Question about 1994 Oldsmobile Achieva Special Edition

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Replacing a heater core in a 1994 olds. achieva.

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  • bennie20 May 14, 2009

    can't locate the heater hose connections on the firewall of my achieva

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  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Raise and safely support the front of the vehicle.
  4. If necessary, remove the rear lateral transaxle strut mount.
  5. Detach the drain tube, then disconnect the heater hoses from the core tubes.
  6. Carefully lower the vehicle.
  7. Remove the console if equipped.
  8. Unfasten and remove the sound insulators, console extensions and/or steering column filler, as required.
Replacing a heater core in a 1994 olds. achieva. - 0900c152800a93fc.jpgFig. 1: Unfasten the sound insulator retaining bolts ... 0900c152800a93fd.jpgFig. 2: ... then remove the sound insulator
  1. On some models it may be necessary to remove the steering column opening filler.
  2. Remove the floor or console outlet ductwork and hoses.
  3. Remove the heater coReplacing a heater core in a 1994 olds. achieva. - 0900c152800a93fe.jpg>
0900c152800a93fe.jpgFig. 3: Remove the heater core access cover
  1. Unfasten the heater core moReplacing a heater core in a 1994 olds. achieva. - 0900c152800a93ff.jpg then extract the heater core from the vehicle.
0900c152800a93ff.Replacing a heater core in a 1994 olds. achieva. - 0900c152800a9400.jpg</a><span>Fig. 4: Unfasten the heater core retaining bolts; most later models are secured with clamps</span>
<a><img src=Fig. 5: Remove the heater core from the vehicleTo install:
  1. Install the heater core, then secure using the clamps/bolts.
  2. Fasten the heater core cover.
  3. Connect the outlet hoses and ducts.
  4. Install the sound insulators, console extensions and/or steering column filler.
  5. Raise and safely support the vehicle.
  6. Install the drain tube and connect the heater hoses to the core tubes.
  7. If removed, install the rear lateral transaxle strut mount, if removed.
  8. Carefully lower the vehicle.
  9. Connect the negative battery cable.Fill cooling systReplacing a heater core in a 1994 olds. achieva. - 182943c.jpgk for leaks. Start the enginReplacing a heater core in a 1994 olds. achieva. - 164cdd5.jpg to come to normal operatinReplacing a heater core in a 1994 olds. achieva. - 8032c04.jpgre. Recheck for leaks and chReplacing a heater core in a 1994 olds. achieva. - 18be863.jpg level. Add if necessary.6d0c523.jpg182943c.jpg164cdd5.jpg8032c04.jpg18be863.jpg

Posted on Oct 21, 2008

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  • 1118 Answers

SOURCE: smoke and antifreeze smell inside car

do you smell antifreeze? does it steam up windshield when defrosters are on? is there antifreeze on the floor. if your answer is yes to any of the questions i asked its heater core. the best thing to do is go to a web site of any major auto parts store they will have all the diagrams and instuctions you will need to do this.

Posted on Jan 23, 2009

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1 Answer

How to repair the heater core


Depends on what the heater core is made of.
All repair shoppes would replace the core, and not try to fix it.
Back 30 years ago, they were repairable, as they were made of brass and copper, and could be soldered.
Today, they are usually plastic and/or aluminum, and are supposed to be replaced when they go bad.
You could try some good "stop leak" in your radiator, and leave the heater on for a few weeks to get the water to circulate from the radiator to the engine to the heater, but alas, I've never had that work yet, and I have tried about 20 times (on 20 cars).
Stop leak would sure be cheaper that having the core replaced.
Be blessed.

Mar 18, 2013 | 1994 Oldsmobile Achieva Special Edition

1 Answer

How do u replace a heater core in a 1994 chevy g20 conversion van


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 23, 2010 | 1994 Chevrolet G20

1 Answer

Where is the heater core located on a 1994 Lincoln Town Car?


behind glove box!
Inspect/Replace 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 02, 2010 | 1994 Lincoln Town Car

1 Answer

Ac leaks inside the car where is the drain


drainging the water is probaly the least of your problems you probaly have a heater core problem even though it leaks with the ac on your heater core still particpates in the working of you ac.

Jul 11, 2010 | 1994 Oldsmobile Achieva Special Edition

1 Answer

I have leak near the heating core of my 94 olds achieva. Is there a drain there?


Yes. there is a drain for the a/c near the heater core connections. Water should drip from it when the a/c is running. But if the heater core is leaking, antifreeze will drip or run from this drain.

Jun 11, 2010 | 1994 Oldsmobile Achieva Special Edition

1 Answer

Repair heater core


how to installed a heater core on a 97 achieva

May 13, 2010 | 1997 Oldsmobile Achieva

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I would like to know what the heater hoses look like on my 1994 olds achieva


They look like black garden hoses, and there is 2 of them, inlet and outlet.

Nov 15, 2009 | 1994 Oldsmobile Achieva Special Edition

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Problems with locating heater core in 1997 oldsmobile achievea


U must remove the entire dash to service the heater core, once the dash is out then the heater core case must be split to get core out.

May 19, 2009 | 1997 Oldsmobile Achieva

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Smoke and antifreeze smell inside car


do you smell antifreeze? does it steam up windshield when defrosters are on? is there antifreeze on the floor. if your answer is yes to any of the questions i asked its heater core. the best thing to do is go to a web site of any major auto parts store they will have all the diagrams and instuctions you will need to do this.

Jan 23, 2009 | 1997 Oldsmobile Achieva

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1994 chevy olds achieva


THANK YOU BUT I HAVE FOUND IT , AND DID NOT HAVE TO PAY TO RECEIVE IT

Oct 05, 2008 | 1994 Oldsmobile Achieva Special Edition

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