Question about 2000 Cadillac DeVille DTS

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I have a 2000 cadillac deville dts and when i go to fuel up the car will take maby 5 bucks of gas and then it will begin to overflow if i anymore gas is put???? this just started 2 days ago and the car is not full with gas it overflows and wont take gas. i have bought seafoam to try and clean out the fuel system maby if it is blocked??

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  • Expert
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On your key is a diode. Ohm test it . Your ignition is expecting to see that ohm. You can try to reset it by turning key on( no crank) for 10 min. Then turn off and repeat a second time. Then try to start,might work. 2 options replace ignition ( not so cheap on this model) 2nd option ohm key and build resistor to match. On steering column there is an orange wire going from column to bottom corner of wire harness above drivers
left foot. Inside that orange wire are 2 white wires. Cut and wire in resistor to the white wires on harness side not column side. System bypassed, now you can make a dollar copy of key not the 50$ key from dealer and never have the problem again

Posted on Mar 14, 2015

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If you were to wait a few minutes and try to add more fuel, would it take it ? Sounds like the main vent for the tank is blocked.

Posted on Feb 10, 2014

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  • Jamal Mohamed
    Jamal Mohamed Feb 12, 2014

    i would have to wait longer than a few minutes before i can put more but it wont take much more than about the same around 5 buck worth of gas if im lucky before it just overflows again

  • Jamal Mohamed
    Jamal Mohamed Feb 12, 2014

    also if its the vent being block how can i unblock and fix the problem.

  • Tim cunningham Mar 14, 2015

    In the LR wheel wheel is your EVAP vent. Either it's stuck. You can remove and add power and ground while trying to blow through it. At rest it's open once grounded its closed. Also check air lines from it to canister for blockage. In the tank is a ball that needs to get release to allow fueling. If it can't vent to release you cant fuel

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Posted on Jan 02, 2017

emissionwiz
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SOURCE: Gas gauge is not reading correctly. Shows a full

the problem is caused by a defective gas gauge sending unit, this part is located inside the gas tank, you must remove the gas tank to replace it.

Posted on Dec 02, 2009

dennymulford
  • 1055 Answers

SOURCE: 2001 DTS Deville Overheating. Cant find leak.

if you have a blown head gasket you would have a miss
the waterpump can look good and still be bad
after you replace the thermostate fill the radiator and leave the cap off start the car let it get too operating temp and check for flow if you have good flow shut the car off and and put a pressure terter on the raidator this will tell of and leaks

Posted on Feb 26, 2009

jwyatt816
  • 3 Answers

SOURCE: 2000 Cadillac Deville DTS is in anti- theft mode

you can reset the system by turning key to on position for 5-10 mins and then try starting it but its probably a short or grounding prob try the engine to chassis ground

Posted on Oct 03, 2008

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2000 Cadillac Deville DTS


The stability control system is typically triggered by the abs system/connector sensor on your wheel hub bearing. If you haven't replaced your hub bearings on the front you may have one going bad. Cheap fix for a diy.

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Well, I don't think so. The pressure sensor will throw its own code (0450, 0451, 0452, 0453, or 0454). And likewise, the fuel level sender or sensor could also throw its own codes (P0460-P0464).

I'm not sure the level sensor and the pressure sensor are linked together. They are separate on a 2005 buick century, the pressure sensor being at the top of the tank located on the fuel pump module, but Cadillac: anything is possible.

Since you replaced the purge solenoid, there may be a problem in the circuit. The purge should have battery voltage to it with the key on. The ECM will ground the circuit internally when the purge is wanted. One symptom of a purge valve that isn't working or stuck closed can be a whooshing sound when the fuel tank cap is opened, indicating excessive pressure in the tank.
A shop's scan tool could be used to command the purge valve on to check it.

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Sounds like a timing issue. Same thing happened to me. Drove car to work, drove fine, went to go home and it just shook. Had to replace timing chain.

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1 Answer

Gas Overflow


Sounds to me like a bend/kink in your filler neck, or someone stuffed a rag down there.

Remove the fuel filler cap and run a long, rigid wire down your filler neck - if you encounter significant resistance, remove the filler neck from the tank and investigate further.

Feb 10, 2014 | 2000 Cadillac DeVille DTS

1 Answer

I have a 2000 cadillac deville dts and when i go to fuel up the car will take maby 5 bucks of gas and then it will begin to overflow if i anymore gas is put???? this just started 2 days ago and the car is...


More then likely it's a problem with the vent valve solenoid for the evaporative emission system .
Evaporative emission system

Image: pinstake.com
The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system. The EVAP system usually requires no maintenance, but faults can turn on the Check Engine light and prevent a vehicle from passing an OBD II plug-in emissions test. EVAP Evaporative Emission Control System - AA1Car.com
www.aa1car.com/library/evap_system.htm

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How do you check fuel pressure on 2000 deville


Put a fuel pressure gauge on the fuel rail fitting

That isn't the cause of the bucking.

Either EGR or Ignition issues

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