Three problems related to check engine light on have been reported for the 2004 Suzuki Forenza. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Suzuki Forenza based on all problems reported for the 2004 Forenza.
I bought my car used and it has a new tranny, cv axles and everything the only thing original is the engine. So I have already had to replace the O2 sensors twice at $60 each. I have had to replace the tps sensor, thermostat and housing, ignition coil, battery, starter, fuel pump and alternator. All because I kept getting the check engine lights on and throwing coding all over the place. And the car still stalls when I stop at a stop light and runs and idles rough. I have spent over $1500 fix this problem and it still exists I did all the work myself I have worked on cars my whole life and am a mechinic. Every mechanic I take it to can bot find the problem and Suzuki can't give an answer to the problem and I don't know what to do.
: the contact stated on 5 occasions the check engine light illuminated. This happens at various speeds and under any driving conditions. When the check engine light illuminates it does not affect the performance of the engine. The vehicle was taken to the dealer for inspection the check engine light code was reset after each incident. On 3 occasions the check engine light re illuminated after 45 minutes, the 4th time after a few weeks and the last time after several months. The manufacturer has been alerted.
While driving engine warning light illuminated. Dealership was notified, but did not resolve the problem.