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Coolant Leak

Got a problem with your stock CRX? This is where you should start.

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Coolant Leak

Postby jmwgomz » Tue Jun 16, 2020 12:21 pm

Hello everyone,

Had my first ever problem with the CRX! While driving down the freeway, I noticed the temperature gauge was @ about the 3/4 mark. It usually stays between 1/4 & 1/2 on my car. I pulled to the shoulder and immediately noticed steam coming out from under the hood. Once I opened the hood, I could see steam and several streams of coolant gushing out of a small hose just behind the valve cover. I decided to have the car towed home so I could troubleshoot later.

Has anyone had to replace this hose? I assume I can purchase the correct diameter hose and cut it to length. A quick search on here seems to confirm this. Or, would it be better (or perhaps necessary) to buy a hose kit from a manufacturer?

Thanks in advance,
Omar

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Re: Coolant Leak

Postby Baker » Tue Jun 16, 2020 1:39 pm

I would look over the other hoses to check for damage or dry rot.
BUT, It may not be a bad idea, since you're replacing one, just to get a hose kit and do it all at once and have that piece of mind.
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Re: Coolant Leak

Postby jmwgomz » Tue Jun 16, 2020 1:53 pm

Baker wrote:I would look over the other hoses to check for damage or dry rot.
BUT, It may not be a bad idea, since you're replacing one, just to get a hose kit and do it all at once and have that piece of mind.


Thanks for the reply Baker! Would you/anyone else recommend a specific kit? This is an '88 DX with a D15B2

I think a kit may not be that easy to find.
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Re: Coolant Leak

Postby jmwgomz » Tue Jun 16, 2020 3:46 pm

Just did a little more research and I'm pretty sure my issue is with #4 on this diagram:

https://www.hondaautomotiveparts.com/v- ... eater-hose

Isn't this just Heater hose I would cut to length?

I also contacted Mishimoto and they told me they don't make a direct fit kit for my engine.
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Re: Coolant Leak

Postby Baker » Wed Jun 17, 2020 6:48 am

jmwgomz wrote:Just did a little more research and I'm pretty sure my issue is with #4 on this diagram:

https://www.hondaautomotiveparts.com/v- ... eater-hose

Isn't this just Heater hose I would cut to length?

I also contacted Mishimoto and they told me they don't make a direct fit kit for my engine.


Mishimoto makes them for the B series motors.
Samco makes them for d series.
https://www.corsportusa.com/i-360-1988- ... ieces.html

You could find the correct diameter hose and cut to length.
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Re: Coolant Leak

Postby jmwgomz » Wed Jun 17, 2020 5:37 pm

Well, I got it replaced and I don't see any leaks! However...

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I seem to have greater issues. The car is now overheating. I ran it for ~15mins after topping off the coolant in the radiator & expansion tank and it quickly got too hot.

I'm thinking best case scenario: I need to bleed the system (I've never done this any tips would be most welcome).

and among the plethora of worst cases: I need a new thermostat.
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Re: Coolant Leak

Postby jmwgomz » Wed Jun 17, 2020 7:45 pm

The cooling fan doesn’t come on at all when the temp goes up. Both fans are working though. They both come on if I turn the A/C on. Any thoughts?
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Re: Coolant Leak

Postby jmwgomz » Tue Jun 30, 2020 12:15 pm

I decided to bite the bullet and take the CRX in to the shop:

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Turns out I've got a few things that need addressing. Thermostat is indeed shot. The shop is going to go ahead and replace the timing belt, water pump, new brakes all around, spark plugs/cables & oil change. I bought the car a few years ago with ~30K miles and I've never done the timing belt service. The car now has ~75K miles. Given the car is +30yrs old, I probably should've done the timing belt earlier.
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Re: Coolant Leak

Postby ykf7b0 » Tue Jun 30, 2020 5:59 pm

That is really low mileage so it must have sat a lot. Part of the fun of owning an old car is learning to work on it yourself. You will learn enjoy that and save some money too! Good luck with the car!!!
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Re: Coolant Leak

Postby jmwgomz » Thu Jul 02, 2020 1:16 pm

Yeah, I've been doing everything on it since I bought it. Nothing major as I'm not that well versed. Oil changes, installed a new headunit/speakers, battery, etc.

How much would you folks expect to pay for a shop to do all that work?

1) New Thermostat/Flush & Refill coolant
2) New Water Pump
3) New Timing Belt/Drive Belts/Seals
4) New Brakes (Shoes/Pads/Disks/Drums)
5) New Spark Plugs/Cables
6) Oil Change
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