Question about 1999 Cadillac Seville

1 Answer

99 SLS overheating

Changed the coolant already and the cap on the resvoir still runs hot...could it be the ECT sensor..or the fan relay...one more thing...when the gauge is past the half way mark...once I start moving the gauge goes back to the half way mark ...so I think that it is the fan relay

thanks

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Check the fan motor had that problem make sure fans are working. 1 fan may be out and once u drive it cools engine down.

Posted on Jul 29, 2009

Ad

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 Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

Can either of these codes cause my 1999 Oldsmobile bravada SUV to over heat: P0442 ornP1361 or P0117??


code p 0442 refers to EVAP system so that is unlikely
check the fan operation and if you have a viscous fan hub ( fan clutch ) replace it
if you have electric fans , check coolant temperature sensor for operation , fuses , relay and fans
overheating is from low coolant levels , head gaskets/cracked heads, blocked radiator cores , fins flaking off core tubes, incorrect timing, blocked exhaust( cat converter)problem thermostat, over loading /over speeding, overdrive not engaging
if you over heating is predominately at lights , slow moving traffic or high engine rpms with low speed --check the fan operation and if it is viscous fan hub driven --replace the hub or if electric fans have that circuit checked out

Sep 07, 2016 | 1999 Oldsmobile Bravada

1 Answer

2000 daewoo leganza is overheating, leaking anti freeze, and water. what is wrong?


sound like thermostat sticking close.replace thermostat and radiator pressure cap.if already done.you could have faulty water pump.if engine overheating at long slow traffic line or setting at a stand still.the engine cooling fans should be running, check and see if cooling fans running if not,check cooling fans fuses and relays.if all is good,hot wire make sure coolings fans okay.if all is good,code scan vechicle for faulty engine coolant temperature sensor and ecm problems.you need a code scanner where you can check live data check see if coolant temperature sensor reading correctly if engine coolant temperature is 190 degrees the coolant sensor. the scanner suppose to show 190 degrees in temperature if not it reads 80 or 90 degrees the engine coolant temperature sensor is faulty need replacing.if all is good check engine oil if look like milk shake blow head gasket will cause over heating.to be on the safe side i would replace thermostat and radiator pressure cap first.to make sure engine coolant circulating through radiator and engine block.

Nov 15, 2011 | 2000 Daewoo Leganza

1 Answer

My 99 Honda Accords keeps overheating on and off when my car is on park or at a long stop. What can be the problem?


FIRST OF ALL I WOULD REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP THEN CHECK SEE IF COOLING FAN RUNNING.WHILE CAR OVERHEATING. IF NOT CHECK COOLING FAN FUSE AND RELAY.IF ALL IS GOOD THE ENGINE COOLANT TEMPERATURE SENSOR COULD BE FAULTY.HOT WIRE SEE COOLANT FAN WORKS IF NOT, COOLING FAN MOTOR BAD NEED REPLACING.IF COOLING FAN MOTOR WORKING PROBLEM COULD BE IN FAN MOTOR WIRING OR PCM FAILED.

Sep 20, 2011 | 1999 Oldsmobile Alero

1 Answer

I have a 1998 1/2 Lincoln Town Car. Yes, some of the parts were changed over that year, as to why I am saying 98 1/2 At any rate, the car is overheating. I have changed the thermostat and radiator cap,...


maybe your cooling fan isnot working, electric under the hood.

Can you hear it come on when ou turn a/c on? It should also come on when engine coolant temp sensor gets hot enough to tell the computer to turn it on.

So, check fan motor operation ECT Sensor operation, & a/c making cooling fan run too.

Aug 22, 2011 | 1998 Lincoln Town Car

2 Answers

Car runs hot after i changed waterpump&thermostat could it be fan or temperture sensor


Did you burp the air out of the system After replacing the parts? If not, you have air bubbles. Click my screenname and go to my tips & tricks - I did a writeup on how to do this.

Jul 11, 2011 | Ford Escort Cars & Trucks

1 Answer

Engine fan won't come on


IF COOLANT FAN FUSE AND RELAY OKAY.HOT WIRE COOLANT FAN TO SEE IF FAN MOTOR OKAY.IF FAN MOTOR OKAY.THE ENGINE COOLANT TEMPERATURE SENSOR MORE LIKELY BAD.THE ENGINE COOLANT SENSOR WHEN ENGINE COOLANT GETS HOT IT CAUSES ENGINE COOLANT TEMPERATURE RESISTANCE TO DECREASE CAUSE COMPLETE CIRCUIT IN WHICH POWER FROM PCM TO ECT SENSOR WILL SENT POWER TO COOLANT FAN RELAY THEN CAUSE COOLANT FAN TO TURN ON. HAVE ECT SENSOR OR ENGINE COOLANT TEMPERATURE SENSOR CHECK USING CODE SCANNER TO MAKE SURE ITS WORKING BEFORE SPENDING EXCESS MONEY.

Jun 18, 2011 | 1998 Ford Taurus

1 Answer

Overheating my car continuously overheat


CHECK FOR LOW COOLANT LEVEL AND REPLACE THERMOSTAT AND THE RADIATOR PRESSURE CAP.IF CAR OVERHEATING AND COOLING FAN NOT WORKING.CHECK COOLANT FAN FUSE AND RELAY.IF BOTH OKAY,HOT WIRE COOLANT FAN,IF FAN WORKS, PROBLEM COULD BE FAULTY COOLANT TEMPERATURE SENSOR,OR FAULTY PCM, IF COOLING FAN DONT WORK WHEN YOU HOT WIRE FAN.THE COOLING FAN ASSEMBLY NEED REPLACING.

Apr 22, 2011 | 1993 Lexus Es 300

1 Answer

Engine running hot


CHECK ENGINE COOLANT LEVEL.IF OKAY.CHECK BOTH RADIATOR HOSES BOTH SHOULD BE HOT. IF THERMOSTAT TOP HOSE NOT HOT YOU HAVE A FAULTY THERMOSTAT AND RADIATOR PRESSURE CAP IF RADIATOR HOSES HOT AND THERMOSTAT OKAY.IF ENGINE OVERHEATING WHILE CAR SITTING IN A LONG TRAFFIC LINE COOLANT FANS NOT RUNNING.THE COOLANT TEMPERATURE SENSOR IS BAD OR YOU HAVE FAULTY FUSE OR RELAY.THE FAN MOTOR DEFECTIVE, WIRES AT MOTOR HAS A SHORT OR PCM FAILURE DEAD DRIVE CIRCUIT TO FAN.

Sep 09, 2010 | Ford Thunderbird Cars & Trucks

2 Answers

'99 Kia Sephia overheats and coolant boils out...


rplace coolant temp sensor,and bleed all air out of coolant system ,fan relay checks and fuses check is good,,do fans run with ac on? if they do ,fuse and relay most likely ok but check relays any way

Jul 04, 2009 | 1998 Kia Sephia

1 Answer

99 honda odyssey coolant fans turn too late


You might need a new ECT - engine coolant temperature sensor. If it's not reading the correct coolant temperature it's not going to tell the fan to turn on when it should.

Is the check engine light illuminated? I'd bet the ECT needs replacement.

Dec 17, 2008 | 2002 Honda Odyssey

Not finding what you are looking for?
1999 Cadillac Seville Logo

Related Topics:

251 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 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

Loading...