A Check Engine Light can come on because some models may misinterpret the ratio of air and fuel being burned for combustion. The powertrain control module (PCM) will need to be replaced to fix the problem.
Problems for specific Honda Accord years:
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Newest reported 1999 Honda Accord problems
Some models can have a problem with moisture entering the fuel pressure regulator and affecting the amount of fuel being burned in combustion. This would set a Check Engine Light.
A faulty brake master cylinder reservoir filter can cause the brake system indicator to illuminate after a cold start and then go off. Replacement of the reservoir filter will commonly fix this problem.
Excessive oil consumption can cause a low oil level condition, which can result in illumination of the Check Engine Light.
The front brake rotors can warp and cause a vibration when braking. The rotors will need to be machined or in cases where they are worn to thin, replaced to correct this issue.
Some models with the manual transmission can grind while shifting up into fifth gear due to the misalignment of the fifth gear shift fork. The transmission will need to be removed, and fifth gear, the synchronizer sleeve set, and the fifth gear shift fork will need to be replaced.
A rough idle and harsh transmission shift can be caused by a broken front engine mount. Replacing the broken mount will address these issues.
Automatic transmission failures are common, Automatic transmission failure on these vehicles will generally require overhaul or replacement of the transmission. In the event of a failure, it may be worthwhile to check with Honda to see if they may offer assistance for this repair. As these vehicles age, Honda has become less likely to help out with these transmission related repairs.
One or both of the rear sway bar end links may break resulting in a knocking noise from the rear of the vehicle.
The engine may develop and oil leak due to a porous engine block casting. The repair procedure is dependent on where the leak is located. Honda has released a service bulletin covering model years 1998-2003. Honda may offer assistance with repairs, determined on a case by case basis.
Plugged moon roof drains can cause a water leak inside the car. The water will usually leak onto the driver's or passenger's head when the car turns a corner.
The clock light has a tendency to burn out.