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Old 06-30-2006, 04:12 PM
maxwedge maxwedge is offline
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Smile Re: 98SE fluctuating rpms

Quote:
Originally Posted by Ajno
So no chance of it being the egr valve? Sorry I wish I had more info to give. When I take long trips the jerking is more frequent.
Egr operation at that speed and throttle opening should have no effect on performance, Rich and I are both wondering how the rpm changes on the tach do not translate to a speed or trans change. See if it does it up a slight grade just before downshift would normally occur, might also scan it for pending codes.
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