked the first time at two different shops. All checked out fine. Thermostat was changed once. Radiator cap was changed a year ago. Water pump has been changed 3 times with the replacing of timing belt. The most recent water pump change was about 2 months ago. Thought there could have been a minor leak that went undetected and put a stop leak in radiator. It worked well last year. This summer has been different.
Two funny things happened. About a year ago I noticed the upper radiator hose had squeezed together so I replaced it assuming the structural integrity of it was weak. The same thing happened about a month ago. It was replaced. Now, I keep hearing a "gargling" sound after a long run (20 miles or so in 90 plus degree days) when I turn the car off. The gargling is boiling coolant going into the overflow/expansion tank.
Two weeks ago my car started to run hot after driving about 60 miles in mid 90 degree temps. After leaving it sit several hours while visiting someone, the car ran at normal temp on my drive home when temps were down in the upper 60s.
My car doesn't show any smoke coming out the tailpipe. I do smell a type of fume from my engine. I was told it smells like oil.
Any suggestions? Thanks!
Monday, December 14th, 2020 AT 9:44 AM