20 Most Recent 2000 Cadillac DeVille DTS Questions & Answers

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

Electrical

• because your driving long and not often
• your driving short distance slowly
• you go vacation to much

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.

Does the exhaust smell sweet -like ? Do you see steam after the warm-up period ? Its a Northstar engine ? That stuff doesn't just dissapear .. there something loosing it... How do you know theres no head issues ? Head gasket leaking into a cylinder, they are famous of that kinda stuff ...

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.

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.

alldata.com login read there. the FSM and above are organized by JOB. (unstated, job) what are you FIX'n?

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.

The stability light uses the same sensor as the abs system . I would be checking out the wheel bearing adjustment as the disc may be touching the sensor causing a problem

DeVille, Eldorado, Seville 1999-2005

• REMOVAL & INSTALLATION

Cylinder Head

Print

Removal & InstallationLeft Side

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the cooling system.
3. Properly relieve the fuel system pressure.
4. Remove or disconnect the following: Negative battery cable Exhaust manifold Alternator Water crossover Intake manifold Valve cover Timing cover Secondary camshaft drive chain Power steering return hose retaining bolt from the cylinder head 3 M6 external drive bolts from the front portion of the cylinder head 10 M11 internal drive cylinder head bolts Cylinder head and gasket.
5. Clean the head mating surfaces.

To install:

Fig. Left cylinder head bolt torque sequence-4.6L engine

1. Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
2. Torque the M11 bolts in sequence as follows:
   1. Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees
   2. Step 2: Turn an additional 60 degrees
   3. Step 3: Turn an additional 60 degrees (total 190 degrees)
3. Torque the M6 bolts to 106 inch lbs. (12 Nm)
4. Install or connect the following: Power steering return hose retaining bolt to the cylinder head and tighten to 37 ft. lbs. (50 Nm) Secondary camshaft drive chain Timing cover Valve cover Intake manifold Water crossover Exhaust manifold Negative battery cable
5. Change the oil and filter.
6. Fill the cooling system.

Right Side

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the cooling system.
3. Properly relieve the fuel system pressure.
4. Remove or disconnect the following: Negative battery cable Exhaust manifold Water crossover Intake manifold Valve cover Timing cover Secondary camshaft drive chain Electrical connector from the Engine Coolant Temperature (ECT) sensor Nut attaching the coil cassette ground wire to the cylinder head Bolt attaching the exhaust crossover pipe to the cylinder head Bolt attaching the right transaxle mount bracket to the cylinder head Bolt attaching the rear transaxle brace to the transaxle Nuts attaching the rear transaxle brace to the cylinder head Rear transaxle brace 3 M6 external drive bolts from the front portion of the cylinder head 10 M11 internal drive cylinder head bolts Cylinder head and gasket
5. Clean the head mating surfaces.

To install:

Fig. Right cylinder head bolt torque sequence- 4.6L engine

1. Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
2. Torque the M11 bolts in sequence as follows:
   1. Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees.
   2. Step 2: Turn an additional 60 degrees.
   3. Step 3: Turn an additional 60 degrees (total 190 degrees).
3. Torque the M6 bolts to 106 inch lbs. (12 Nm).
4. Install or connect the following: Rear transaxle brace over the studs located at the rear of the right cylinder head Nuts attaching the rear transaxle brace to the cylinder head, loosely Bolts attaching the rear transaxle braces to the transaxle and tighten to 37 ft. lbs. (50 Nm) Nuts attaching the rear transaxle brace to the cylinder head and tighten 37 ft. lbs. (50 Nm) Electrical connector to the ECT sensor Bolt attaching the exhaust crossover pipe to the cylinder head and tighten to 18 ft. lbs. (25 Nm) Nut attaching the coil cassette ground wire to the cylinder head and tighten to 13 ft. lbs. (17 Nm) Secondary camshaft drive chain Timing cover Valve cover Intake manifold Water crossover Exhaust manifold Negative battery cable
5. Change the oil and filter.
6. Fill the cooling system.

Some vehicles have a reading that starts at 100% and Counts down to ZERO. If your gauge is telling you that you are at 50% life, then you have 1,500 to 2,500 miles left before your engine oil change. This is ONLY as good as the last time you changed your Oil and someone RESET IT...If it was not reset, follow the Tag on your Windshield

This is some help here https://www.google.com/search?q=1961+Cadillac+Fleetwood+390c+vacuum+line+diagram ..

Are you sure the engine is not grounded? Could be the starter relay. To make sure it is not a ground problem use a battery jumper cable and connect the engine to the negative battery post. Also make sure the battery did not lose its charge while working on the belt. Possible key left on.

2000 Cadillac Escalade Stereo Wiring
Constant 12V+ Orange
Switched 12V+ Yellow
Ground Black
Illumination Gray
Dimmer Brown
Antenna Right Front
Front Speakers 6 1/2" Doors
Left Front (+) Tan
Left Front (-) Gray
Right Front (+) Light Green
Right Front (-) Dark Green
Rear Speakers 6 1/2" Rear Doors
Left Rear (+) Brown
Left Rear (-) Yellow
Right Rear (+) Dark Blue
Right Rear (-) Light Blue

question edited for clarity and typo. https://www.google.com/search?q=1984+cadillac+seville+fuel+pump+wiring+diagram Service Manual https://www.google.com/search?q=1984+cadillac+seville+service+manual ..