Question about 1989 Cadillac Eldorado

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Digital dashboard I recently had my ignition fixed on my cadillac, now my fuel data is stuck on metric. how do i get it back to reading gallons?

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Try pressing the button on your middle console computer that is located all the way to the right. let me know if that works. at cchacon26@hotmail.com

Posted on Mar 03, 2009

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Posted on Jan 02, 2017

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1997 Cadillac Eldorado fuel gauge not reading fuel level correctly


Did you test before replacing ? Do you know how it work's ?

Fuel Level
The body control module (PZM) monitors the fuel level sender input in order to determine the current fuel level. The PZM filters the input and sends a message via the Class 2 serial data line. The IPC receives this message and displays the current fuel level. The fuel level is sent from the PZM to the IPC at changes of 0.5 L (0.02 gal) or on the request of the IPC, with a resolution of 0.04 L (0.01 gal).
• For the digital IPC, when the fuel level is above 18.5 gal, the IPC displays an F. For readings between 18.5-2.5 gal, whole gallon/liter numbers are displayed. When the fuel level reaches 3.0 gal the message FUEL LEVEL LOW is displayed on the driver message center. When the fuel level reaches 2.5 gal, the IPC displays an E. When the fuel level is 1.2 gal or below the IPC displays a flashing E.
• For the analog IPC, when the fuel level is above 18.5 gal, the fuel gauge pointer is on F. When the fuel level is below 2.5 gal the fuel gauge pointer moves to E. When the fuel level is below 3.0 gal the IPC displays a FUEL LEVEL LOW message.
If the updates are not received or a communication error is detected, the IPC performs the following actions:
• For the digital IPC, the fuel gauge is dashed.
• For the analog IPC, the fuel gauge pointer moves to E.

Fuel Gage Inaccurate or Inoperative
Circuit Description
The IPC monitors the fuel level sent by the PZM through the class 2 serial data line. The IPC software controls one of the following two gauge types:
• A digital gauge consisting if a two-digit numeric seven-segment display
• An analog gauge consisting of a needle pointer.
The IPC interpolates and scales the fuel level information that the IPC receives from the PZM.
When you operate the vehicle in diagnostic mode, either in the vehicle diagnostic system or with a scan tool connected, the fuel signal supplied to the IPC is not filtered by the PZM. The unfiltered fuel signal causes the IPC to show real time readings and may be mistaken as an erratic fuel level display.
Diagnostic Aids
Connect a scan tool to the DLC.

Oct 12, 2017 | Cadillac Cars & Trucks

1 Answer

My 1996 Cadillac Deville Concours electronics has gone crazy! The fuel gage is reading 58 gallons, the odometer mileage reading added 100,000 miles and wacky dashboard readings. What is the cause?


You must have ground something out on your car. Try disconnecting you negative battery cable and letting it sit about 15 minutes before re-connecting it. It may or may not help depending on how serious the damage is.

Nov 23, 2016 | Cadillac Cars & Trucks

1 Answer

Recently replaced the fuel filter and the fuel pump on my car and ever since it has to read that there is at least 8 gallons of gas in it or it dies out when im coming to a stop what can it be?


I've seen this problem before. If the fuel pump assembly was bumped in the replacing procedure it's very possible that the fuel gauge sending unit was damaged. Those things are extremely sensitive unlike most GM cars and trucks. Cadillacs are very touchy vehicles to work on unfortunately.

Apr 09, 2015 | 1992 Cadillac DeVille

1 Answer

My 1990 Deville reads fuel in Liters, and temp in degrees C, how can I correct this?


If you have the digital dash the button marked E/M changes it from english to metric and back.

Dec 08, 2012 | 1990 Cadillac Deville

4 Answers

How many miles do u get for a full tank of gas on a v8


It just depends on your tank size. You probably get about 15 -18 miles per gallon. 13 gallon tank would be around 200 miles. 15 gallon tank around 232 miles.

Mar 06, 2011 | 1997 Cadillac Eldorado

1 Answer

I have a 1987 cadillac deville with apoox 85000 miles on it fuel pump went out I drop the tank and replaced the pump. I can not get a proper reading on the fuel guage (digital) I have taken the gas tank...


your problem is definately in the fuel sending unit..thats all it can be, either that or the float arm is losing contact on the slider... thats all it can be.

Dec 06, 2010 | Cadillac DeVille Cars & Trucks

1 Answer

My fuel gauge reads liters how do i change to gallons 1988 cadillac seville


There isa button on your Info display center next to the fuel reset button that changes from lires to gallons.

Jul 07, 2010 | 1988 Cadillac Eldorado

2 Answers

How do you change the instrument panel back to English ?


Try pressing the tripometer reset button in rapid hits, watch for your language setting to come up.

I hope this help you.

Thanks for letting FixYa.com...fix ya


Terry

Sep 14, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

91 deville fuel gauge flashes "E"


It seems that you are low on fuel based on you saying 70 miles in the range gauge. If this problem does not happen with 3 gallons of fuel or more then it is normal. The range is calculated on your average MPG and gallons of fuel in the tank. When the car gets to around 2 gallons it does not chance miscalculating your miles to empty and leave you on the side of the road. At this point he tank will read "E" to let you know it is time to fuel up. The flashing "E" is simply cadillac's way to get your attention that you are in fact low on fuel and need to take action. Hope this helps.

Nov 02, 2008 | 1991 Cadillac DeVille

1 Answer

90 cadillac deville fuel data


Under neath the steering colum there is a grey plug that your probably plugged in, unplug it and it should turn back the English

May 23, 2008 | 1989 Cadillac Eldorado

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