Question about 1988 Cadillac Sedan DeVille

2 Answers

88 Cadillac Deville cooling fan runs continuously

I own a 1988 Cadillac Deville that other wise runs great. My wife came home from work one night and parked it as usual but when she turned off the car she heard the engine cooling fans continue to run. We live in Wisconsin and it very cold out side so she thought it would quit as the engine cooled off. That is not normal for the fans to run when ever I turned off the car in cold weather. So later she went to start the car to run an errand and the battery which was bought new on 01/16/09 was completly dead. I put a battery charger on the battery and found that the fan ran as soon as the power was applied. Whats going on?

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 1990 Cadillac Fleetwood and the cooling fans will not shut off....what is the problem?

Posted on May 29, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,055 Answers

You have a bad fan swtich in the block or the therostat housing its an easy fix

Posted on Jan 26, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Engine fans run after car is shut off


it will do it will keep going till engine cools its surposed to do this it will shut when its cool , if it still does it after its cool then u need to replace temp sencor it on side of rad

Nov 08, 2013 | 1988 Cadillac Sedan DeVille

1 Answer

1996 deville runs then doesn't?


You need to find out what is missing when it won't start , spark - ignition system or fuel pressure . No Start Diagnostic Basics EricTheCarGuy

Apr 18, 2017 | 1996 Cadillac DeVille

1 Answer

My cadi 1988 is running ruff and quit running feels like over heating but no leaks, just smells


REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.MAKE SURE COOLANT NOT LOW.IF ALL IS GOOD CHECK FOR LEAKING WATER PUMP WEEP HOLE IF LEAKING REPLACE WATER PUMP.MAKE SURE COOLING FANS RUNNING.IF ENGINE RUNNING HOT WHILE SITTING LONG TRAFFIC LINE AND COOLANT NOT RUNNING.CHECK COOLANT FAN RELAYS AND FUSE.IF ALL IS GOOD HOT WIRE MAKE SURE COOLING FAN MOTOR GOOD IF COOLING FAN DONT RUN WHEN HOT WIRED FAN MOTOR BAD.IF FAN MOTOR OKAY AND FUSE RELAYS GOOD YOU HAVE FAULTY COOLING FAN WIRING.YOU COULD HAVE BAD ENGINE COOLANT SENSOR OR FAULT IN ECM CODE SCAN TO CHECK THEM BOTH.CHECK ENGINE OIL.LOOK LIKE MILK SHAKE YOU HAVE LEAKING HEAD GASKET.IF OIL LOOKS OKAY.YOUR ENGINE BLOCK, RADIATOR AND HEATER CORE NEED FLUSHING.

Sep 20, 2011 | 1988 Cadillac Sedan DeVille

2 Answers

88 deville wont shift into 3rd gear,im wondering if it is the pressure switch.


Possibly in a "Safe" or "Limp home" mode. If so, have a look at the wiring harness on the transmission. I'll bet that the seal around the lid on it is failing. Clean the harness up, and reseal the lid on. If this does not fix it, have a mechanic look at the shifter linkage.

Jan 07, 2010 | 1988 Cadillac Sedan DeVille

1 Answer

88 cadillac deville, ac blower fan wont shut off, even when car is turned off and key removed. I tried disconnecting the battery to reset the system but it still runs when battery reconnected. Also, car...


Ralph,
Most common cause of this is the blower fan (proper name for the fan you refer to) continuing to run is a shorted out Electronic Climate Control Module. This solid state device replaces the older style fan speed resistor block (at about 4 times the price) This unit is found on the top of the HVAC box under the hood. (HVAC means heating, ventilation and air conditioning) The HVAC box is found on the passenger side of the firewall. Look behind the A/C's accumulator. It will have an electrical wiring plug on top of it. It will be fastened to the HVAC box with a few 7mm hex head screws. Very easy to change.
FYI, do yourself a favor and replace the blower fan motor at the same time. The Electronic Climate Control Module usually fails because the motor is drawing to many amps of current. This is because it's bushings are worn out or the brushes are worn out.
This is very common on Cadillacs and Buicks.
Charlie
PS Not sure why car won't start. Either you drained the battery or blew a fuse which controls starting the engine. Need more info regarding the "no start" condition.

Jun 14, 2009 | 1988 Cadillac Sedan DeVille

2 Answers

Need a fuse box diagram to my 88 cadillac deville


try at your local auto parts store and see if they can order you a Haynes manual for your car or google the manual for your car.

May 30, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

Ac not working


Try unhooking the battery. These are good for setting a false low coolant code in the computer and shutting the whole system down.

May 16, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

'88 Camry AC buttons not working


fan speed controler could be bad, fan motor rellay could be bad.

Apr 14, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

Fuel gauge reads full most of the time want to no whats wrong


Replace tank sending unit an the trunk pull down switch. See gm dealer for diagrams!

Apr 12, 2009 | 1988 Cadillac Sedan DeVille

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

681 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

70347 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6876 Answers

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

Answer questions

Manuals & User Guides

Loading...