Check Engine Light Diagnosis - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Check Engine Light Diagnosis
Posted by Bryce [Email] (more from Bryce) on Thu, 25 Jan 2001 18:08:30
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My mechanic is having trouble tracking down the reason why the Check Engine Light is illuminated in my 94 900S (122,000 miles). It's an intermittant problem--it will be on for days and then go off for a few days. He replaced the vac lines, which kept it off for a week or so. I'd love to hear of similar problems that were solved.
Symptoms are:
1--obviously, the light is on
2--idle is rougher than normal. this is especially noticable when stopped in drive
3--gas mileage is poor
4--performance is poor
When the light goes off, these problems go away, so I do think that it's an actual problem, rather than a crossed wire.
There are also a couple of other possible indicators that are also possible coincidences
1--three times it has gone off after an extended highway drive, but it returns after some city driving
2--on two occassions after 20 minute highway drives the oil light has come on while driving (2000 rpm), along with the exclamation point. After turning the car off and restarting, the light stays off for a few minutes then returns. After cooling off completely, the problem is gone.
Posts in this Thread:
- Check Engine Light Diagnosis, Bryce, Thu, 25 Jan 2001 18:08:30 <-- Viewing This Message
- Re: Check Engine Light Diagnosis, NIck , Mon, 29 Jan 2001 10:38:24
- Re: Check Engine Light Diagnosis, NIck , Mon, 29 Jan 2001 10:38:20
- Re: Check Engine Light Diagnosis, John, Fri, 26 Jan 2001 11:27:38
- Re: Check Engine Light Diagnosis, Dean, Fri, 26 Jan 2001 09:48:48
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