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What makes my 1998 cadillac de ville have acceleration problems

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If there is a "service engine soon" light on, have the codes read by an auto parts store and determine the fix. If no light, determine if the lack of acceleration is accompanied by missing like misfiring spark plugs. Bottom line in my opinion is no acceleration is either a lack of fuel, or failure of the spark advance..

Posted on May 07, 2014

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Posted on Jan 02, 2017

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SOURCE: 99 cadillac de ville

the coolant temp sensor is at the rear of the engine and is a "bad word" to get to. the 3 relays are at the bottom,under the fans. if you remove the driver side fan out of the way( 2 10mm bolts holding the fan) you should have good access to them. they do have locks on them and may be tricky to unplug. there is a 7/16 nut holding the relay plate down. remove and it should be easy to remove them.

Posted on Jul 09, 2008

knotbeerdan
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SOURCE: Turn signal flasher fuse location

it is normailly the big round thing in the fuse panel on the driver side under the dash by where your feet go

Posted on Dec 30, 2008

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SOURCE: I need a picture/or diagram of the serpentine belt

I need a diagram of how to replace a serpentine belt on a 1998 Calilic 4.61 north star engine

Posted on Jan 13, 2010

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SOURCE: Show routing diagram for serpentine belt for a

CLICK on the following LINK. It has all the Diagrams for your Belt that you will need.
If you would: Before Clicking let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Thanks!

http://www.2carpros.com/car_repair_information/year/1994/make/cadillac/model/deville/1994_cadillac_deville_drive_belt_routing_diagram.htm

Posted on Feb 28, 2010

Kravcar
  • 192 Answers

SOURCE: what is the correct temp on a 1998 Cadillac DE

The normal coolant temp should be around 200-215 degrees.
The cooling fans will come on at around 225-228 degrees.

The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.

Posted on May 22, 2010

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Would you buy a 1998 Cadillac De Ville with 115,000 miles what would you pay


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What is the correct temp on a 1998 Cadillac de ville my cadillac is not should me the correct temp in my gate and is overheating.


The normal coolant temp should be around 200-215 degrees.
The cooling fans will come on at around 225-228 degrees.

The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.

May 12, 2010 | 1998 Cadillac DeVille

1 Answer

What is the correct temp on a 1998 Cadillac DE ville my cadillac is not should me the correct temp in my gate and is overheating.


Before you do anything, have the engine teperature checked out using an accurate thermometer or thermocouple. Gauges are not always reliable and at best are only ever an approximate indicator. If the engine is actually overheating, check your thermostat first. Next check if the top radiator hose is hot and the bottom hose cold. If this is the case, your radiator may require flushing. The bottom hose should be cooler that the top, but not cold.

Mar 20, 2010 | 1998 Cadillac DeVille

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I need a picture/or diagram of the serpentine belt routing on a 1998 Cadillac 4.6l north star engine. Car is a De ville


I need a diagram of how to replace a serpentine belt on a 1998 Calilic 4.61 north star engine

Dec 22, 2009 | 1998 Cadillac DeVille

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Access to odd numbered spark plugs on North-Star V8


To gain access you have to remove the ignition coil pack. There are only 4 10mm bolts holding it on. Also remove the cross over to have more room.

Oct 31, 2009 | 1998 Cadillac DeVille

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1994 Cadillac De Ville acts like vaporlock


change fuel filter and check fuel pressure.sound like low fuel pressure problems.

Jun 07, 2009 | 1994 Cadillac DeVille

1 Answer

Trunk will not close all the way.


Go to the dealer and purchase a trunk pull down switch. Put it on and fix car.

Apr 23, 2009 | 1998 Cadillac DeVille

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