1998 Chevy Blazer

162,000 MILES • 6 CYL • 4WD • AUTOMATIC
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TRANSAM86
  • MEMBER
  • 2 POSTS
ok this is about as close to the problem as i can get

1st -3rd fine. works like a champ. Rev fine. also works great. 3rd - 4th (OD) intermittent. when driving it will sit at 2500rpms at 60mph, you go to accelerate and it will drop down to where it should be if it were in over drive(about 1600rpms), but once you stop accelerating and maintain speed it will go back to the 2500rpms. Does the same thing with cruise control on as well. Its not the TPS that was just changed 3 days ago. It doesn't shift hard, and seems to run fine at the 2500rpms, just its not gas efficient. Please help if possible
Jul 4, 2010 at 6:27 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
have a trans pro run a scan on it, it may be an engine problem or trans but a scan may tell....
Jul 8, 2010 at 11:23 AM
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TRANSAM86
  • MEMBER
  • 2 POSTS
OK, thank you for your advice i will get it scanned asap
Jul 15, 2010 at 7:04 AM
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