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How to get the diagnostic codes on 1998 eldorado

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How do u run diagnostics at heater controlson caddy 1998 eldorado


Self-diagnostics. Off button and pass temp up button at the same time. All of the DIC and dash lights will illuminate. It will begin to cycle through DTC codes. You can use the fan up/down and the button next to it (dont recall which it is) to select and cycle through each menu. if you get stuck and dont know what to do, press the off button and it will exit you out.

Better yet here's a link to a forum thread that explains this procedure clearly. Just following the instructions. This is for a Seville but the procedure is the same. Good luck!

How To Pull Codes DTC

Mar 02, 2017 | 1998 Cadillac Eldorado

1 Answer

Have a 1998 cadillac eldorado, diagnostic codes are PO404 and PO307, what does that mean?


Code 404 is for a problem with the EGR valve and code 307 is for a miss on cylinder 7.
The egr valve would need to be tested, and the spark plug and injector checked out on cylinder 7.

Jan 10, 2013 | 1998 Cadillac Eldorado

1 Answer

My service engine light is on, took it was put on the machine and came back with the code po741 which was said to be a transmission problem. Took it to a transmission shop and was told that my...


Subject:
Service Engine Soon (SES) Light On, Diagnostic Trouble Code (DTC) P0741, Torque Converter Clutch (TCC) Excessive Slip, Transaxle Chuggle, Slip/Surge (Inspect/Replace Internal Transaxle Components) #04-07-30-034 - (08/06/2004)
Models:
1998-2002 Cadillac Eldorado
1998-2004 Cadillac Seville
1999-2004 Cadillac DeVille
2000-2003 Oldsmobile Aurora
there is a write up on this about 3/4 page down.

http://www.cadillacforums.com/forums/cadillac-forum/t-107360.html

Oct 25, 2010 | 2003 Cadillac Deville

1 Answer

Tune-up spark plugs and wires


not just a tune up or you want to fix misfire? need the diagnostic tool to determine the specific problem, if p0300 code appear, its not only spark plug and wire, cean the trottle body, iac, map, maf and the egr systems up to the fuel tank cap will be sure tight

Sep 12, 2010 | 1998 Cadillac Eldorado

1 Answer

How to read codes for 2001 Eldorado Cadillac


Take a look at your air con controls on the centre console.

You will see an "OFF" button and to the right of this you will see a toggle switch with an up arrow with the word "PASS" just below it.

Simultaneously press the "OFF" button and the up arrow together for three seconds or so and release when you see the instrument cluster lights come on.
You are now in diagnostic mode.
Read the codes from the digital display on the instrument cluster.
Have a pen and note pad ready to write down the codes.



May 18, 2010 | 2001 Cadillac Eldorado

1 Answer

My dashboard keeps reading traction disable it is a 95 cadillac eldorado


You have a trouble code in the ABS. You need to have it scanned for codes or you can scan it yourself with the onboard diagnostics. You likely have a bad wheel speed sensor.

May 02, 2010 | 1995 Cadillac Eldorado

1 Answer

I have a 1998 Eldorado. No electrical power


I had this problem with my 1999 eldorado. The problem was the alternator

Jan 18, 2010 | 1998 Cadillac Eldorado

1 Answer

Intermittent mis-fire, stuttering at cruise speed and


My 1998 Eldorado was doing the same untill i replaced the spark plugs, i would try that.

Apr 28, 2009 | 1992 Cadillac Eldorado

1 Answer

1998 cadillac eldorado cuts off while stoped at traffic light,


the engine may need some tuning, plugs and wires sort of thing also have the throttle body cleaned

Apr 02, 2009 | 1998 Cadillac Eldorado

1 Answer

1994 cadillac eldorado.will not idle.stalls out when stopping.when in part idles up and down


Sounds like a bad TPS or Idle Speed motor. You need to Scan it for codes. Cadilliac has on board diagnostics. Hold down the (off) and (warmer) buttons on the temp control until it goes into diagnosis mode. Then it will give you the codes right on the dash. Turn the key off to exit diagnosis mode after you write down the codes. Then google the codes.

Mar 06, 2009 | 1994 Cadillac Eldorado

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