1989 CADILLAC DEVILLE CP SPEED ACTUATOR - HIGH IDLE / RUNAWAY VEHICLE - HAVE REPLACED 3 TIMES PROBLEMS STILL HAPPENING. NOW I WILL NOT DRIVE THIS CAR FOR FEAR OF A ACCIDENT! I WENT ONLINE TO SEE IF ANY OTHER CONSUMERS HAD SAME PROBLEMS AND IT IS CONFIRMED! "INCIDENTS NUMEROUS TIMES". *TR
1989 Cadillac Deville
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1989 Cadillac Deville do not stand out strongly from the model-year median of 44.
About this comparison →How this year compares
Owner complaints by model year
Compare all Deville years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 2 of 48 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Vehicle Speed Control. Review the 19 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
19 reportsWHILE DRIVING VEHICLE ACCELERATED, AND WENT OUT OF CONTROL. CONSUMER STATED THERE WAS SOMETHING CALLED AN ACCELERATOR MOTOR THAT MALFUNCTIONED. THE TECHNICIAN REPLACE THE IDLE SPEED SENSOR.*AK FRONT CALIPERS AND ROTORS BURNED UP. THE TECHNICIAN REPLACED THE CALIPERS, ROTORS AND FLUSHED THE BRAKE FLUID. *BF *NM
AFTER ACCELERATING THROTTLE KEEPS PUMPING, DEALER HAS BEEN CONTACTED, AND CAN NOT CORRECT PROBLEM. *AK ALTERNATOR FAILED, FRONT BRAKES MAKE NOISES, ALSO THE FUEL FILTER WAS REPLACED.*YH *YH
RUNAWAY THROTTLE, SUDDEN HIGH SPEED ENGINE CONDITIONS THAT OCCURRED ENTIRELY INDEPENDENT OF THE DRIVER. STOPPING REQUIRED STEERING TO THE SIDE OF THE ROAD AND TURNING OFF THE IGNITION. LAST TIME IT HAPPENED IT PERSISTED EACH TIME ENGINE WAS RESTARTED.
WHILE IN CRUISE CONTROL MODE, PUT FOOT ON BRAKE TO RELEASE CRUISE CONTROL, CAR IMMEDIATELY EXCELLED TO 85MPH. REACHED OVER TO TURN OFF SWITCH ON CRUISE CONTROL, AT THE SAME TIME BOTH FEET ON BRAKES, TRYING TO SLOW DOWN, FINALLY PUT CAR IN NEUTRAL, CAR SLOWED DOWN.
NO SUMMARY LISTED FOR ABOV EVEHICLE. *AK
CONSUMER WAS DRIVING 55MPH ACCELERATED TO CHANGE LANES IN THE MIDDLE OF RUSH HOUR TRAFFIC. CONSUMER THOUGHT ACCELERATOR GOT STUCK AND HIT THE BRAKE. THEN CONSUMER TRIED TO LIFT THE GAS PEDAL WITH HER FOOT, THINKING IT WAS STUCK AND CAR KEPT ACCELERATING. CAR WAS ALSO PLACED IN NEUTRAL, BUT CONTINUED TO ACCELERATE UP TO 90MPH…
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CONSUMER WAS DRIVING 55MPH ACCELERATED TO CHANGE LANES IN THE MIDDLE OF RUSH HOUR TRAFFIC. CONSUMER THOUGHT ACCELERATOR GOT STUCK AND HIT THE BRAKE. THEN CONSUMER TRIED TO LIFT THE GAS PEDAL WITH HER FOOT, THINKING IT WAS STUCK AND CAR KEPT ACCELERATING. CAR WAS ALSO PLACED IN NEUTRAL, BUT CONTINUED TO ACCELERATE UP TO 90MPH. CONSUMER TURNED IGNITION OFF, AND PUT EMERGENCY BRAKE WHILE IN THE MIDDLE OF A TURN. THE PLASTIC LOCK IN RETAINER CLIP FELL OFF INTO THE THROTTLE BODY & JAMMED THE THROTTLE OPEN. *AK
THE DATES ARE APPROXIMATE. I BOUGHT MAY 29,1996 AND WAS IN THE SHOP WITHIN TWO WEEKS. THE SERVICE ADVISOR (DICK SMITH I THINK HIS NAME IS) ASSURED ME THAT SCHEDULED MAINTENANCE WOULD ADDRESS THE ENGINE SURGE PROBLEM AND AS I THINK ABOUT IT I AGREED TO IT BECAUSE THAT WAS AT LEAST THE SECOND TIME I WAS IN LINDSAY CADILLAC FOR SE…
