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Saab 93 tid would faulty egr valve cause it to go into limp mode and activate engine managment light

High pitched whine coming from egr for 30 seconds after ignition is turned off

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  • Cars & Trucks Master
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DON'T GUESS.

When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Posted on Oct 25, 2012

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SOURCE: Have 93 Chevy G 30 HAve a High pitch whine that

This could be anything from the pump in the transmission to the alternator bearings/bushings to the power steering pump. Could be an idler pulley bearing, but I doubt it.
Hint: If the noise is very high-pitched, check the alternator. If it is a lower, medium-high-pitch sound that changes some when you turn the wheels, check the power steering pump. If it is almost like a moan or a "Whooo" sound, that's the transmission pump.

Posted on Feb 23, 2010

468 Chevelle
  • 81 Answers

SOURCE: Service engine code indicates EGR valve.

You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

Posted on Mar 28, 2009

  • 1114 Answers

SOURCE: Would faulty EGR valve cause check engine light to come on?

If EGR was out your engine light would stay on!usually hi way drive is a whole new emission game sensor work 100% different that city drive you have a O2 sensor problem don"t Get$$ the problem when if you say it only will do it on highway then take it on highway with OBD 2 in run scan mode have a passenger observe it this will give the the proper code you will need to peg it cheers!

Posted on Dec 27, 2008

  • 1 Answer

SOURCE: I have a Saab 9-3 2.2 tid which I bought a week

I am not a mechanic but i have got the same model saab which i have had for 5 years. Same issue a couple of years ago, for me it turned out to be a hole in the hose to the intercooler. Loss of power and smoking. Once repaired all ok though

Posted on Nov 16, 2009

SOURCE: High pitch winding noise on cold start up.

Sounds like a constricted IAC Idle air control valve passsage. Fairly simple to fix. Remove air filter trunking all the way to the throttle body to allow access. The IAC allows air passed the throttle when closed at idle. Just on the inside of the throttle body in front of the throttle flap there is an opening in the throttle wall. This is the air inlet to the IAC; there is an outlet similar on the other side of the throttle. Use carb cleaner and cloth to shift the grime from this tubing and get it like new. Hold the throttle flap open to get at both ends of the IAC tubing. The IAC can be detached and cleaned to a shine. Reinstall the IAC and replace all air pipe ducting. Leave for about 20 minutes to allow any cleaner residue to dry out. When you restart you might experience a bit of uneven running but this will disappear very quickly as the last of the cleaner dries out

Posted on May 04, 2010

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