1996 Chevy Tahoe RPM runs high

1996 CHEVROLET TAHOE
100,000 MILES • V8 • 4WD • AUTOMATIC
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HSYODER
  • MEMBER
  • 1 POST
My Tahoe's "service engine soon" light just came on and the RPM's run really high even though I am only driving 20-30 MPH. I cannot go over 30 MPH - the RPM's are going real high and then dropping low. The engine seems to not be getting enough of something. It sounds like the engine is running real hard. I didn't even make it home - I left it in a parking lot. What is going on? Thanks for helping.
Feb 25, 2010 at 11:30 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Your starting point here is get the computer scanned for code/s to find out what's causing it to come On and get back with the code/s

Or you can try cleaning out the IACV and test the TPS/MAP sensor and see what happens-
Feb 25, 2010 at 11:39 AM
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