2003 SAAB 9-5 check engine light

RMDEWSNAP

MEMBER
2003 SAAB 9-5
4 CYL
FWD
AUTOMATIC
70,000 MILES

I just, about 1000 miles ago, had to have my turbo replaced and since my check engine light goes on and off intermittently. More on than off. I replaced the plugs and air filter. After that it was off for a while but has come back on.

Any ideas or suggestions where to go from here? O2 sensor. In my readings I noticed there may be a front and rear sensor also. Is that the case.

Also the ligh comes on at when I start the car. Never when driving and it doesn't go off until I start the car again.

I have checked to make sure the gas cap is on tightly.

I appreciate the help!

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Hi rmdewsnap, Welcome to 2carpros and TY for the doantion

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.

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Monday, May 17th, 2010 AT 2:39 AM

RMDEWSNAP

MEMBER
2 POSTS

The codes are 1334 and 1312. Any idea what I need to do about that?

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Saturday, May 22nd, 2010 AT 7:54 AM

RASMATAZ

MECHANIC
75,992 POSTS

These are misfires code, could be the wrong type spark plugs or the direct ignition coil

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Saturday, May 22nd, 2010 AT 11:39 AM

RMDEWSNAP

MEMBER
2 POSTS

Found some discussions on some other sites and they stated could be caused by poor fuel deliver or low octane fuel. I changed the fuel filter, put in some very good injector cleaner and some octane booster and it's running like a champ. I think the real culprit was the fuel filter. From the look of it, it was never replaced in 70k miles. I bout the car used a year or so ago.

Thanks.

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Sunday, May 23rd, 2010 AT 8:57 AM