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THE DATES ARE APPROXIMATE. I BOUGHT MAY 29,1996 AND WAS IN THE SHOP WITHIN TWO WEEKS. THE SERVICE ADVISOR (DICK SMITH I THINK HIS NAME IS) ASSURED ME THAT SCHEDULED MAINTENANCE WOULD ADDRESS THE ENGINE SURGE PROBLEM AND AS I THINK ABOUT IT I AGREED TO IT BECAUSE THAT WAS AT LEAST THE SECOND TIME I WAS IN LINDSAY CADILLAC FOR SERVICE ON THE ENGINE SURGE. I RETURNED A FEW DAYS LATER AS MY SCHEDULED ALLOWED AND RECALL TALKING WITH THE SERVICE MANAGER WHO REFUSED TO ADMIT THAT THE FIRST 3 TIMES I WAS THERE, THOSE CADILLAC "EXPERTS" SHOULD HAVE FIXED IT PROPERLY THE FIRST TIME AND AT THE MOST BEFORE THE 3RD VISIT. OF COURSE "DICK" ASSURED HIS BOSS THAT HE SAID NOTHING OF THE SORT (THAT $495 SHCEDULED MAINTENANCE WOULD ONCE AND FOR ALL SOLVE THE ENGINE SURGE). I CAME SO CLOSE TO REARENDING MAYBE FIVE DIFFERENT PEOPLE DURING THAT WHOLE RUNAROUND PERIOD. FINALLY, WITH MY LIMITED KNOWLEDGE OF VEHICLES, I REDUCED THE IDLE CONTROL SO THE HIGH REVING ENGINE WOULDN'T DO DAMAGE UNTIL I FOUND A SOLUTION TO THIS. AND NOW I COME ACROSS YOUR WEBSITE AND SEE SOME OF THE SAME COMPLAINTS I MADE TO LINDSAY CADILLAC OF ALEXANDRIA, VIRGINIA IN A LIST OF RECALLS AND TSB'S THAT WERE ISSUED 2 YEARS AFTER THEY (LINDSAY) SOLD THIS CAR TO THE PREVIOUS OWNER NAMED TIPTON ACCORDING TO DICK SMITH IN SUMMER OF 1989. OF THE 253 COMPLAINTS ON THE 1989 CADILLAC DEVILLE THAT I FIND IN YOUR COMPLAINTS DATABASE, 29 OF THEM CITE A PROBLEM WITH THE THROTTLE. THAT IS A CONSIDERABLE PERCENTAGE CONSIDERING THAT SILENT SUFFERS (THOSE WHO WON'T MAKE OFFICIAL COMPLAINTS BUT WILL BUY IMPORTS INSTEAD) COULD COUNT FOR A ESTIMATED ADDITIONAL 30%. IT IS NO WONDER THAT IMPORT AUTOMAKERS ADVERTISE LESS THAN "DAMS" (DOMESTIC AUTO MAKER S) DAMS ARE THE SINGLE BEST REASON FOR BUYING UNAMERICAN. NOW, WITH THE SIGNIFICANT % OF REPORTED COMPLAINTS ON THE THROTTLE OF THE 1989 CADILLAC DEVILLE, SHOULDN'T A RECALL BE IN ORDER? REMEMBER THAT A RECALL ON THE 1992 CADILLAC FLEETWOOD INVOLVED THE THROTTLE.
ENGINE RACED OUT OF CONTROL ON STARTUP. DESPITE MY HEARING PROBLEM, I TURNED OFF THE IGNITION BEFORE LEAVING "PARK". IF I HAD PUT THE CAR IN "DRIVE" I WOULD HAVE SMAHED INTO THE PARKED CAR IN FRONT OF ME. THE SERVICE STATION SAID THAT THE IDLE SPEED CONTROL UNIT HAD FAILED. IT WAS JAMMED IN THE FULL THROTTLE POSITION AND COUL…
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ENGINE RACED OUT OF CONTROL ON STARTUP. DESPITE MY HEARING PROBLEM, I TURNED OFF THE IGNITION BEFORE LEAVING "PARK". IF I HAD PUT THE CAR IN "DRIVE" I WOULD HAVE SMAHED INTO THE PARKED CAR IN FRONT OF ME. THE SERVICE STATION SAID THAT THE IDLE SPEED CONTROL UNIT HAD FAILED. IT WAS JAMMED IN THE FULL THROTTLE POSITION AND COULDN'T BE REPAIRED. *AK
WHEN TURNING THE IGNITION ,THE ENGINE GOES TO FULL POWER. CONSUMER MUST PRESS HARD ON BRAKES IN ORDER TO KEEP THE VEHICLE FROM ACCELERATING WITHOUT TOUCHING THE ACCELERATOR. *AK *ML
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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