Question about 1989 Cadillac Sedan DeVille

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How do I adjust the idle on my 89 Cadillac Coupe Deville? (Fuel injected v8 4.5 liter)

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  • Cadillac Master
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Computer controlled fuel injected vehicles from GM don't have user adjustable idle speeds. The computer controls this.

Posted on Jul 16, 2010

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Posted on Jan 02, 2017

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Please help; my Cadillac Concours 1995 use fuel ? tooooooooo much in 100 km use ? 35 liters (9 gallons) without any smoke or missing. What is problem and how can I fix it????


Cadillac DeVille Mileage ' Fuelly

www.fuelly.com > Cars > Cadillac
There are 53 Cadillac DeVilles with reported gas mileage parked at Fuelly. ... Any Submodel, d'Elegance (1), DTS (1), Concours (2), DHS (4), Base (13), Other (32) ... 4 Vehicles; 27 Fuel-ups; 5,215 Miles Tracked; View All 1995 Cadillac DeVilles ... 2 Vehicles; 9 Fuel-ups; 1,664 Miles Tracked; View All 1991 Cadillac DeVilles.

Used 1995 Cadillac DeVille Features & Specs - Edmunds.com

www.edmunds.com > ... > DeVille > 1995 DeVille

Edmunds.comFeatures and specs for the 1995 Cadillac DeVille including fuel economy, transmission, warranty, engine type, cylinders, drive train and more.Missing: 100km

Cadillac history 1997 - Motorera

www.motorera.com/cadillac/cad1990/1997/cad97d.htm
History of Cadillac automobiles for 1997. ... 1997 CADILLAC DEVILLE ... Fuel Economy City/Hwy, 13.8 l/100 km - 9 l/100 km (20.4/31.2 mpg-imp) (17/26 mpg US).

Jan 25, 2016 | Cadillac Cars & Trucks

1 Answer

Where is the idle control valve on the 1999 Cadillac De Ville and is it the same thing as the idler motor?


The IAC or idle air control valve is mounted in the throttle body and uses an air passage that opens or closes to increase idle speed where as an idle motor usually pushes against the throttle plate to increase idle speed most idle motors (stepper motors) where phased out and was never used on port fuel injected engines chances are you have an IAC valve

Dec 11, 2012 | 1999 Cadillac DeVille

1 Answer

High idle on an 84 cadillac coupe deville


most likely a bad throttle position switch or an vaccum leak. try spraying all hoses and the intake with carb clean if the rpms change that object needs to be repaired

Aug 28, 2012 | 1984 Cadillac DeVille

1 Answer

Idle surges up and down on 1984 cadillac coupe deville


I A C motor small part on throttle body ,controls idle mixture when they fail at idle the engine "hunts" for proper air/fuel mixture . when defective it causes o2 sensors and TPS to compete to set an idle thus the up n down effect.. auto wreckers if your broke new from your local parts store....dealer to much 1 plug in two bolts for most applications

Feb 06, 2012 | 1984 Cadillac DeVille

1 Answer

Is there a fuse for alternator 89 coupe deville


Yes, it is located in a power distribution center under the hood-large fuse, rated at 80 amps.

Jan 28, 2011 | 1989 Cadillac Sedan DeVille

2 Answers

Explain easiest wAy to remove the starter off of 1989 Cadillac deville


here you go hope it helps Tim:

http://www.ehow.com/how_5100688_change-starter-cadillac-deville.html

Oct 16, 2010 | 1989 Cadillac Sedan DeVille

1 Answer

My 1993 cadi deville keeps flooding. gas fills-up in carbator when I turn key on. What's this?


first, the 1993 cadillac deville should have a throttle body not a carburetor. And, I think it has ported fuel injection to each cylinder with a fuel injector for each cylinder if it's like my 1990 Cadillac Deville.

Jun 20, 2010 | 1993 Cadillac DeVille

5 Answers

Find free online repair manual for 1989 cadillac deville


i have a 1989 cadillac deville 2 door front wheel drive i just changed the fuel filter in it and i pour fuel injection cleaner in the gas tank. when i pour gas in the carberator it gives a little start to the car and it started the car but it wont stay on. i just bought a new battery for it but i havent tried it out yet just because the positive wire going to the battery was bad so i cut the wire and gonna put a new wire for it do you have any suggestions what is wrong with it. it has been sitting for a couple years.......and it does start it just turns over......

Aug 29, 2009 | 1989 Cadillac Sedan DeVille

1 Answer

Engine/Chassis Specs '94 DeVille


but what's the VIN "B" ?

VIN B refers to the engine identification , the eighth digit in the VIN Code , if the eighth digit in the vin is B it identifies the engine as being a 4.9 liter V8 port fuel injected engine .

Jan 07, 2009 | 1994 Cadillac DeVille

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