Skip the auto shop - Our mechanics make house calls

Q: Does a 1994 Cadillac Deville have a crankshaft sensor or do I need to replace the whole distributor?

asked by on

my 94 Cadillac deville rpm go up and down while at stop..it sounds like it wants to shut off..is that a ignition distributor problem? and also when driving in stop and go traffic my low oil pressure light comes on but car does not act any diffrent..no noise or lost of power ..is that a sensor or should i replace oil pump

My car has 100500 miles.
My car has an automatic transmission.

Hi there. The ignition system for the 4.9L in your vehicle, should be HEI (high energy ignition) and does not have a CKP (crankshaft position sensor). The pick-up coil is inside the distributor and most likely is not the cause for the erratic idle. It could be, an intake manifold vacuum leak, a faulty TPS (throttle position sensor) incorrectly calculating throttle position, or a faulty ISC (idle speed control) stepper motor which contains an idle tracking switch. The low oil pressure light may be related to the low engine rpm and correcting the erratic idle speed may correct the oil light. There is a possibility and should be properly diagnosed, that the oil pressure sensor is at fault. I recommend having your vehicle’s erratic idle be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Does a 1994 Cadillac Deville have a crankshaft sensor or do I need to replace the whole distributor?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Power steering quit working - 1991 Cadillac Fleetwood

Hi! I'd take a look to be sure the power steering belt is still there. With the engine running, you should be able to see the p/s pump pulley turning. The reservoir should be filled to the full mark. Listen...

Q: I have a 00 deville I just changed the water pump housing and water pump the thermostat and radiator the upper and lower radiator 2000 Cadillac De Ville

Hi there - I suspect your radiator is clogged or otherwise corroded so that it is not shedding heat as efficiently as it should. Idling with the heater on was getting rid of heat without loading the radiator. When you're...

Q: My car dies or has no power when I put into gear

Hi There, It sounds like you may have a faulty throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.