1989 Isuzu I Mark Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1989 Isuzu I Mark, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical436.4%
- Driver assistance218.2%
- Engine218.2%
- Brakes19.1%
- Powertrain (other)19.1%
- Seat belts19.1%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
THE ECU HAS CAUSED ERRATIC ENGINE BEHAVIOUR AND COMPLETE ENGINE FAILURE LEAVING US STRANDED ON NUMEROUS OCCASIONS. MECHANICS HAVE BEEN UNABLE TO RESOLVE THE ISSUE AND THE VEHICLE HAS BEEN UNTRUSTWORTHY OVER IT'S ENTIRE LIFE. MANY TIMES THE IGNITION SYSTEM HAS FAILED IN TRAFFIC WITH OUR BABIES IN THE CAR LEAVING US STRANDED IN THE HEAT. THIS UNIT SHOULD BE RECALLED. IT WOULD BE NICE TO HAVE SOME OF THE HUNDREDS SPENT ON MIS-DIAGNOSIS, MOTEL BILL'S AND TOWING SERVICE, ETC. REIMBURSED BY GM/DELCO -ISUZU. PLEASE CONTACT ME IF NECESSARY. DT
THE COMPUTER IN THIS CAR CAUSES FOR AN EXTREMELY ERRATIC IDLE. WHEN THE VEHICLE IS FIRST TURNED ON, THE IDLE SPEED IS NORMAL AND STEADY FOR ABOUT 5 TO 10 SECONDS, AND THEN ALL BETS ARE OFF. SOMETIMES IT GOES UP, SOMETIMES IT GOES DOWN, RANGING ANYWHERE FROM NEAR-STALL TO 3000 RPM. IT DOES THIS EVERY TIME THE CAR IS TURNED ON WHEN COLD, ONLY OCCASIONALLY AFTER IT IS WARMED UP. I WOULD TRY REPAIRING IT, BUT I HAVE A GREAT DEAL OF EXPERIENCE WITH THIS ENGINE/ECU COMBINATION, AND ALMOST ALL OF THEM (INCLUDING DEALER-SUPPLIED REPLACEMENT ECUS, WHICH ARE FRIGHTFULLY EXPENSIVE) DO THIS. THANKFULLY, I AM AWARE OF THIS PROBLEM, SO WHEN I AM IN CLOSE QUARTERS WITH A COLD ENGINE, I KEEP MY FOOT ON THE CLUTCH, READY TO SPRING INTO ACTION. THE CAR, DESPITE IT'S MILEAGE, HAS BEEN VERY WELL-TAKEN CARE OF, AND HAS A GREAT DEAL OF POWER. ONE TIME WHEN THE POWER HIT (IN FIRST GEAR, COASTING WITH MY FOOT OFF THE GAS), IT ACTUALLY SPUN THE TIRES. SPINNING THE TIRES WITH YOUR FOOT OFF THE GAS IS NOT WHAT I WOULD CALL A SAFE CONDITION, ESPECIALLY GIVEN THAT MOST OF THEM DO IT. WEREN'T ALL THE AUDIS RECALLED FOR SOMETHING LIKE THIS BACK IN THE 80'S? PLEASE CONTACT ME IF YOU WOULD LIKE ANY MORE INFORMATION.*AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
ERRATIC IDLE, IDLE REVVING AND DROPPING, IDLE DIPPING OFTEN WITH ENGINE DYING, IDLE HANGING HIGH ABOVE 2,000 RPM, AND ENGINE DYING OR STALLING FOR NO REASON WITH NO TROUBLE CODES
ENGINE REVS UP TO 2500 RPMS WHILE IN NEUTRAL, THEN WHEN IT'S PUT INTO GEAR IT WILL STALL OUT. MECHANIC SAYS ITS THE ECU. PROBLEM IS HARD TO DUPLICATE. *AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
ERRATIC IDLE, IDLE REVVING AND DROPPING, IDLE DIPPING OFTEN WITH ENGINE DYING, IDLE HANGING HIGH ABOVE 2,000 RPM, AND ENGINE DYING OR STALLING FOR NO REASON WITH NO TROUBLE CODES
ECU HAS FAILED, CAUSING ERRACTIC IDLE/ VEHICLES STALLING. PLEASE PROVIDE FURTHER INFORMATION. *AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
THE FRONT BRAKE PADS WHEN CHANGED LATER THEY COME OFF IN A YEAR DIFFERENT . TT
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
REAR SEAT BELTS HAVE FAILED, SEAT BELTS WILL NOT RETRACT FROM ITS POSITION, BOTH SEAT BELT NEEDS REPLACEMENT. TT
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .