355 Engine Light Again

Do you have a K&N filter in the car. Almost sounds like a mass airflow sensor problem to me. The wire is coated with oil and is having a hard time getting proper air readings causing the ECU to constantly search for proper idle speed. Not sure if this is an issue on the F355 but I know it is a constant battle with the BMWs.

 

I would suspect the alternator. My 512TR runs rough when the battery is low

 

My check engine light came on last night.

Starts and runs fine. Drove home 20 minutes no light then stopped at the store for ten minutes. when I restarted the light was on. Stays on now when i start the car, but it runs fine.

What are potential causes for the light to come on? Are the catastrophic or simple symptoms?


Stan

 

Occasional problem in my 512TR. Turning off battery, waiting 1 min and turning it back on always fixes it for a few weeks. Sensitive emission components and has no effect on drivability.

 

plug in a OBD2 analyzer and find the codes it is throwing. Post the codes on this board. Members will help you with the factory code identification. Be aware that engine misfiring can lead to significant repair bills

 

Where do i get an OBD2 analyzer? and where do i plug it in?

Stan

 

You can get an OBDII plug and lead off E-bay, not so sure about the software, I've been playing about with Rosstechs VAG-COM with a degree of success with a friends 355 (Euro spec)

All up think the OBD plug and software was about $120 (still hugely cheaper than the Ferrari OBD kit at $32000!)

 

The government demanded that all cars coming from Europe, etc. have a common computer hookup under the steering wheel. Based on the year of the car's manufacture is has to be either obd1 or obd2 compliant. You can get the analyzer for $120 or so from www.partsamerica.com It will come with a manual telling you what some of the codes are. Other codes are supposed to be "secret factory" codes. but there are guys on the board who can tell you what a specific code is for. There has been some debate on the board about whether the engine should be running. My analyzer was very specific and said the ignition had to be on but not the engine. Just follow the directions and try not to fry an ECU as they are very salty. Good luck

 

My check engine light came on today for the second time. First time I started up the car before the check ok light came on and idle was very rough. Turned off the car, waited for check ok, started up fine but check engine light stayed on for what seemed about 4 or 5 startups and after that it was fine. This time I waited for check ok and instrument panel lights were doing weird things and making weird noises. I cycled the alarm/locks and it started fine but check engine light stayed on. Again, after 5 startups everything is fine and check engine light is off.
Bill

 

go to autozone they have an obd 2 analyzer service, its free.