Catera coolant leak - Page 6

ewill3rd · #51 (**permalink**) 03-19-07, 06:34 AM

The HCV is on the rear of the engine, passenger's side.
It has a bunch of heater hoses going into it, you can't miss it.

BLK98LAC · #52 (**permalink**) 03-19-07, 10:33 AM

i think i found it.

black, has 2 hoses going in one side, one out the other and a vacuum line off the top.

as soon as i grabbed it i felt coolant all over the bottom of it, so im hoping its the problem.

going to the dealer today to get a new one.

ewill3rd · #53 (**permalink**) 03-19-07, 10:54 AM

Sounds like you are on top of it!
The hose clamps can be a pain.
Good luck.

BLK98LAC · #54 (**permalink**) 03-19-07, 12:39 PM

the hose clamps were the screw type, so it was easy.
ordered the part this morning and also got me a crapload of tools from sears.
lol

mytmous · #55 (**permalink**) 05-07-07, 12:24 PM

anyone know where I can get a cheap ext. oil cooler for mine?

01 catera, been down going on 3 weeks, I've broke 3 of the oil banjo bolts
trying to keep it from leaking, I did repair the coolant leak(oil cooler plate)
I've hacked the lines, just need a cheap oil cooler.

The one's around here are $60 up to like $200+

thanks.

Jair28 · #56 (**permalink**) 06-27-07, 09:46 AM

My 2000 Cat is leaking from this area, but when I tore it down to reseal the coolant plate I found a different problem. My leak is at the coolant banjo bolts that feed the heat exchanger. The rubber/metal washer/gaskets on the banjo bolts were blown. I couldn't find any similar ones that would fit so I used copper washers. Still leaking. Does anyone know where I can find these seals?

Thanks for all the help everyone here has been! I'm pretty good mechanically, but without diagnostic help from this site I would have parted with my Cat long ago.

Jair28 · #57 (**permalink**) 06-28-07, 02:21 PM

Nevermind, found the part # 12992647. Dealership wants $7.04 ea. GMPARTSDIRECT.com $4.17 ea.

R-Caddy · #58 (**permalink**) 06-30-07, 12:34 AM

I had my heater control valve changed about 2 years ago. The the car started leaking cooland slowly sometime last year again. One shop told me it was the head gaskets- probably both. I doubted. The strange thing is that it only leaks when the thermostat seems to open. I was told by a friend of mine that if it was the head gaskets the problem would have progressed, but it hasn't. I know I will need valve cover gaskets soon. Can it be the heater control valve again?

CateraKidd · #59 (**permalink**) 07-19-07, 04:52 PM

what r the torque specs for the coolant bridge bolts ?

mytmous · #60 (**permalink**) 07-27-07, 09:46 AM

I have bypassed the bypass, i was tired of replacing that part.

3 in 2 years at $90 each sucked.

here is what i did.

I used a 3/4 to 3/4 hose connector to connect the hose from the coolant bridge( the single hose on right) to the heater core feed line (the lower hose on left, also the one the runs up front under the coolant reservoir) then I used a 3/4 hose to 1/2 npt connector in the top hose on left.

I used teflon tape and a 1/2 flare cap to seal that one tight.

Took about 30mins I've ran it for awhile and not one leak so far, and i have heat when i want it.

Cost me $9 for the parts.