Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

5.3

fairly significant
Typical Repair Cost:
$1,642.00
Average Mileage:
124,033 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. replace head gasket, water pump, radiator (2 reports)
  2. not sure (1 reports)
2003 Honda Civic cooling system problems

cooling system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Honda Civic:

Unsubscribe any time. We don't sell/share your email.

2003 Honda Civic Owner Comments

problem #3

Jul 012015

Civic EX 1.7L

  • Automatic transmission
  • 144,300 miles

A D V E R T I S E M E N T S

THIS IS MY FIRST HONDA AND I REPLACE THE TIMING BELT, WATER PUMP, THE RESPECTIVE SEALS AND I REPLACE THE RADIATOR AND THE THERMOSTAT. ALL THE COOLING SYSTEM LOOKS WORKING BUT THE VEHICLE IS OVERHEATING MOST WHEN I STOP AND HAVE TO WAIT FOR TRAFFIC LIGHT OR IN SLOW TRAFFIC. I DO NOT KNOW WHAT I HAVE TO DO. THANKS

- , Ashburn, VA, USA

problem #2

Sep 092013

Civic EX 1.7L

  • Automatic transmission
  • 128,000 miles

I have an antifreeze leak that just occurred about 4 weeks ago. During my daily travel to work, temp of engine all of sudden read was reading H. I placed water in tank to hold me over so I could eventually place 50/50 mix for Honda into car and had garage look at it. They could not tell where leak was after running the engine for 4 hours. They flushed system and refilled with 50/50 and a sealant mix. I just hope it works.

I have not had any big issues since then until yesterday when the Overflow hose to the radiator somehow became disconnected. I am in process of getting a hose clamp to keep it on. Hope that works also.

- , Enola, PA, USA

problem #1

Jun 062012

Civic LX 1.7L 4 cyl

  • Automatic transmission
  • 99,800 miles

Car overheated 56 miles into a recent roadtrip I was taking on my way to a vacation. The car had to be towed all the way back home where I replaced the thermostat and fan switch, but it kept overheating. Took it to the local dealership where they diagnosed it as having a leaking headgasket, cracked radiator, and said it needs a new water pump, so we also replaced the timing belt while they had it all torn apart anyway. I just couldn't believe that a Honda Civic would already have a blown headgasket and cracked radiator before the car even gets to 100,000 miles. The total cost for all of this will exceed $1,600.

- , Columbia, MO, USA

Not what you are looking for?