How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask 350matt Your Own Question
350matt
350matt, Engineer - BEng Hons
Category: Saab
Satisfied Customers: 20605
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
12772297
Type Your Saab Question Here...
350matt is online now
A new question is answered every 9 seconds

Saab 9-3 2.0T: I have a 2003 Saab 9-3 turbo. It will start

Customer Question

I have a 2003 Saab 9-3 turbo. It will start and then will run till it gets warmed up then the traction control light comes and the car starts losing power and idles rough and dies. It will restart but the whole scenario starts again.
Submitted: 1 year ago.
Category: Saab
Expert:  350matt replied 1 year ago.
Hello I suspect that the traction control is kicking in prematurely due to an internal fault - most likely a wiring or failing sensor as things can expand when hot and so break connections The quickest route to repair is to have the car plugged into a diagnostic machine which will read off the fault code stored in the ECU (providing the light is still on at this point) and indicate which sensor has failed or whether the fault is more serious. However with ABS/ traction systems 99% of the time its a problem with one of the wheel speed sensors and I'd first check the connections at all four corners first for any signs of corrosion or chafed wiring.The sensor is located in the wheel hub so you'll have to remove each wheel in turn to inspect them all.Also check that the toothed wheel that the sensor points to is clean and free of any debris.you can check each sensor's function by plugging the two output wires into an AC voltmeter and spinning the wheel quite quickly, you should get a voltage signal that increases with rev's. Its possible that the fault is only a bad connection to one of the wheel sensors.This may be remedied by removing each wheel in turn and unplugging each sensor and cleaning the contacts with a squirt of electrical contact cleaner. Then refitting.
Expert:  350matt replied 1 year ago.
Hi
do you still need help?

Related Saab Questions