20 Most Recent 1994 Cadillac DeVille - Page 3 Questions & Answers

If it is a 4.9L it is NOT a Northstar Engine, The 4.6L Engine WAS A Northstar. Both Engines were available until 1996.

Well you can search for "1994 cadillac deville engine codes" and you'll find something. I did...and I found several hits. And yes some codes can trigger or cause others to appear. Good Luck!

code p 0030 refers to heated oxygen sensor (HO2S) 1 bank 1 -heater control-circuit malfunction code p 0039 refers to turbo/super charger bypass valve , control circuit --range /performance problem===causes --wiring--- bypass valve code p 74 refers to outside air temperature sensor--circuit intermittent===causes ---wiring---poor connection---out side air temp sensor---ECM code p 0098 refers to intake air temp (IAT) sensor 2 --circuit high input===causes --wiring short to positive ---IAT sensor---ECM

The idle air control valve is dirty or defective.

the fan relay is stuck i beleive it is by the battery

Disttributor is bad had same promblem..........

Most likely have have worn parts in your front suspension that need to be replaced. Take your car to an alignment shop, they can fix it for you.

Is there battery voltage at the bigger gage wire on the back of the alternator ? The other wire in the connector is a control feed from the PCM - engine computer , It is marked L ,if you hook a test light to positive battery terminal an touch the other point end to the L terminal an it starts to charge your alternator is not being turned on by the PCM ! Could have open circuit or bad PCM !

Anti-Lock Braking System (ABS) Purpose Anti-lock brake systems (ABS) - generally also referred to as anti-lock systems (ALS) - are designed to prevent the vehicle wheels from locking as a result of the service brake being applied with too much force, especially on slippery road surfaces. The idea is to maintain cornering forces on braked wheels to ensure that the vehicle or vehicle combination retains its driving stability and manoeuvrability as far as physically possible. The available power transmission or grip between tyres and carriageway should also be utilised as far as possible to minimise the braking distance and maximise vehicle deceleration. Why ABS? Although today commercial vehicle brakes are designed to a very high technical standard, braking on slippery roads often results in potentially dangerous situations. During full or even partial braking on a slippery road it may no longer be possible to fully transfer the braking force onto the road due to the low coefficient of friction (friction coefficient (k)) between the tyres and the carriageway. The braking force is excessive and the wheels lock up. Locked wheels no longer provide any grip on the road and are almost incapable of transferring any cornering forces (steering and tracking forces). This often has dangerous consequences: - The vehicle becomes unsteerable - The vehicle breaks away in spite of countersteering, and starts to swerve. - The braking distance is significantly increased - Tractor-trailer combinations or semitrailer trains may break away or jackknife. Load sensing valve influence On dry roads today's load sensing valves (ALB) alone are often capable of preventing the wheels from locking if the vehicle is unladen; they also help the driver to effectively grade the braking process on wet road surfaces, but they are unable to prevent locking as such (no slip monitoring). In addition, they are unable to counteract any overreactions on the part of the driver, or any variances in frictional or adhesion coefficients which may apply to different sides of the vehicle, or indeed to its different axles (?-split road surfaces). Benefits of ABS: Only the Anti-Lock Brake System (ABS) - guarantees stable braking characteristics on all road surfaces. - maintains steerability and generally reduces the braking distance - prevents vehicle combinations from jackknifing - reduces tyre wear. Limits of ABS Although ABS is an effective safety device, it can not suspend the limits defined by driving physics. Even a vehicle fitted with ABS will become uncontrollable if driven too fast around a corner. So ABS is not a licence for a maladjusted style of driving or failure to observe the correct safety distance. 4 ABS Training Anti-Slip Regulation (ASR) Anti-Slip Regulation (ASR) Why ASR? Increasing the engine output (accelerating) on a slippery road surface can easily lead to the maximum adhesion on one or all powered wheels being exceeded causing them to spin, especially if the vehicle is unladen or partially laden. Spinning wheels when driving off or accelerating represent a safety risk just like locked wheel do when braking. Reasons - Wheels that spin transfer just as little cornering force as locked wheels. - They also no longer transfer any tractive power onto the road. Consequences - Vehicles that do not move or get stuck. - Vehicles that can no longer be steered, jackknife on uphill uphill gradients, or swerve in corners. Benefits of ASR ASR prevents the powered wheel from spinning and provides the following benefits: - Tractive power and cornering forces are maintained. - Stable driving behaviour is ensured when moving off, accelerating and negotiating corners on slippery roads. - The indicator lamp (if installed) is used to warn the driver of slippery road conditions. - Tyre wear is reduced to a minimum, and the motor vehicle's drive train protected - The risk of accidents is further reduced. ASR and ABS: ASR represents a worthwhile addition to an ABS-controlled braking system. All that is required to turn ABS control into full ABS/ASR control is an ECU with the additional ASR function and a few additional components for controlling the differential brake and the engine. This why ASR is only available in combination with ABS. Even a differential lock for off-road use and ASR do not exclude but complement each other. Limits of ASR The traction capacity of an all-wheel driven commercial vehicle can not be achieved by a motor vehicle with only one driving axle - not even with optimal ASR.

If the hazard flasher is working but the turn signals aren't, the problem is most likely either fuse A11 or the #2 relay in the trunk fuse block. However, if these check out, the problem could be either the turn/hazard switch assembly or the turn flasher module. If both the turn signals and hazard flasher are not working, the most likely problem is the turn/hazard switch assembly.

Unhook battery, let sit for 5 mins and hook back up.

check the starter and make sure have a good and clean contact a eassy way too check hold the key all way dow on start position for few seconds if any cable of the battery is hot the cause is a bad contac clean up and tide dow and check your battery to

If they are both devilles and both have 4.9 engines the transmissions (4T60E) will interchange

If the in-car hood release is not working, the hood latch may be jammed. You can try having someone pull on the release while you are bouncing the hood to try and release it. Depending on the grille you have, another way is to reach through the grill with a large screwdriver and pry the release arm to the right (where the cable attaches to the release mechanism). Failing all of that, the only other way I know of is to manually release the catch from beneath the vehicle, which will involve removing the lower air shield, reaching up from below and repeating the above procedure.

Check the engine computer again for trouble codes, you may find the idle speed solenoid has failed, there is a vac leak, or the throttle plate is sticking open. You should be able to check a 94 model yourself using the ac control panel on the dash. The procedure and code list is available online.

Check the trouble codes (DTCs) - this can be caused by numerous different problems.