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Can I flush the heater core in a 1989 corvette Gary

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Yes you can take heater hoses off & flush out this way

Posted on Nov 11, 2010

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How can I identify the cooling system hoses on a GM 1989 5.0 liter engine for installing a flushing kit?


Your vehicle is way past a flush kit. Even if you recently replaced the radiator. If it over heats, you would have to use something heavy duty, Like muriatic or sulfuric acid. Then those would eat up the heater core and the radiator. Both copper and aluminium. If you have no heat, then replace the heater core. I have only come across a couple of engines that needed such a drastic acid solution.

Oct 19, 2014 | 1989 Chevrolet C1500

1 Answer

HEAT NOT WORKIN IN 1989 CADILLAC?


either the blower motor is bad or you need to flush out the heater core.due to the age of the vehicle its probably clogged up with deposits and needs to be flushed out with air pressure or you can try hooking up your garden hose to it and flushi9ng it out that way

Jan 25, 2013 | 1989 Cadillac Sedan DeVille

1 Answer

Flush heater core on 2000 grand cherokee


If it's clogged it can be cleared with the use of Garden hose pump. The water has to be turn into the heater hose line and then water has to be removed out via the pump.

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For complete step by step procedure, refer heater core flushing and other help links mentioned below.


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Click the link below: -----

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How to Flush Heater Core?
http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html
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Also check these link too:---

HEATER CORE REPLACEMENT, HEATER CORE REMOVAL, TROUBLESHOOT HEATER CORE, FLUSH HEATER CORE,
http://alltypesofpartsreplacing.blogspot.com/2012/12/heater-core-replacement-heater-core.html

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These will help.
Thanks.

Dec 25, 2012 | 2000 Jeep Grand Cherokee

2 Answers

Heater core replacement


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 28, 2010 | 1989 Chevrolet S-10 Blazer

1 Answer

Only cold air coming out of vents. Changed thermostat and heater core. Truck is a 1989 f350 7.3 diesel. Heater hoses are hot and heater core compartment is warm.


you may have to flush out the motor and raidiator. check to seeif your water is not rusty if so that means you need to flush the motor . some times maylead to clogged water jackets in the motor.

Dec 17, 2010 | Ford F-350 Cars & Trucks

1 Answer

I WANT TO BY PASS MY HEATER CORE ON A 1989 CORVETTE WOULD LIKE TO KNOW THE BEST WAY TO DO SO.


The two smaller hoses that run to and into the fire wall of the car on the pass. side most likely the size os 5/8 and 3/4 disconnect them from the heater core and connect them together

Dec 12, 2010 | Chevrolet Corvette Cars & Trucks

2 Answers

No heat in 1989 ford f 250


feel both heater hoses if only one is hot heater core not flowing coolant need to flush core if they both are not hot may be a bad thremostat

Jan 17, 2010 | 1989 Ford F 250

1 Answer

I have a 1989 ford bronco V6 the heater doesn't work, It works sometimes for just a minute and then goes back to cold. Help it has been 7 degrees when I take my kids to school and with no heat it feels...


chances are your core is the problem.

remove the two hoses that go through the firewall and flush water through them both to clean the core. My 70 mustang did the same thing and I flushed the core and it works fine now.

Dec 10, 2009 | 1989 Ford Bronco

1 Answer

Don,t throw out much heat.


Have you tried flushing out the heater core with a garden hose?

Mar 02, 2009 | 1989 GMC Sierra

1 Answer

1989 maxima no heat in vehicle


Put your hand on the heater hoses as close to the fire wall as possible find out if both hoses are hot.Do this when the vehicle is cold allow car to heat up with heater open and running.If both equaly hot then heater core at fault.If different check water supply to cold hose.

Oct 13, 2008 | 1989 Nissan Maxima

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