Service Engine Soon

Hi,
The "Service Engine Soon" light came on a week ago and remains on. It has come on before without any problems evident and would go off in a day or two. But I know something is wrong now because the engine has been hesitating. I recently put some junk in it I bought in Pathmark. (Nothing against Pathmark. It is otherwise a great store :smile: ) It was a fuel additive to prevent fuel freeze up or something like that. Is was then that I started noticing the engine hesitation. I don't drive much so I am hoping when this tank of gas is used up the problem will go away but just in case it isn't as simple as that, I thought maybe someone knows what it is. I own a Saturn SL 1998 with fuel injection. Any suggestions as to what it could be?
Thanks,
Angie

what kind of fuel additive? with fuel injectors, additives tend to clog the injectors, but usually not with just one bottle.

I have a saturn sl 1996 w/ 1.9L DOHC motor. I had the check engine soon light for a very long time and it used to go off and on once in a while. The only way it went off it permanently so far after 15k or so. It was by going into oil change place and doing a pressurized flushing of the engine. I hope this helps

Thanks all for your responce. I can't remember now what it was exactly. We were looking for fuel injector fluid and couldn't find it for a while so we picked up this stuff which I think was a fuel injector cleaner or gas line cleaner form Pathmark. We don't drive much so the stuff is still in the tank. It's been about two months. I am really hoping that this is what it is cause the alternative is a trip to the shop. Yikes. It is still hesitating and weak at high speeds. I read somewhere that that could be a dirty fuel injector and all it needs is a cleaning. Hope so. That would be so cool if all it needs is the pressurized flushing. I'll tell my husband about that pressurized flushing thing.
Thanks again for your help.
Angie

probably is, but tha cleaner shud take care of it.

Replace PCV valve . If idle goes high or engine light comes on under high vacuum conditions (foot off gas at 70mph) it may fix it. I fought this for a long time. part was 1.98 from napa

I had the same problem with fuel additive in my 1998 Saturn SL. I used about 4 or 5 bottles, and my car started killing on me when going about 70 mph. It would first run at high RPM's, then I tried to do the trick about letting off the gas quickly. It would sometimes work, sometimes not work. Then after about 6 months, the trick quit working all together. I took it in to the dealership, and they told me the fuel additive was screwing up the fuel injection. They cleaned everything out, but now I have to use plus gas instead of regular. If I do use regular, it still runs, just not as well.

-- JoeyD

go somewhere and get the code read