Question about 2001 Cadillac DeVille

1 Answer

2001 Cadillac Deville/ Northstar engine overheating when A/C is engaged!

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,272 Answers

The car overheats when AC is turned on.This indicates there is coolant leak or AC low on refrigerant. Get the AC pressure test done.This will confirm if its low or leak.Also get the coolant temperature sensor checked.The thermostat and the radiator.If the radiator cap is loose or releasing any pressure the car will heat when ac turned on.The radiator cooling fan.Check out if the fan turns on when engine reaches at particular temperature,if not then this fan is faulty.The other thing you should look at is a restriction of air flow through the A/C evaperator and the radiator.If there is debris between the evaperator and the radiator then this can be one reason for car getting overheated.Clean the debris get the ac serviced.

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Sep 16, 2010

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 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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

PICTURE OF PURGE LINE DIAGRAM FORTHE COOLANT SYSTEM OF A 2001 CADILLAC DEVILLE DHS ENGINE


There are a lot of coolant lines around the Northstar engine, but not one called a "purge line" that I am aware of. The coolant system is designed to be a closed system, and is never purged.

However, there is a rubber drain line on the pressurized overflow tank that will release coolant on excessive pressure sensed by the rad cap on the tank, or if the rad cap is faulty. If the system has a leak anywhere, it will not hold required pressure and that will always cause overheating. If you are losing coolant, that is the first place to look (bad rad cap, or cracked tank or line from the tank to the rad).

Oct 22, 2016 | 2001 Cadillac DeVille

2 Answers

Are there any major problems with the Northstar 4.6L v8 2005?


Ours was delivered new with a cracked block. Was fine after replacement.

Sep 30, 2015 | Cars & Trucks

1 Answer

Have a cadie 01 changed water pump and thurmostat and still over heating and running hot any ideas


Try to flush and fill with new fluid to get the passageways free of sediment.

Or, try to see if the fans are coming on at the right speed at operating temperature. May require new fans/relays/wiring to fix this problem.

I have a 1997 Cadillac Deville that was overheating its Northstar engine and it required service amounting to about $700.00 or so from an auto electric shop, but afterwards it ran cooler.

Good luck on this repair.

Feb 05, 2011 | 2001 Cadillac DeVille

1 Answer

Where is the starter on a 2001 Cadillac deville, with a V8 Northstar engine?


Inside the intake manifold. I been working on it since yesterday to replace it and im almost there, but its a big job.

Nov 09, 2010 | 2001 Cadillac DeVille

2 Answers

When does the timing belt need to be changed on a 2001 Cadillac Deville with a Northstar engine?


The northstar engine uses chain driven cams that eliminates the need to replace timing belts.
Thank you and enjoy,
Lee

Aug 09, 2010 | 2001 Cadillac DeVille

1 Answer

I have a 2001 cadillac deville and the temp gauge creeps past the half way point, mainly when sitting and kicks back down to half way.... is this normal?


this cna be normal. The Northstar engine has design issues that manifest as overheating problems, but mainly under hard accelleration...
What you describe sounds like normal fan cycling...are the fans going on and off?

May 30, 2010 | 2001 Cadillac DeVille

2 Answers

Diagram of cadilac northstar engine exploded view of a cadilac northstar engine


need 1998 northstar engine diagram to change the head gasket thanks

Sep 30, 2009 | 2001 Cadillac DeVille

1 Answer

Problem with overheating on 1996 Cadillac Deville with Northstar engine. The information screen read "engine overheating", "idle engine" and "change oil" all within one minute. Are these issues related...


The oil life resets to zero after the engine overheats. Check for external leaks first, make sure the water pump belt is still there and turning. The most likely cause if the car has over 70,000 miles is head gaskets.

May 18, 2009 | 1996 Cadillac DeVille

1 Answer

Overheating,eveything looks ok.


I have a 97 Cadillac Deville with a northstar engine and have replaced it twice so far, so i answer this by experience...i've noticed to my two prior engines that went bad that the normal temp should NOT EXCEED 228 (normal), the red overheating light will come on at 250 and at 260 it will beep and tell you to stop engine - idle engine and will begin to smoke (overheat).

I hope this helps you and anyone else...by the way if your asking why did i replace my engine twice is simply because my cadillac is super clean inside and out, immaculate condition.

Apr 15, 2009 | 1997 Cadillac DeVille

1 Answer

Replaced water pump. thermostat. radiator, filled with dex col, still overheating This is a 2001 Cadillac Northstar engine


Try backflushing,if this doesn't solve the problem,..then it could be the distributor,they can make the car run hot if the are going out.

Apr 08, 2009 | 2001 Cadillac DeVille

Not finding what you are looking for?
2001 Cadillac DeVille Logo

Related Topics:

537 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

76682 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

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

Answer questions

Manuals & User Guides

Loading...