Question about 1998 Cadillac Eldorado

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

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  • Cadillac Master
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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.

Posted on Jan 10, 2013

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Posted on Jan 02, 2017

  • 373 Answers

SOURCE: can i reset my ac code? 1999 cadillac eldorado

Hi, follow this step for clear the a/c codes on your cadillac el dorado 1999.
I Hope you will solve your problem with this instruction page, thanks for using fixya.1736984.jpg

Posted on Jul 07, 2008

  • 45 Answers

SOURCE: location starter on 1998 cadillac eldorado northstar engine

well some people like where it is and some don't! i do on my 1997!, i assume u have a 4.6 engine? if u do the starter is under the intake manifold,on a 4.9 engine it is under the car on the left side facing the car, these can be a paine.,go to your local auto supply store and pick up a auto repair manual for your car,by Haynes,good book to own. the 4.6 starter is not that bad to tackle,hope we helped and good luck to u.

Posted on Mar 09, 2009

  • 10865 Answers

SOURCE: 1998 Cadillac STS with IPM U1255 code history.

U1255 - Class 2 Communication Malfunction (Serial Data Line Malfunction)

here is a link to all of the codes for your caddy
http://myweb.accessus.net/~090/dtcobd2n.html#net

Posted on Aug 20, 2009

  • 921 Answers

SOURCE: digital dash reads out low coolant and runs hot.

it means just what it says..your low on engine coolant and that is causing it to run extra hot...this is not good! let car cooldown and take radiator cap off have a look inside with a flashlite..water level should be almost up to the filler neck. if you have the red dex-cool you"ll have to put in the same its not recomended to mix the green and red. if it doesnt your in luck just fill up a jug or get a garden hose and fill it up to the top if its low. leave cap off for now and put some water in the coolant tank if its empty only about halfway dont overfill. now start the engine and let it warm up for about a minute and see if the water level goes down if it does add a little more water up to the neck, now turn off the engine and let it stay like that for another minute to make sure trapped air can get out. Now put back on the cap. Now go for a 10 min drive around town and then see if the warnings have cleared and its running at a normal temp range. also park in a new locating so after you turn your car off you can check to see if its go a slow leak overnight.

Posted on Apr 03, 2010

Kravcar
  • 192 Answers

SOURCE: 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.



Posted on May 23, 2010

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1 Answer

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

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Hi please tell me what is the code po80 and po52 and p071 and T037 and S030 in cadillac devill 1995


AWH: Cadillac On-Board Diagnostic Trouble Codes (OBD)

z-cut.de/US/dtcobd1.html
Diagnostic Trouble Codes for OBD I equipped General Motors (GMC, ... BCM Codes; ECM Codes; PCM Codes; IPC Codes; ABS Codes; SIR Codes ..... LR Wheel Speed Sensor Frequency Error T037 . ...... Intermittent TPS Signal P071 (E071) . ..... NOTE: The part numbers listed above are for the Cadillac Deville, Eldorado ...

Lightbulb Re: How can I check for any codes Im throwing ...

www.cadillacforums.com > ... > Past Cadillac Vehicle Discussion

Jan 28, 2004 - 11 posts - ‎8 authors
I heard that if you hold temp and off, it will show you the codes you are throwing. ...Cadillac DeVille 1985 to 2005 including: ... Diagnostic Trouble Codes for OBD I equipped General Motors (GMC, Chevrolet, Buick, Oldsmobile, .... T037 .......... .............................. LR Wheel Speed Sensor Continuity Fault T041 .

Trouble Code Help???? OBD1 Codes, 1993 GM Cadillac El Dorado ...

www.cadillacforum.com > ... > General Technical Section > General Tech
Nov 30, 2007 - I retrieved these codes : PO31, PO52, PO53, PO91, IO39, IO52, AO48 they had History behind them but Iwant to know what these mean and are ...

Jan 19, 2016 | Cadillac Cars & Trucks

1 Answer

My 98 Cadillac Eldorado says to check fluid but has fluid?


oil? coolant? transmission? wiper ? could mean a variety of fluids may want to double check all

Feb 13, 2011 | 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

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

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

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