Question about Cadillac DeVille

1 Answer

Need assistance on how to change ac evaporator on 1998 cadillac deville

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert that has over 500 points.

  • Expert
  • 277 Answers

1. Evacuate the whole system, having connected the HIGH pressure coupler to the corresponding nipple on the Pipework, until there is a Vacuum reading of at least 10. for a minmum period of 5 minutes. If a Vacuum cannot be achieved, and maintained, you have an additional fault in the Pipework lines, pipework joints, [ Seals ] and or Compressor pulley seal.
2. Using the correct size wrenches, disconnect both the Supply and Outlet main pipes. So as not to damage the pipework couplings, use 1 tool to secure the Evaporator, and the other to unlock the joint. When the joint "Breaks", there will be a slight "Shoosh" as the Vacuum is replaced by atmosphere.
3. Remove the Evaporator from the vehicle.
4. Unpack the new Evaporator, and install a New Emulsion Tube correctly, and install it complete, into the vehicle, mounting it initially loosely.
5. Clean the Thread ends of both Main Hoses, and install NEW seals on both, and connect the 2 pipes to the unit, and secure everything.
6. Evacuate the system again to remove any Atmosphere, for the same conditions, that applied in 1 above.
7. Ready the system from, Evacuate to Charge.[ Do not let any atmosphere back into the system ]
8. Having purchased the correct Freon, with Lubricating OIL added, load the correct amount of Freon into the system, opening only the HIGH pressure control.
9. Shut Off the charge valve, and start the engine.
10. Select Cold, on the heating coolant control, Maximum on the A/C control, and High speed on the blowers, and this should engage the A/C Compressor clutch drive, in the centre of the Compressor pulley drive.
If you have done everything correctly, and there are no other faults, the system should function as normal.
You will need additional tools to do your own A/C repair.
1. A Freon Suction Pump, which needs a Compressed Air supply.
2. A set of A/C gauges.
3. An adaptor to connect the Freon supply to the Gauge set, High pressure service line.
4. Altenately, do all your own change over, and then take the vehicle to an A/C repairer, to Evacuate and Recharge the System for you.

Posted on Mar 22, 2011


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Where is the oil filter on 1998 Cadillac deville

Hidden underneath! See the video

Cadillac DeVille Oil Filter - Best Oil Filter Parts for Cadillac DeVille > ... > Cadillac DeVille Oil Delivery
Order Cadillac DeVille Oil Filter online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.

1999 Cadillac Deville Oil Change How to - YouTube

? 8:01
Jan 28, 2017 - Uploaded by Arches Mechanic
Help support the channel on Patreon! Here is an in depth video on ...

Cadillac Deville 4.6 L Northstar Engine Oil Change - YouTube

? 10:03 Nov 15, 2013 - Uploaded by John Dobis
Cadillac Deville 4.6 L Northstar Engine Oil Change .... I have a 1998 Cadillac deville can I change my oil ...

1998 CADILLAC DEVILLE 4.6L V8 Oil Filter ' RockAuto,1998,deville,4.6l+v8,1313763,engine,oil+filter,53...
RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Easy to use parts catalog.

1998 Cadillac Deville change oil filter Google Search

May 26, 2018 | Cadillac Cars & Trucks

1 Answer

Need help on how to replace a evaporator on 1995 cadilla deville

Replacing the AC evaporator is a job best left to a service shop. It will involve recovering the refrigerant, cleaning the system and ports, checking sensors, checking the system for leaks and recharging the system.

Mar 10, 2015 | 1995 Cadillac DeVille

1 Answer

How do you replace an ac compressor on a 1998 cadillac deville?

If you click this LINK you will be taken to a pdf file of the whole job.

May 21, 2012 | 1998 Cadillac DeVille

1 Answer

How do i reset the change oil light after the oil and filter has been changed on my 1998 cadillac deville?

Try this procedure;

1. Turn the ignition key to the "On" position, but do not start the engine.

2. Press the "INFO" button until "ENGINE OIL LIFE" is displayed.

3. Then press and hold the "INFO RESET" button until "100" is displayed.

4. Turn the ignition key to the "Off" position.

5. Start the vehicle and confirm that the oil life has been re-set.

Let me know if this procedure did not work, or if you require any further assistance.

Nov 23, 2010 | 1998 Cadillac DeVille

1 Answer

Where is the fan relay switch for a 1998 cadillac deville

If for the heater it is a blower module on top of the evaporator core housing. If for the cooling fans it is inside the front fender behind the headlights. That is a module also tice the size of a normal fist

Jan 29, 2010 | 1998 Cadillac DeVille

1 Answer

Did the 1998 come without A/C from the factory?

No, all the Deville models came with AC

Nov 18, 2009 | 1998 Cadillac DeVille

1 Answer



Jul 04, 2009 | 1999 Cadillac DeVille

1 Answer

I have 1998 cadillac STS and the heater blows cold air only

this problem is caused by a defective air temp control blend door motor, this door and actuator motor is located inside the dash between the heater core and the AC evaporator core, it shifts airflow through the heater core or the AC core or mixes or blends the two for the desired temp at the outlets, the motor will have to be replaced. This is a very common issue.

Jan 21, 2009 | 1998 Cadillac DeVille

1 Answer

1998 cadillac deville reads service ac system

Hi,check if the compressor clutch is engaging,if not check the conection at the compressor if ok check,fuse ,or relay ,if those are fine and the commpressor is engaging,check freon presure ,may be too high or low, if this is the case ,correct the problem and disconect the negative cable from the battery for a minute to reprogram the sistem..C1

Jan 04, 2009 | 1998 Cadillac DeVille

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts


Level 3 Expert

80637 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides